什么是气候辐射强迫？
What is radiative forcing?
辐射强迫指由于某些因素（如温室气体增加、太阳辐射变化）导致地球能量收支在大气层顶的净变化，单位为瓦每平方米。正向强迫使地球吸收更多热量而变暖，负向强迫则起冷却作用。它是量化不同因素对气候影响程度的关键指标。
Radiative forcing is the net change in Earth's energy balance at the top of the atmosphere caused by factors such as increased greenhouse gases or solar variability, measured in watts per square meter. Positive forcing warms the planet by adding absorbed energy, while negative forcing cools it. It is a key metric for quantifying each factor's climate impact.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#辐射强迫 #能量平衡 #气候
什么是气候临界点？一旦越过就真的“回不来”了吗？
What is a climate tipping point, and is the change truly irreversible once one is crossed?
临界点指气候系统的某个组成部分越过阈值后，即使外部驱动力停止，系统也会自我强化地滑向新状态、几乎不可逆。科学家关注的高风险“临界元素”包括格陵兰与南极冰盖崩解、亚马逊雨林大面积衰退、大西洋经向翻转环流减弱等。研究表明升温超过1.5–2°C后触发多个临界点的概率明显上升，这正是各国努力把升温控制在这个区间内的原因。
A tipping point is a threshold beyond which a component of the climate system reorganises into a new state, often irreversibly, even if the original driver is removed. High-risk tipping elements studied by scientists include collapse of the Greenland and Antarctic ice sheets, large-scale dieback of the Amazon, and weakening of the Atlantic Meridional Overturning Circulation. Research shows the chance of triggering multiple tipping points rises markedly above 1.5–2°C of warming — exactly why countries aim to keep warming below that range.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#临界点 #不可逆 #冰盖
地球系统中的「临界点」是什么？请举出近期评估中引用的两个例子及其大致阈值。
What are tipping points in the Earth system, and name two examples with approximate thresholds cited by recent assessments?
临界点指局地变暖超过某阈值后，系统发生不可逆、自我强化的转变。例如格陵兰冰盖在升温约 1.5°C 以上可能不可逆退缩，大西洋经向翻转环流（AMOC）在更高升温下存在崩溃风险。
A tipping point is an irreversible, self-reinforcing shift once local warming exceeds a threshold. Examples include the Greenland ice sheet, which may retreat irreversibly above roughly 1.5°C, and the AMOC, which risks collapse at higher levels of warming.
难度 专业 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#临界点 #不可逆变化 #地球系统
地表反照率如何影响气候？
How does surface albedo affect climate?
反照率是地表反射太阳辐射的比例，冰雪反照率高、海洋和森林反照率低。当冰雪融化露出深色地表，会吸收更多热量并形成正反馈，加速变暖。反照率变化是极地放大效应的重要机制之一。
Albedo is the fraction of solar radiation a surface reflects; snow and ice have high albedo, while ocean and forest have low albedo. When ice melts to reveal darker surfaces, more heat is absorbed, creating a positive feedback that amplifies warming. Albedo change is a key mechanism behind polar amplification.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#反照率 #冰雪 #气候反馈
气候系统中的临界点是什么意思？
What does a tipping point mean in the climate system?
临界点指气候系统在某些阈值被越过后发生的不可逆或自我强化的剧烈变化。例如亚马孙雨林退化、格陵兰冰盖崩解或大西洋经向翻转环流减弱。越过临界点后，即使停止排放也难以挽回，因此被认为是最危险的气候风险。
A tipping point is an irreversible or self-reinforcing abrupt change that occurs once the climate system crosses certain thresholds. Examples include Amazon rainforest dieback, Greenland ice sheet collapse, or weakening of the Atlantic overturning circulation. Once crossed, recovery is difficult even if emissions stop, making tipping points among the most dangerous climate risks.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#临界点 #气候风险 #不可逆变化
什么是“平衡气候敏感度（ECS）”，目前科学界的最佳估计是多少？
What is equilibrium climate sensitivity (ECS), and what is the current best scientific estimate?
平衡气候敏感度指大气中二氧化碳浓度加倍、且气候系统达到新平衡后，全球平均地表温度的长期升幅。IPCC 第六次评估报告将ECS的可能范围定为2.5–4.0℃，最佳估计约为3℃，这一指标是评估长期变暖情景与政策目标的核心参数。
Equilibrium climate sensitivity (ECS) is the long-term global mean surface warming that results once the climate system has re-equilibrated after atmospheric CO2 is doubled. The IPCC Sixth Assessment Report gives a likely range of 2.5–4.0°C with a best estimate of about 3°C, making ECS a central parameter for evaluating long-term warming scenarios and policy targets.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#平衡气候敏感度 #二氧化碳加倍 #AR6 #最佳估计 #政策情景
为什么海洋热含量被认为是衡量全球变暖最稳健的指标？
Why is ocean heat content considered the most robust metric of global warming?
地球能量收支失衡产生的多余热量约有九成被海洋吸收，只有百分之几留在大气中，因此海洋热含量比地表气温更少受到年际噪声干扰。Argo 浮标阵列自 2000 年代起提供全球 2000 米以上的连续温盐剖面，使热含量曲线几乎逐年单调上升。相比之下，地表温度会因厄尔尼诺、火山与气溶胶变化出现明显起伏。
About 90% of the excess heat from Earth's energy imbalance is taken up by the ocean and only a few percent stays in the atmosphere, so ocean heat content carries far less interannual noise than surface air temperature. The Argo float array has delivered continuous global temperature and salinity profiles down to 2000 metres since the 2000s, producing a heat-content curve that rises almost monotonically. Surface temperature, by contrast, wobbles with El Niño, volcanic eruptions, and aerosol changes.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#海洋热含量 #Argo浮标 #能量失衡
什么是气候“临界点”？
What are climate tipping points?
临界点指地球系统某些部分一旦被推过阈值，就会自我强化、不可逆地转向新状态。常被列举的包括格陵兰冰盖崩解、亚马孙雨林干旱化、永久冻土融化和珊瑚礁大面积死亡。
A tipping point is a threshold beyond which part of the Earth system shifts irreversibly to a new state through self-reinforcing feedbacks. Often-cited examples are collapse of the Greenland ice sheet, dieback of the Amazon, permafrost thaw, and mass coral death.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#临界点 #不可逆 #正反馈
米兰科维奇循环如何驱动冰期与间冰期？
How do Milankovitch cycles drive ice ages and interglacials?
地球轨道的偏心率、地轴倾角和岁差以数万年的周期缓慢变化，改变各地接收的日照量。这些天文节律与冰盖反照率反馈相配合，塑造了过去数百万年的冰期—间冰期循环。
Slow changes in Earth's orbital eccentricity, axial tilt, and precession alter how much sunlight reaches different regions over tens of thousands of years. Combined with ice-albedo feedback, these astronomical rhythms shaped the ice-age cycles of the past millions of years.
难度 专业 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#米兰科维奇循环 #轨道 forcing #冰期
地球系统的哪些'临界点'可能在全球升温约1.5°C后被不可逆触发？
Which Earth-system tipping points could be irreversibly triggered near 1.5°C of warming?
研究指出格陵兰与西南极冰盖崩解、亚马逊雨林向稀树草原转变、北半球多年冻土大规模融化及大西洋经向翻转环流（AMOC）减弱等临界点存在级联风险。一旦越过，部分过程将在百年尺度上自我维持，即便升温回落也难以逆转。
Studies flag cascading risks such as collapse of the Greenland and West Antarctic ice sheets, Amazon dieback, widespread permafrost thaw, and weakening of the Atlantic Meridional Overturning Circulation (AMOC). Once crossed, some of these can become self-sustaining for centuries even if warming is later reversed.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
Nature 评论； Stockholm Resilience Centre
Nature;Stockholm Resilience Centre
#临界点 #级联效应
全球海平面上升由哪几部分构成？各自的比重近几十年发生了什么变化？
What components make up global sea level rise, and how have their shares shifted in recent decades?
海平面上升主要来自四部分：海水受热膨胀、山地冰川消融、格陵兰冰盖亏损与南极冰盖亏损，另有陆地水储量变化的小量贡献。二十世纪中期热膨胀曾是最大项，但卫星测高时代以来冰川与两大冰盖的合计贡献已超过热膨胀，成为主导。IPCC 评估 1901 至 2018 年全球平均海平面上升约 0.20 米，且上升速率在加速。
Sea level rise comes mainly from four terms: thermal expansion of seawater, melting mountain glaciers, mass loss from the Greenland Ice Sheet, and mass loss from Antarctica, plus a smaller contribution from changes in land water storage. Thermal expansion dominated in the mid-twentieth century, but since the satellite altimetry era the combined ice contribution has overtaken it. The IPCC assessed a rise of about 0.20 metres in global mean sea level from 1901 to 2018, with the rate accelerating.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#海平面上升 #热膨胀 #冰盖亏损
为什么湿球温度比气温更能反映热浪对人体的致命性？
Why does wet-bulb temperature capture the lethality of a heatwave better than air temperature?
人体主要靠汗液蒸发散热，而蒸发速率取决于空气的水汽压差，湿球温度正是把温度与湿度合并成一个反映蒸发潜力的指标。当湿球温度接近皮肤温度约 35℃ 时，蒸发散热在理论上完全失效，即使健康人在阴凉处休息也无法维持体温平衡。实验室研究进一步发现，实际的不可代偿阈值往往低至 30℃ 左右的湿球温度，因此干热的 45℃ 有时反而比湿热的 35℃ 更容易应对。
The body sheds heat mainly by evaporating sweat, and evaporation depends on the vapour pressure difference with the air, which is exactly what wet-bulb temperature folds temperature and humidity into. When wet-bulb temperature approaches skin temperature near 35°C, evaporative cooling fails in principle, so even a healthy person resting in the shade cannot maintain thermal balance. Laboratory work shows the real uncompensable threshold is often nearer 30°C wet-bulb, which is why a dry 45°C day can be safer than a humid 35°C one.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Sherwood 与 Huber（2010）《美国科学院院刊》；Vecellio 等（2022）《Journal of Applied Physiology》
Sherwood and Huber (2010), PNAS; Vecellio et al. (2022), Journal of Applied Physiology
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1152/japplphysiol.00737.2021
#湿球温度 #热应激 #生理极限
IPCC 第六次评估报告的平衡气候敏感度范围是多少？与早先评估有何不同？
What is the equilibrium climate sensitivity range in the IPCC AR6, and how does it differ from earlier assessments?
AR6 把平衡气候敏感度（ECS）的最佳估计定为约 3°C，可能范围收窄到 2.5–4°C，并认为低于 1.5°C 的可能性极低。相比 AR5 给出的 1.5–4.5°C 宽区间，估算的不确定性显著降低。
AR6 sets the central estimate of equilibrium climate sensitivity (ECS) at about 3°C, with a likely range narrowed to 2.5–4°C and a very low chance of being below 1.5°C. Compared with AR5's 1.5–4.5°C range, the uncertainty is substantially reduced.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#气候敏感度 #IPCC #辐射强迫
什么是BECCS负排放技术？
What is the BECCS negative-emission technology?
BECCS是结合生物质能发电与碳捕集封存的技术：植物吸碳、燃烧发电、再把CO2注入地下。由于原料生长吸碳而尾端封碳，理论上可实现净负排放。其大规模部署面临土地、水和成本的激烈竞争。
BECCS combines bioenergy power with carbon capture and storage: plants absorb carbon, combustion generates power, and the CO2 is injected underground. Because feedstock growth draws carbon while the tail end stores it, it can achieve net-negative emissions in theory. Large-scale deployment faces fierce competition for land, water, and cost.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#BECCS #负排放 #碳捕集
大气气溶胶对气候有什么影响？
How do atmospheric aerosols affect climate?
气溶胶是悬浮在空气中的微小颗粒，部分（如硫酸盐）反射阳光而产生冷却效应，部分（如黑碳）吸收热量而增温。它们寿命短、空间分布不均，使区域气候和降水复杂化，也给气候预测带来较大不确定性。气溶胶的减排可能短暂暴露被其掩盖的变暖。
Aerosols are tiny suspended particles; some, like sulfates, reflect sunlight and cool the climate, while others, like black carbon, absorb heat and warm it. They are short-lived and unevenly distributed, complicating regional climate and rainfall and adding uncertainty to projections. Reducing aerosols may briefly reveal warming they had masked.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#气溶胶 #辐射强迫 #气候不确定性
温室气体是如何让地球升温的？"辐射强迫"又是什么意思？
How do greenhouse gases warm the Earth, and what does radiative forcing actually mean?
太阳的短波辐射大部分能穿过大气加热地面，地面则向外发出长波红外辐射；二氧化碳等温室气体吸收部分红外辐射并向下重新辐射，把能量“锁”在地表附近，这就是温室效应。辐射强迫用来量化某一因素（如二氧化碳浓度变化）对地球辐射收支的净扰动，单位是瓦特每平方米。例如大气二氧化碳浓度翻倍造成的直接辐射强迫约为3.7 W/m²，正值意味着能量入大于出、系统升温。
Shortwave sunlight passes through the atmosphere and warms the surface, which re-emits longwave infrared radiation. Greenhouse gases such as CO2 absorb part of that infrared and re-radiate it back downward, trapping energy near the ground — the greenhouse effect. Radiative forcing quantifies how strongly a factor (such as changing CO2 levels) perturbs the planet's energy balance, in watts per square metre. Doubling atmospheric CO2 produces a direct forcing of about 3.7 W/m²; a positive value means more energy in than out, so the climate warms.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#温室效应 #辐射强迫 #二氧化碳
海洋热含量（OHC）为何被视为比地表气温更可靠的变暖指标？
Why is Ocean Heat Content a more reliable warming indicator than surface air temperature?
海洋吸收了超过90%的地球能量盈余，热惯性巨大、年际噪声小，能平滑地反映气候系统的总能量积累；而地表气温受厄尔尼诺、火山等短期因素扰动明显。因此OHC趋势是温室气体强迫最稳健的物理证据之一。
The ocean absorbs over 90% of Earth's energy surplus, with huge thermal inertia and low year-to-year noise, so it tracks the system's total energy gain smoothly; surface air temperature is noisier due to ENSO and volcanic swings. OHC trend is thus one of the most robust fingerprints of greenhouse forcing.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#海洋热含量 #能量收支
IPCC 第六次评估指出，当前全球已比工业化前升温约多少，其中多大比例可归因于人类活动？
According to IPCC AR6, how much has global warming reached above pre-industrial levels, and what share is attributed to human activity?
IPCC 第六次评估（2021/2023）指出，2011–2020年全球地表已比1850–1900年工业化前水平升温约1.1℃，并且“毋庸置疑”地，人类活动是这一变暖的主要驱动，估计贡献了约1.07℃的升温。报告还强调若不迅速深度减排，1.5℃阈值将在2030年代被突破。
The IPCC Sixth Assessment (2021/2023) reports that from 2011–2020 the global surface was about 1.1°C warmer than the 1850–1900 pre-industrial level, and it is 'unequivocal' that human activity is the dominant driver, contributing an estimated ~1.07°C of that warming. The report stresses that without rapid, deep cuts the 1.5°C threshold could be crossed in the 2030s.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#AR6 #1.1℃ #人为归因 #工业化前 #1.5℃阈值
什么是平衡气候敏感度？IPCC 第六次评估报告给出的区间为什么比过去更窄？
What is equilibrium climate sensitivity, and why did the IPCC Sixth Assessment Report narrow its range?
平衡气候敏感度指大气二氧化碳浓度加倍、气候系统重新达到平衡后全球平均地表温度的总升幅。AR6 把古气候记录、工业化以来的观测和过程理解三条证据线交叉约束，把最佳估计定为约 3℃，可能区间收窄到 2.5–4℃。收窄的关键突破是对低云反馈的量化，此前它是不确定性的最大来源。
Equilibrium climate sensitivity is the total rise in global mean surface temperature once the climate system re-equilibrates after a doubling of atmospheric carbon dioxide. AR6 combined three independent lines of evidence — paleoclimate records, the historical instrumental record, and process understanding — to set a best estimate near 3°C with a likely range of 2.5–4°C. The decisive advance was better quantification of low-cloud feedback, previously the dominant source of spread.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#气候敏感度 #云反馈 #IPCC
甲烷的百年增温潜势约 28，二十年潜势却超过 80，这个差别为何在政策上很重要？
Methane has a 100-year global warming potential near 28 but a 20-year value above 80 — why does that gap matter for policy?
甲烷在大气中的化学寿命约 12 年，因此把它的辐射效应摊到 100 年会被大幅稀释，而摊到 20 年则显得极强；AR6 给出化石源甲烷 GWP-100 约 29.8、GWP-20 约 82.5。这意味着削减甲烷能在十年尺度上快速压低升温速率，是争取时间的杠杆；但甲烷减排不能替代二氧化碳减排，因为只有累积二氧化碳决定长期峰值温度。用哪个时间尺度核算，会直接改变畜牧业、油气泄漏等部门的相对责任。
Methane's atmospheric lifetime is about twelve years, so spreading its radiative effect over a century dilutes it heavily, while a twenty-year horizon makes it look far more potent; AR6 gives fossil methane a GWP-100 of about 29.8 and a GWP-20 of about 82.5. Cutting methane therefore slows the rate of warming within a decade, buying time, but it cannot substitute for CO2 cuts because only cumulative CO2 sets the long-term peak temperature. The choice of horizon directly reshapes the relative burden placed on livestock, oil and gas leakage, and waste sectors.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#甲烷 #增温潜势 #短寿命气候污染物
冰芯如何帮助科学家重建古代大气二氧化碳浓度？
How do ice cores help scientists reconstruct ancient atmospheric CO2?
在南极和格陵兰钻取的冰芯封存了数万年来被困在气泡中的古空气。分析这些气泡的气体成分即可直接测得当时的CO2和甲烷浓度。冰层厚度与同位素还提供了温度与年代信息，使过去80万年气候得以精确复原。
Ice cores drilled in Antarctica and Greenland trap ancient air in bubbles dating back hundreds of thousands of years. Analyzing the gas in those bubbles directly reveals past CO2 and methane concentrations. Layer thickness and isotopic ratios also give temperature and age information, reconstructing climate over the last 800,000 years.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
美国国家冰雪数据中心;《自然》
NSIDC;Nature
#冰芯 #古气候 #二氧化碳
气候风险保险如何运作？为什么高负担地区反而难以投保？
How does climate risk insurance work, and why is it hardest to insure in the most burdened regions?
参数保险（又称指数保险）预先约定降雨、台风等天气指标的赔付阈值，指标一旦达标便自动赔付，无需现场查勘。这样农户和脆弱地区能在灾害后快速获得资金，缩短了传统理赔的漫长流程。但高风险的地区保费随之水涨船高，私人市场往往定价失灵，需要政府补贴和再保险机制托底。同时必须认识到，保险只分担财务损失，不能替代根本性的减排与适应行动。
Parametric (index) insurance pre-agrees payout thresholds for weather indicators such as rainfall and typhoon intensity, and pays out automatically once a threshold is crossed, without on-site claims inspection. This lets farmers and vulnerable regions receive funds quickly after a disaster, bypassing slow traditional claims processes. But in high-risk zones premiums soar and private markets often fail, so government subsidies and reinsurance backstops are needed. It must also be recognised that insurance only shares financial losses and cannot replace mitigation and adaptation.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Barnett, Barrett, Skees,《Poverty Traps and Index-Based Risk Transfer Products》,World Development,2008 (DOI: 10.1016/j.worlddev.2007.10.016)
Barnett, Barrett, Skees, 'Poverty Traps and Index-Based Risk Transfer Products', World Development, 2008, DOI: 10.1016/j.worlddev.2007.10.016
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1016/j.worlddev.2007.10.016
#气候保险 #指数保险 #气候风险
为什么国际海事组织的船舶限硫令可能反而让海洋升温更明显？
Why might the International Maritime Organization's sulphur cap have made ocean warming more visible?
船舶重油燃烧释放的二氧化硫会生成硫酸盐气溶胶，既直接反射阳光，又充当云凝结核让海洋低云更亮更持久，从而长期抵消了一部分温室气体增温。2020 年生效的 MARPOL 附则六限硫令把燃料硫含量上限从 3.5% 压到 0.5%，航道上的船舶航迹云随之显著减少。这等于突然揭掉了一层遮阳伞，研究者据此估算北太平洋等繁忙航线区域获得了额外的正辐射强迫。
Sulphur dioxide from heavy marine fuel forms sulphate aerosol that both scatters sunlight directly and seeds brighter, longer-lived marine low clouds, offsetting part of greenhouse warming for decades. The MARPOL Annex VI cap that took effect in 2020 cut fuel sulphur content from 3.5% to 0.5%, and satellite-visible ship tracks over major shipping lanes thinned sharply. Removing that inadvertent sunshade added positive radiative forcing over busy corridors such as the North Pacific, an effect researchers have described as a termination shock.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#硫酸盐气溶胶 #船舶航迹云 #辐射强迫
云反馈为什么是气候预测中最大的不确定来源之一？
Why is cloud feedback one of the largest uncertainties in climate projections?
低云又白又亮，会把阳光反射回太空而起降温作用；高云像毯子一样困住热量而起增温作用。云的形成和响应很复杂，模型之间差异大，因此云反馈方向仍不完全确定。
Low bright clouds reflect sunlight and cool the planet, while high clouds trap heat like a blanket. Cloud formation and its response to warming are complex and vary across models, so the sign and size of cloud feedback remain uncertain.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#云反馈 #反照率 #气候模型
云对气候变化有什么反馈作用？
What feedback role do clouds play in climate change?
云既能反射阳光产生冷却，也能像毯子一样截留热量产生增温，净效应取决于云的类型和高度。低云多偏冷却，高云多偏增温，而气候变暖如何改变云量仍是模型最大不确定源之一。云反馈可能放大或缓和升温。
Clouds both reflect sunlight to cool and trap heat like a blanket to warm, with the net effect depending on type and altitude. Low clouds tend to cool, high clouds to warm, and how warming changes cloud cover is among the largest uncertainties in models. Cloud feedback can amplify or dampen warming.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#云 #气候反馈 #不确定性
气候模型为何预测极地放大而非均匀变暖？温度直减率反馈在其中起什么作用？
Why do climate models project polar amplification rather than uniform warming, and what role does lapse-rate feedback play?
极地放大主要来自冰雪反照率反馈与大气热量向两极输送，而热带对流层温度直减率反馈较强，使热带地表增温小于全球平均。这些区域反馈叠加，造成增温在纬度上高度不均。
Polar amplification arises mainly from ice-albedo feedback and poleward heat transport, while the tropical lapse-rate feedback is strongly negative, making tropical surface warming smaller than the global mean. These regional feedbacks combine to produce highly uneven warming by latitude.
难度 专业 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#极地放大 #直减率反馈 #气候反馈
物候观测（如樱花开花、燕子归来）为什么是气候变化的“民间温度计”？
Why are phenology records (cherry bloom, swallow return) a 'folk thermometer' of climate change?
动植物对温度极敏感，春季物候普遍提前、秋季推迟，长期序列能直接显示某地变暖多少天。大量市民记录填补了专业站点稀疏的空白，比单次测量更稳。
Plants and animals are temperature-sensitive; springs arrive earlier and autumns later, and long series show exactly how many warming days a place gained. Citizen logs fill gaps between sparse stations, steadier than single measurements.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#物候 #气候变化 #公民记录
极端天气归因研究如何得出某场热浪概率增加了多少倍这类结论？
How does extreme event attribution conclude that a heatwave became so many times more likely?
研究者用大规模气候模式集合分别模拟两个世界：一个是含有真实人为强迫的现实世界，另一个是移除人类温室气体与气溶胶影响的反事实世界。统计同等强度事件在两个世界中的重现期，比值就是概率变化倍数，同时还会用长期观测序列做独立检验。世界天气归因联盟据此在事件发生后数周内发布快速归因结论，例如判定 2021 年北美西部热穹顶在无人类影响的气候中几乎不可能出现。
Researchers run large climate-model ensembles for two worlds: the factual one with observed anthropogenic forcing, and a counterfactual one with human greenhouse gas and aerosol influence removed. Comparing the return periods of an equally intense event in each world yields the change in likelihood, and long observational records are used as an independent check. The World Weather Attribution collaboration applies this to publish rapid assessments within weeks, concluding for instance that the 2021 Pacific Northwest heat dome would have been virtually impossible without human influence.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#事件归因 #反事实模拟 #热浪
什么是海洋冰盖不稳定性？为什么南极思韦茨冰川被称为末日冰川？
What is marine ice sheet instability, and why is Antarctica's Thwaites Glacier called the doomsday glacier?
当冰盖坐落在向内陆倾斜的基岩上、接地线又位于海平面以下时，接地线一旦后退，冰体厚度和流出通量会随之增大，形成自我加速的正反馈，这就是海洋冰盖不稳定性。思韦茨冰川的集水盆地正处在这种地形上，且暖化的环极深层水正在从下方侵蚀其冰架。若该盆地大范围失稳，可能贡献半米以上的全球海平面上升，并连带影响西南极其他冰流。
Marine ice sheet instability arises where an ice sheet rests on bedrock that deepens inland and its grounding line lies below sea level: once the grounding line retreats, ice thickness and outflow at that line increase, creating a self-accelerating feedback. Thwaites Glacier drains a basin with exactly this geometry, and warm Circumpolar Deep Water is eroding its ice shelf from beneath. Wholesale destabilisation of that basin could add more than half a metre to global sea level and undermine neighbouring West Antarctic ice streams.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
DeConto 与 Pollard（2016）《Nature》；国际思韦茨冰川合作计划（ITGC）
DeConto and Pollard (2016), Nature; International Thwaites Glacier Collaboration
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1038/nature17145（复合著录按段核验：本标识只担保第一段 DeCo
#海洋冰盖不稳定性 #思韦茨冰川 #海平面上升
水蒸气是最强的温室气体吗？为什么科学家说它是“反馈”而不是“强迫”？
Is water vapour the strongest greenhouse gas, and why do scientists call it a feedback rather than a forcing?
水蒸气确实贡献了最大的温室增温份额，但它的浓度并不由人类直接控制，而是随温度变化：空气越暖能容纳的水汽越多。二氧化碳等“外强迫”先把地球加热，升温的空气容纳更多水汽，进一步放大增温，构成水汽正反馈。因此气候学上把水蒸气视为放大变化的反馈，把二氧化碳视为驱动变化的强迫，这也是大气二氧化碳增加格外受关注的原因。
Water vapour indeed contributes the largest share of the greenhouse effect, but its concentration is not controlled directly by humans — it follows temperature: warmer air can hold more moisture. External forcings such as CO2 warm the planet first; warmer air then holds more water vapour, which amplifies the warming. This is the water-vapour feedback. So climatologists treat water vapour as a feedback that magnifies change, while CO2 is a forcing that drives change — which is why rising atmospheric CO2 gets so much attention.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#水蒸气 #气候反馈 #二氧化碳
气候模型是如何运作的？它凭什么能预测未来几十年的气候？
How do climate models work, and how can they predict the climate decades ahead?
气候模型把大气、海洋、陆冰和陆地拆成全球网格，用物理、化学与生态过程的方程组逐格模拟能量、水汽、碳与动量的交换，再输入不同的温室气体排放情景进行推演。模型经过历史气候回测与多模型交叉验证，可信度不断提升；IPCC第六次评估报告对未来的预测正是建立在这些模型的集合结果之上。
Climate models divide the atmosphere, ocean, ice sheets and land into a global grid and solve equations for the physical, chemical and biological processes that move energy, moisture, carbon and momentum between cells. Driven by different emissions scenarios, they project future climate. Their credibility rests on successfully reproducing past climate and on agreement across many independent models; the projections of the IPCC Sixth Assessment Report build on such model ensembles.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#气候模型 #数值模拟 #IPCC
什么是全球碳收支，它如何被核算？
What is the global carbon budget and how is it accounted for?
全球碳收支量化每年人为排放与自然界（大气、海洋、陆地）之间碳的源汇平衡。科学家通过排放清单、大气观测卫星、海洋浮标和生态模型综合估算各通量。若观测到的大气增长加上海洋与陆地吸收不等于排放，则表明存在未被完全理解的通量。
The global carbon budget quantifies the annual balance of carbon sources and sinks among human emissions and natural reservoirs (atmosphere, ocean, land). Scientists combine emission inventories, atmospheric satellite observations, ocean buoys, and ecosystem models to estimate each flux. A mismatch between emissions and the sum of atmospheric growth plus ocean and land uptake reveals poorly understood fluxes.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
全球碳计划;《自然》
Global Carbon Project;Nature
#碳收支 #碳通量 #气候科学
甲烷水合物（可燃冰）有什么气候风险？
What climate risk do methane hydrates (flammable ice) pose?
甲烷水合物是封存于海底与冻土中的固态甲烷，在升温或减压时可能不稳定释放。若大规模释放，会显著增加大气甲烷、强化变暖，构成潜在正反馈。目前其释放规模与时机仍不确定，是研究的重点风险。
Methane hydrates are solid methane locked in seafloor and permafrost that can destabilize and release under warming or pressure drop. Large releases would sharply raise atmospheric methane and reinforce warming, a potential feedback. Their scale and timing remain uncertain, making them a key research risk.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#甲烷水合物 #可燃冰 #气候风险
为什么对流层在变暖而平流层却在变冷？
Why is the troposphere warming while the stratosphere cools?
二氧化碳增多让低层大气（对流层）更好地留住热量而升温；同时平流层吸收的红外辐射变少，加上臭氧损耗，于是整体变冷。这种“下暖上冷”是温室气体增加的典型指纹。
More CO₂ lets the lower atmosphere (troposphere) retain heat and warm, while the stratosphere absorbs less outgoing infrared and, with ozone loss, cools overall. This 'warm below, cool above' pattern is a classic fingerprint of greenhouse forcing.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#平流层冷却 #对流层 #温室气体指纹
基于自然的防洪为什么往往优于纯混凝土堤防？
Why is nature-based flood management often better than purely concrete levees?
河流泛滥本是自然过程：恢复泛滥平原、再连通河道与湿地，等于给河流“泄洪空间”，能削减洪峰、减轻堤防压力，同时为鱼类产卵和鸟类栖息创造生境。混凝土堤防虽能局部挡水，却抬高下游洪峰、切断生态连通，维护成本也高。把绿色与灰色基建结合，效果通常最佳。
River flooding is a natural process: restoring floodplains and reconnecting channels and wetlands gives rivers room to flood, trimming peaks and easing levee pressure while creating habitat for fish spawning and birds. Concrete levees block water locally but raise downstream peaks and sever ecological connectivity at high maintenance cost. Combining green and grey infrastructure usually works best.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
《Nature Sustainability》2022 年防洪成本效益研究
Nature Sustainability 2022 flood cost-benefit
#自然防洪 #泛滥平原 #绿色基建
什么是反照率效应？
What is the albedo effect?
反照率指地表反射太阳辐射的比例，雪、冰和云的反照率高，能反射较多阳光使地表降温。当冰川融化露出深色海洋或陆地，反照率下降，吸收更多热量，进一步加速变暖，形成正反馈。这种机制会放大初始的气候强迫。
Albedo is the fraction of solar radiation reflected by a surface; snow, ice, and clouds have high albedo and cool the planet by reflecting sunlight. When ice melts to reveal dark ocean or land, albedo drops and more heat is absorbed, accelerating warming in a positive feedback. This mechanism amplifies the initial climate forcing.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#反照率 #冰雪 #反馈
平流层气溶胶注入这类太阳辐射管理为何被认为风险很高？
Why is solar radiation management such as stratospheric aerosol injection considered high-risk?
向平流层注入硫酸盐前体可以模仿大型火山喷发反射阳光，理论上快速降低全球平均温度，成本相对低廉。风险在于它只遮挡阳光而不减少二氧化碳，海洋酸化继续，且降温在空间上不均匀，可能改变季风与热带降水格局，使部分地区旱涝加剧。更棘手的是终止冲击：一旦持续注入中断，被压抑的升温会在数年内集中释放。此外硫酸盐会延缓臭氧层恢复，而全球治理机制尚不存在，谁有权决定部署本身就是难题。
Injecting sulphate precursors into the stratosphere could mimic a large volcanic eruption to reflect sunlight, lowering global mean temperature quickly and at relatively low direct cost. The risks are that it masks warming without removing carbon dioxide, so ocean acidification continues, and that the cooling is spatially uneven, potentially shifting monsoons and tropical rainfall and worsening drought or flooding in some regions. More troubling is termination shock: if sustained injection stopped, suppressed warming would arrive within a few years. Sulphate would also delay ozone layer recovery, and with no governance regime in place, deciding who may deploy it is itself an unresolved problem.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#太阳辐射管理 #平流层气溶胶 #终止冲击
直接空气捕集（DAC）技术是什么？
What is direct air capture (DAC) technology?
直接空气捕集（DAC）利用化学吸附材料直接从周围空气中提取稀薄的CO2，再压缩运输以便封存或再利用。它不依赖集中排放源，可在任何地方部署，但能耗与成本目前很高。它被视为抵消难减排排放的后备手段。
DAC uses sorbent materials to extract dilute CO2 straight from ambient air, then compresses it for storage or reuse. It does not need a concentrated emission source and can be deployed anywhere, but energy use and cost are currently high. It is seen as a backup to offset hard-to-abate emissions.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#直接空气捕集 #负排放 #碳移除
为什么北极变暖速度比全球平均更快？
Why is the Arctic warming faster than the global average?
北极放大主要源于冰雪反照率反馈：海冰融化露出深色海水，吸收更多太阳辐射。此外，极地大气层中热量与水汽的再分配也增强了增温。结果是北极升温速度可达全球平均的二到四倍。
Arctic amplification is driven mainly by ice-albedo feedback: melting sea ice exposes dark ocean that absorbs more solar energy. Redistribution of heat and moisture in the polar atmosphere further enhances warming. As a result, the Arctic can warm two to four times faster than the global average.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#北极放大 #反照率反馈 #海冰
2022 年汤加洪阿哈阿帕伊火山喷发为何被认为可能造成短期增温，而不像多数火山那样降温？
Why is the 2022 Hunga Tonga-Hunga Haʻapai eruption thought to cause short-term warming rather than the cooling typical of volcanoes?
多数大型火山喷发的降温效应来自注入平流层的二氧化硫转化成硫酸盐气溶胶反射阳光，例如 1991 年皮纳图博火山。汤加火山口位于浅海之下，喷发把约 1.5 亿吨水汽送入平流层，使平流层水汽总量增加约一成，而硫的注入量相对有限。水汽是强温室气体，滞留时间可达数年，因此这次事件的净效应更偏向短期增温并改变平流层化学与臭氧。
Most large eruptions cool the surface because stratospheric sulphur dioxide converts to sulphate aerosol that reflects sunlight, as after Pinatubo in 1991. The Tongan vent sat beneath shallow ocean, so the blast injected roughly 150 teragrams of water vapour into the stratosphere — around a 10% increase in its total burden — while delivering comparatively little sulphur. Water vapour is a strong greenhouse gas with a multi-year stratospheric residence time, so the net effect leaned toward brief warming while also perturbing stratospheric chemistry and ozone.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
Millán 等（2022）《Geophysical Research Letters》；美国国家航空航天局喷气推进实验室 MLS 观测
Millán et al. (2022), Geophysical Research Letters; NASA Jet Propulsion Laboratory, Microwave Limb Sounder observations
#火山喷发 #平流层水汽 #辐射效应
在北极放大效应的归因中,海冰反照率反馈与水汽反馈的作用如何区分开来?
Within the attribution of Arctic amplification, how can the roles of the sea-ice albedo feedback and the water-vapour feedback be distinguished?
夏季海冰退缩令开阔水面吸收的短波辐射成倍增长,是近地表增暖的直接推手,而推迟的结冰又延长了吸能窗口,构成季节锁相的反照率反馈。水汽作为强温室气体,其向下长波辐射在秋冬主导表层升温,并把夏季热量储于上层海洋缓慢释放。辐射通量观测与模式敏感性试验都显示两条反馈的季节峰值错开,据此可将二者定量分解。
Summer sea-ice retreat multiplies shortwave absorption over open water and directly drives near-surface warming, while delayed freeze-up lengthens the energy-gaining window, giving the albedo feedback a locked seasonal phase. Water vapour, a powerful greenhouse gas, dominates surface heating through downward longwave radiation in autumn and winter and slowly releases heat stored in the upper ocean. Radiometric observations and model sensitivity experiments alike show the two feedbacks peaking in different seasons, which permits their quantitative separation.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#反照率反馈 #水汽反馈
大西洋经向翻转环流（AMOC）是什么，它减弱会有什么后果？
What is the Atlantic Meridional Overturning Circulation (AMOC), and what happens if it weakens?
AMOC 是一股把温暖表层水向北输送、把冷水向南下沉返回的大洋环流，对西欧的温和气候至关重要。观测显示它已明显减弱，若进一步减弱会导致北大西洋沿岸变冷、季风与降雨格局紊乱。
The AMOC is an ocean current that carries warm surface water northward and returns cold deep water southward, helping keep Western Europe mild. Observations show it has weakened markedly; further weakening could cool the North Atlantic and disrupt monsoon and rainfall patterns.
难度 专业 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#AMOC #温盐环流 #大洋环流
气候模型是怎样预测未来气候的？
How do climate models project future climate?
气候模型用物理方程在计算机上模拟大气、海洋、冰和陆地的相互作用，并以不同排放情景推算未来。它们能再现历史气候并给出趋势，但对云、反馈等细节仍有不确定性。多模型集合提高了结论的可信度。
Climate models use physical equations on computers to simulate interactions among atmosphere, ocean, ice, and land, projecting futures under different emission scenarios. They reproduce past climate and show trends, though uncertainties remain in clouds and feedbacks. Multi-model ensembles increase confidence in conclusions.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#气候模型 #情景 #预测
为什么控制甲烷排放能在短期内迅速见效？
Why does cutting methane emissions slow warming so quickly?
甲烷在20年尺度上的增温潜势约为二氧化碳的80多倍，但它在大气中只能存留约十年，远短于二氧化碳的数百年。因此削减甲烷、黑碳等短寿命气候污染物，能在几年内看到明显效果，被联合国环境规划署称为实现1.5°C目标“最快最有力”的措施之一，同时还能改善空气质量。
Methane warms about 80 times more than CO2 over a 20-year horizon, yet it survives in the atmosphere only about a decade, versus centuries for CO2. Cutting methane, black carbon and other short-lived climate pollutants therefore slows warming within a few years — UNEP calls methane cuts among the fastest and strongest levers for the 1.5°C goal — while also improving air quality.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#甲烷 #短寿命污染物 #减排
什么是“厄尔尼诺”与“拉尼娜”现象，它们如何影响全球气候？
What are El Niño and La Niña, and how do they influence global climate?
厄尔尼诺与拉尼娜是赤道太平洋海温异常波动的两种相位：厄尔尼诺时东太平洋异常偏暖，拉尼娜时异常偏冷。它们会改变全球大气环流，引发不同地区干旱、洪涝、台风强度等极端事件，是年际气候变率最重要的自然信号之一。
El Niño and La Niña are opposite phases of anomalous sea-surface temperature in the equatorial Pacific—El Niño is unusually warm in the eastern Pacific, La Niña unusually cool. They shift global atmospheric circulation, triggering droughts, floods, and changes in storm intensity across regions, making them among the most important natural signals of year-to-year climate variability.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
美国国家海洋和大气管理局（NOAA）气候预测中心（CPC）ENSO 监测与“ENSO 博客”；世界气象组织（WMO）《厄尔尼诺/拉尼娜通报》
U.S. NOAA Climate Prediction Center (CPC) ENSO monitoring and 'ENSO Blog'; WMO 'El Niño/La Niña Update'
#厄尔尼诺 #拉尼娜 #赤道太平洋 #海温异常 #极端事件
极地涡旋减弱为什么会让中纬度地区出现寒潮？
Why does a weakened polar vortex bring cold snaps to mid-latitudes?
极地涡旋是环绕极地、把冷空气锁在高纬度的强风环流。当它减弱或变形，寒冷的极地空气就会大范围向南溢出，导致中纬度地区突发严寒。
The polar vortex is a band of strong winds circling the pole that traps cold air at high latitudes. When it weakens or deforms, frigid polar air spills far southward, causing sudden cold outbreaks in mid-latitudes.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#极地涡旋 #寒潮 #急流
什么是碳通量？
What is a carbon flux?
碳通量指碳在单位时间内从一个储库转移到另一个储库的速率，如光合作用吸碳、呼吸与燃烧排碳。理解通量大小与方向是评估碳汇强弱的关键。通量可正可负，正负之差决定某区域是源还是汇。
A carbon flux is the rate at which carbon moves from one reservoir to another over time, such as uptake by photosynthesis or release by respiration and burning. Understanding its size and direction is key to judging sink strength. A flux can be positive or negative; their difference decides whether a region is a source or sink.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#碳通量 #碳循环 #碳汇
巴黎协定中1.5℃目标是什么意思？
What does the 1.5°C target in the Paris Agreement mean?
1.5℃指相对于工业化前水平，努力将全球平均升温控制在1.5摄氏度以内。相比2℃，把升温限制在1.5℃可显著降低极端高温、海平面上升和生态损失的风险。实现它需要在本世纪中叶前后达到净零排放。
The 1.5°C refers to limiting global average warming to 1.5 degrees Celsius above preindustrial levels. Compared with 2°C, holding at 1.5°C substantially reduces risks of extreme heat, sea level rise, and ecological loss. Achieving it requires reaching net-zero emissions around mid-century.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#巴黎协定 #1.5℃ #升温目标
为什么用二氧化碳当量（CO2e）来比较不同温室气体？
Why use carbon dioxide equivalent (CO2e) to compare greenhouse gases?
不同温室气体增温能力和存留时间差异巨大，难以直接用质量比较。CO2e以二氧化碳为基准，按给定时间窗（如100年）的增温潜势把其他气体折算成等效的CO2质量。这使排放清单和政策目标可以用单一单位衡量总温室效应。
Greenhouse gases differ greatly in warming power and lifetime, so they cannot be compared by mass directly. CO2e uses carbon dioxide as a reference and converts other gases into an equivalent CO2 mass using a warming potential over a set horizon, such as 100 years. This lets emission inventories and policy targets express total warming impact in one unit.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#二氧化碳当量 #增温潜势 #排放核算
为什么说“食物系统转型”是气候行动的关键？
Why is food-system transformation key to climate action?
食物系统占全球温室气体排放约三分之一，范围涵盖农业、土地利用、运输与食物浪费。与此同时，全球既存在营养不良，也存在严重的食物浪费，两者并存。转型路径包括减少浪费、适度转向植物性饮食、推广再生农业和改善冷链。这些措施既能减排又能提升营养安全，被IPCC视为低成本、高潜力的减碳路径。
Food systems account for roughly one-third of global greenhouse gas emissions, spanning farming, land use, transport, and food waste. At the same time, malnutrition and food waste coexist worldwide. Transformation paths include cutting waste, shifting diets moderately toward plants, scaling regenerative agriculture, and improving cold chains. These measures both cut emissions and improve nutrition security, which is why IPCC treats them as a low-cost, high-potential mitigation path.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
《Science》食物系统排放研究
Science food system emissions
#食物系统 #农业排放 #粮食安全
全球碳循环的主要储库有哪些？
What are the major reservoirs of the global carbon cycle?
地球碳主要储存在岩石圈（如石灰岩）、海洋、土壤、植被和大气中。大气碳库虽然相对较小，却直接调控气候。人类活动正快速把地下的岩石碳（化石燃料）转移到大气之中。
Earth's carbon is stored mainly in the lithosphere (e.g., limestone), oceans, soils, vegetation, and the atmosphere. The atmospheric pool is relatively small but directly regulates climate. Human activity is rapidly moving carbon from underground rock reservoirs (fossil fuels) into the atmosphere.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
全球碳计划;《自然》综述
Global Carbon Project;Nature Reviews
#碳循环 #碳储库 #气候
大西洋经向翻转环流（AMOC）如何影响欧洲气候？它的减弱意味着什么？
How does the Atlantic Meridional Overturning Circulation (AMOC) influence European climate, and what does its weakening imply?
AMOC 把温暖的表层海水从热带输送到北大西洋，使西欧冬季比同纬度地区温和。观测显示其强度已降至千年来的低位，若进一步减弱可能导致欧洲变冷、沿海海平面上升与季风紊乱。
The AMOC carries warm surface water from the tropics to the North Atlantic, keeping Western Europe milder in winter than other regions at similar latitudes. Observations show its strength is near a millennium low, and further weakening could cool Europe, raise coastal sea levels, and disrupt monsoons.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#AMOC #海洋环流 #大西洋
什么是“反照率（albedo）”效应，它与冰雪消融之间如何形成正反馈？
What is the albedo effect, and how does it create a positive feedback with melting ice and snow?
反照率是地表反射太阳辐射的比例，冰雪反照率很高（约0.6–0.9），能大量反射阳光。当气候变暖使冰雪融化、露出深色海洋或陆地时，反照率下降、吸收更多热量，进一步加速融化和升温，形成正反馈。这种“冰雪—反照率反馈”会放大北极等地区的增温。
Albedo is the fraction of incoming solar radiation reflected by a surface; snow and ice have high albedo (about 0.6–0.9) and reflect most sunlight. When warming melts ice and snow to expose darker ocean or land, albedo drops and more heat is absorbed, which further accelerates melting and warming—creating a positive feedback. The ice–albedo feedback strongly amplifies warming in regions like the Arctic.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#反照率 #正反馈 #冰雪消融 #北极放大 #太阳辐射
厄尔尼诺和拉尼娜如何影响全球气候？
How do El Niño and La Niña affect global climate?
二者是赤道中东太平洋海温的周期性振荡。厄尔尼诺时东太平洋增暖，使东南亚干旱、南美西岸多雨、全球均温偏高；拉尼娜则相反，常带来我国南方低温雨雪及大西洋飓风活跃。
They are periodic oscillations of equatorial Pacific sea-surface temperature. El Niño warms the eastern Pacific, bringing droughts to Southeast Asia, rains to western South America, and a warmer global average; La Niña reverses these and often boosts Atlantic hurricanes and cold spells in southern China.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#厄尔尼诺 #海气耦合
“基林曲线”记录了什么？
What does the Keeling Curve record?
基林曲线是夏威夷冒纳罗亚天文台自 1958 年起对大气二氧化碳浓度的连续测量，由查尔斯·基林开创。它清晰显示 CO₂ 浓度从约 315 ppm 上升到如今的 420 ppm 以上，并带有每年植物呼吸造成的锯齿波动。
The Keeling Curve is the continuous record of atmospheric CO₂ begun in 1958 at Mauna Loa by Charles Keeling. It shows CO₂ rising from about 315 ppm to over 420 ppm today, with a sawtooth pattern from the yearly breathing of plants.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#基林曲线 #二氧化碳监测 #冒纳罗亚
为什么科学家说地球正在“能量失衡”？多出来的热量去哪了？
Why do scientists say the Earth is in an energy imbalance, and where does the extra heat go?
地球从太阳获得的能量与它向太空散发的能量之间出现差额，就是地球能量不平衡。温室气体增强后，地球现在净吸收的能量超过散失的，相当于全球每平方米多吸收约0.9瓦；其中超过九成的多余热量被海洋吸收，表现为海温升高、海平面上升和更强烈的海洋热浪。
An energy imbalance is the gap between the solar energy the Earth absorbs and the heat it radiates to space. With more greenhouse gases, the planet now absorbs more than it loses — roughly 0.9 watts per square metre globally. Over 90 percent of that extra heat goes into the ocean, showing up as rising sea temperatures, sea-level rise and stronger marine heatwaves.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#能量收支 #海洋吸热 #海平面
厄尔尼诺年为什么常常刷新全球年平均气温纪录？
Why do El Niño years so often set new global annual temperature records?
厄尔尼诺期间赤道中东太平洋表层暖水扩张，抑制了冷水上涌，海洋把此前储存的热量大量释放给大气，全球平均气温因此在长期变暖趋势之上叠加约 0.1–0.2℃ 的短期抬升。世界气象组织指出，2023 年全球平均温度已比工业化前高约 1.45℃，正处在强厄尔尼诺发展期。反之，拉尼娜年会短暂压低数值，使一些人误判变暖已经停止。
During El Niño the warm surface layer of the central and eastern equatorial Pacific expands and cold upwelling weakens, so the ocean releases stored heat to the atmosphere and adds a short-term boost of roughly 0.1–0.2°C on top of the underlying warming trend. The World Meteorological Organization reported that 2023 ran about 1.45°C above pre-industrial levels while a strong El Niño was developing. La Niña years pull the figure down temporarily, which sometimes leads people to claim warming has paused.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
世界气象组织《2023 年全球气候状况》报告；美国国家海洋和大气管理局气候预测中心
WMO State of the Global Climate 2023; NOAA Climate Prediction Center
#厄尔尼诺 #年际变率 #温度纪录
为什么气候敏感度通常用2°C作为临界参考？
Why is climate sensitivity often referenced around 2°C as a threshold?
平衡气候敏感度指大气CO2浓度翻倍后长期地表温度的变化幅度，IPCC评估其很可能落在2.5–4°C之间。2°C源自《巴黎协定》设定的控温目标，低于该值可显著减少极端风险，但区域影响仍非线性累积。
Equilibrium climate sensitivity is the long-term temperature change after a doubling of atmospheric CO2, assessed by the IPCC as likely between 2.5–4°C. The 2°C figure comes from the Paris Agreement's target; staying below it sharply reduces tipping-point risks, though impacts still accumulate non-linearly.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#气候敏感性 #巴黎协定
厄尔尼诺现象与全球气温有什么关系？
How is the El Niño phenomenon related to global temperature?
厄尔尼诺是赤道东太平洋海温异常偏高的状态，会改变全球大气环流与降水格局。它通常使全球年均气温在随后一年明显抬升，并常促成最热年份的出现。拉尼娜则相反，往往暂时抑制全球升温。
El Niño is a state of unusually warm sea surface temperatures in the eastern equatorial Pacific that reshapes global atmospheric circulation and rainfall. It typically raises the global annual average temperature in the following year and often produces record-hot years. La Niña has the opposite effect, temporarily dampening global warming.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
世界气象组织《全球气候状况》年度公报（含厄尔尼诺对全球气温的影响）
WMO, State of the Global Climate annual reports
#厄尔尼诺 #海温 #全球气温
反照率反馈在北极放大效应中起了什么作用？
What role does albedo feedback play in Arctic amplification?
海冰和雪面反照率高，能反射大量阳光。升温使冰雪融化，露出深色海洋或陆地，吸收更多太阳辐射，进一步升温并加速融化，形成正反馈。这导致北极升温速率约为全球平均的2–4倍。
Ice and snow have high albedo, reflecting much sunlight. Warming melts them, exposing dark ocean or land that absorbs more solar energy, which warms further and melts more—a positive feedback. This makes Arctic warming roughly 2–4 times the global average.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#反照率 #北极放大
城市森林为什么能降低城市温度？
Why can urban forests lower city temperatures?
树木通过树冠遮阳减少地表吸热，通过蒸腾作用把水分转化为水汽带走热量，还能吸附颗粒物并吸收二氧化碳。研究表明，成片城市林地的降温幅度可达数摄氏度，能明显缓解热浪影响，堪称廉价的“自然空调”。
Trees shade surfaces to reduce heat absorption and cool air through transpiration, converting water into vapour and carrying heat away; they also trap particulate matter and absorb CO2. Studies show mature urban forest patches can cool cities by several degrees Celsius, noticeably easing heatwaves — a cheap natural air conditioner.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
中国科学院（城市森林研究）
Chinese Academy of Sciences (urban forest research)
#城市森林 #蒸腾降温 #热浪缓解
气溶胶对气候的冷却作用为何让减排变得复杂？
Why does aerosol cooling complicate emission cuts?
化石燃料燃烧排放的硫酸盐等气溶胶能反射阳光、形成云凝结核，短期掩盖了部分升温。若快速减排，气溶胶寿命仅数天到数周，其冷却效应会迅速消失，可能使短期升温暂时加速，即'减排骤冷反弹'风险。
Sulfate aerosols from fossil-fuel burning reflect sunlight and seed clouds, masking some warming in the short term. Because aerosols last only days to weeks, rapid cuts would swiftly remove that cooling and could temporarily accelerate warming—a 'aerosol-unmasking' rebound risk.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#气溶胶 #短期气候
海洋是如何吸收大气中二氧化碳的？
How does the ocean absorb atmospheric carbon dioxide?
海气界面的CO2会依据分压差向溶解度更高的海水中扩散，并转化为碳酸、碳酸氢根和碳酸根等溶解无机碳。寒冷的高纬度海域吸收能力更强，且通过生物泵把浮游生物固定的碳带入深海。海洋已吸收了约四分之一的人为CO2排放，但也因此面临酸化。
At the sea surface, CO2 diffuses into seawater where it is more soluble and is converted into dissolved inorganic carbon such as carbonic acid, bicarbonate, and carbonate ions. Cold high-latitude waters absorb more, and the biological pump carries plankton-fixed carbon to the deep ocean. The ocean has taken up roughly a quarter of human CO2 emissions but is thereby acidifying.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#海洋 #碳吸收 #碳循环
气候变化对季风系统有何影响？
How does climate change affect monsoon systems?
季风依赖海陆温差驱动，全球变暖改变了这一温差与大气环流，可能使季风更强但更不稳定。极端降水与突发干旱的风险随之上升，影响数十亿依赖季风农业的人口。
Monsoons are driven by land-sea temperature contrasts; warming alters those contrasts and atmospheric circulation, potentially making monsoons stronger but more erratic. Risks of extreme rainfall and sudden droughts rise, affecting billions who depend on monsoon agriculture.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#季风 #降水 #农业
季风的强弱变化，为什么会让中国一些地方涝、一些地方旱？
Why do shifts in monsoon strength bring floods in one place and drought in another?
季风把海洋暖湿气流送向大陆，强弱和进退一偏，雨带就南北摆动；偏强可能北涝南旱，偏弱可能南涝北旱，所以"雨下对地方"很关键。
The monsoon carries warm ocean moisture inland; when its strength and timing shift, the rain belt swings north or south—too strong may flood the north and dry the south, too weak the reverse.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#季风 #旱涝 #雨带
亚洲季风为什么会"按时"在夏天到来？
Why does the Asian monsoon arrive "on schedule" each summer?
根本是海陆热力差异：夏天陆地比海洋升温快、空气上升形成低压，把海洋湿空气"吸"过来；这种季节性的气压差像钟摆一样规律。
It's the land-sea thermal contrast: in summer land heats faster, air rises and forms low pressure that pulls in moist ocean air—a seasonal pressure swing as regular as a pendulum.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#海陆差异 #气压 #季风
二氧化碳在大气中大约能存留多久？
How long does carbon dioxide remain in the atmosphere?
二氧化碳并非有一个单一的寿命，它在大气、海洋和陆地之间被复杂分配。约一半的人为排放会在几年到几十年内被海洋和生物圈吸收，但仍有相当部分存留数百年，少量甚至超过千年。这意味着今天排放的CO2将在很长时期内持续影响气候。
Carbon dioxide does not have a single lifetime; it is cycled among the atmosphere, oceans, and land. About half of human emissions is taken up by oceans and the biosphere within years to decades, but a substantial fraction persists for centuries and some for over a millennium. This means today's CO2 emissions will influence climate for a very long time.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#碳循环 #二氧化碳 #大气滞留
树轮、珊瑚和冰芯分别能记录哪些气候“代用指标”？
What climate 'proxies' do tree rings, corals and ice cores each record?
树轮宽度与同位素反映温度、降水和干旱；珊瑚年层记录海温与盐度；冰芯封存气泡的 CO2/甲烷与同位素示踪古气温，三者相互交叉验证过去气候。
Tree-ring width and isotopes track temperature, precipitation and drought; coral bands record sea temperature and salinity; ice-core bubbles preserve CO2/methane and isotope paleo-temperature—cross-validating past climate.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#代用指标 #树轮 #冰芯
什么是碳汇？地球上有哪些重要的天然碳汇？
What is a carbon sink, and which natural systems are the most important ones?
碳汇是能把大气中的二氧化碳吸收并长期储存的自然或人工系统。森林、海洋、土壤是三大天然碳汇，海洋吸收了人类活动排放二氧化碳的约四分之一；红树林、海草床和盐沼等“蓝碳”系统单位面积固碳能力突出。保护、恢复并扩展碳汇，是减缓气候变暖的重要途径。
A carbon sink is a natural or artificial system that removes CO2 from the atmosphere and stores it over the long term. Forests, the ocean and soils are the three great natural sinks; the ocean absorbs roughly a quarter of human CO2 emissions, while blue carbon systems such as mangroves, seagrass beds and salt marshes sequester carbon at unusually high rates per hectare. Protecting and restoring these sinks is a key strategy for slowing climate change.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#碳汇 #森林 #海洋
什么是“大气河”？
What is an atmospheric river?
大气河是大气中又窄又长的强水汽输送带，能在短时间内把大量水汽从热带送到中纬度地区。它常给美国西海岸等地带来暴雨和洪水，但也能缓解干旱。
An atmospheric river is a narrow, elongated corridor of intense water-vapor transport that can move large amounts of moisture from the tropics to mid-latitudes. It often brings heavy rain and flooding to places like the U.S. West Coast, but can also relieve droughts.
难度 进阶 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#大气河 #水汽输送 #极端降水
应对气候变化中的“减缓”和“适应”有什么不同？
What is the difference between mitigation and adaptation in climate action?
“减缓”是指减少温室气体排放或增加碳汇，从根源上放慢气候变化的速度，如改用清洁能源。“适应”则是面对已经或不可避免的变暖，调整社会与自然系统以减少损害，如修建海堤、改良耐旱作物。两者缺一不可。
Mitigation means reducing greenhouse gas emissions or increasing sinks to slow climate change at its source, such as switching to clean energy. Adaptation means adjusting societies and ecosystems to unavoidable warming to limit harm, like building seawalls or drought-resistant crops. Both are essential.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#减缓 #适应 #气候行动
海洋吸收了那么多二氧化碳，海洋自身会发生什么？
The ocean absorbs so much CO2 — what happens to the ocean itself?
海洋吸收的二氧化碳约占人类排放的四分之一，大大减缓了大气升温，但二氧化碳溶于海水会生成碳酸、降低海水pH值，这就是海洋酸化。酸化会削弱贝类、珊瑚等生物形成碳酸钙外壳的能力。保护海洋健康，同样要从减排二氧化碳做起。
The ocean absorbs about a quarter of human CO2 emissions, greatly slowing atmospheric warming. But CO2 dissolving in seawater forms carbonic acid and lowers the pH — ocean acidification. Acidified water makes it harder for shellfish, corals and other creatures to build calcium-carbonate shells. Protecting the ocean therefore also starts with cutting CO2.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#海洋酸化 #碳酸钙 #pH
厄尔尼诺与拉尼娜（ENSO 的两种相位）有什么不同？
What is the difference between the El Niño and La Niña phases of ENSO?
厄尔尼诺期间东太平洋海面温度升高、信风减弱，常带来暖干天气；拉尼娜则相反，海面偏冷、信风增强，易引发洪涝与凉夏。两者每隔几年交替，显著影响全球降水与台风活动。
During El Niño, eastern Pacific sea-surface temperatures rise and trade winds weaken, often bringing warm, dry conditions; La Niña is the opposite, with cooler seas and stronger winds that favor floods and cooler summers. The two phases alternate every few years, strongly shaping global rainfall and typhoon activity.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#ENSO #厄尔尼诺 #拉尼娜
北极海冰融化后，为什么地球反而会“越融越快”？
Why does the Earth warm even faster once Arctic sea ice melts?
洁白的海冰能把大部分太阳光反射回太空，而深色的海水则会吸收更多阳光。当海冰融化、海面扩大，地球吸收的太阳能增多，海水升温又进一步加速融冰，形成“冰—反照率正反馈”。这也是北极变暖速度比全球平均快两到四倍的原因之一。
Bright sea ice reflects most sunlight back to space, while dark open ocean absorbs much more of it. As ice melts and open water expands, the planet absorbs more solar energy, the water warms further and melts even more ice — a self-reinforcing ice–albedo feedback. This is one reason the Arctic is warming two to four times faster than the global average.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#北极 #反照率 #正反馈
海洋吸收了全球变暖中的多少多余热量？
How much of the excess heat from global warming has the ocean absorbed?
由于海水热容量巨大，海洋吸收了气候系统中超过 90% 的多余热量。正是这个缓冲作用，使地表升温比单纯算大气时慢，但也导致海平面上升和海洋热浪。
Because of its enormous heat capacity, the ocean has absorbed more than 90% of the excess heat in the climate system. This buffer slows surface warming but also drives sea-level rise and marine heatwaves.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#海洋热含量 #热容量 #能量收支
城市如何应对越来越频繁的极端高温？
How can cities respond to increasingly frequent extreme heat?
城市降温靠“降温基础设施”：增加公园和行道树提供树荫，用浅色和反光屋顶减少吸热，建设绿地和蓝空间（水体）促进蒸发冷却，并设计通风廊道引导凉风。这些基于自然的降温措施比空调更节能，还能同时吸收雨水、提升宜居性。
Cities cool down through infrastructure: parks and street trees for shade, light-coloured and reflective roofs to cut heat absorption, green and blue spaces (water bodies) for evaporative cooling, and ventilation corridors that channel breezes. These nature-based measures use less energy than air conditioning and also absorb rainwater and improve livability.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
Akbari、Pomerantz 与 Taha,《Cool surfaces and shade trees to reduce energy use and improve air quality in urban areas》,Solar Energy,2001 (DOI: 10.1016/s0038-092x(00)00089-x)
H. Akbari, M. Pomerantz & H. Taha, 'Cool surfaces and shade trees to reduce energy use and improve air quality in urban areas', Solar Energy, 2001, DOI: 10.1016/s0038-092x(00)00089-x
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1016/s0038-092x(00)00089-x
#城市热岛 #降温基础设施 #基于自然
海平面上升主要由哪些因素驱动？
What mainly drives sea level rise?
海平面上升主要有两大原因：海水受热膨胀，以及陆地冰川和冰盖融化向海洋注入水量。此外，地下水抽取后排入海洋也有贡献。过去一个世纪全球海平面已上升约20厘米，且速度在加快。
Sea level rise is driven mainly by two factors: thermal expansion of warming seawater and the addition of water from melting land ice such as glaciers and ice sheets. Groundwater extraction that eventually reaches the ocean also contributes. Global mean sea level has risen about 20 centimeters over the last century and is accelerating.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#海平面 #热膨胀 #冰盖
沿海城市如何适应海平面上升？
How can coastal cities adapt to sea-level rise?
策略沿“防护—适应—迁移”梯度展开：建设软硬结合的海岸（海堤加红树林或盐沼缓冲带）、抬升建筑和关键设施标高、划定撤退线并规划有序搬迁，同时恢复湿地作为天然缓冲。风险地图和预警系统帮助社区提前应对，许多城市把适应纳入土地利用规划，避免在高风险区继续扩张。
Strategies span a protect–adapt–retreat spectrum: hybrid coasts (seawalls plus mangrove or saltmarsh buffers), elevating buildings and critical infrastructure, zoning retreat lines with planned relocation, and restoring wetlands as natural buffers. Risk maps and early-warning systems prepare communities, and many cities embed adaptation into land-use planning to avoid expanding in high-risk zones.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
UNDRR 2017《如何让城市更有韧性：地方政府领导手册》
UNDRR (2017) How to Make Cities More Resilient: A Handbook for Local Government Leaders
#海平面上升 #海岸适应 #撤退迁移
北极海冰减少会对天气产生什么影响？
What weather effects can reduced Arctic sea ice cause?
海冰减少削弱反照率并加热北极，可能扰动急流使中纬度天气更易卡住，导致持续高温、寒潮或干旱。这种遥相关机制仍有研究争议，但观测与模拟都提示联系在增强。
Less sea ice lowers albedo and warms the Arctic, potentially disturbing the jet stream so mid-latitude weather gets stuck, causing persistent heat, cold snaps, or drought. This teleconnection is debated, but observations and models both suggest the link is strengthening.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#海冰 #急流 #天气
《巴黎协定》设定的核心温控目标是什么？
What is the core temperature goal set by the Paris Agreement?
《巴黎协定》于2015年通过，核心目标是将全球平均升温控制在较工业化前水平“远低于2℃”，并努力限制在1.5℃以内。各国通过提交并定期更新“国家自主贡献（NDC）”来逐步实现这一目标，协定于2016年生效。
Adopted in 2015, the Paris Agreement aims to hold the global average temperature rise well below 2°C above pre-industrial levels and to pursue efforts to limit it to 1.5°C. Countries work toward this through nationally determined contributions (NDCs) that they submit and periodically strengthen; the agreement entered into force in 2016.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
《联合国气候变化框架公约》（UNFCCC）《巴黎协定》（2015）
United Nations Framework Convention on Climate Change (UNFCCC), Paris Agreement (2015)
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL45467759W：United Nations Framewo
#巴黎协定 #1.5℃ #国家自主贡献 #工业化前 #2015
拉尼娜现象和厄尔尼诺有什么不同？
How does La Niña differ from El Niño?
二者同属厄尔尼诺—南方涛动（ENSO）。厄尔尼诺时赤道东太平洋异常偏暖，拉尼娜则异常偏冷，两者对全球降雨、台风和气温的影响几乎相反。
Both are phases of the El Niño–Southern Oscillation (ENSO). El Niño brings unusual warming of the eastern equatorial Pacific, while La Niña brings unusual cooling, and their effects on global rainfall, storms, and temperature are nearly opposite.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#拉尼娜 #ENSO #涛动
极端天气事件与气候变化有什么科学联系？
What is the scientific link between extreme weather and climate change?
气候变化并未制造天气，但通过改变大气能量与水汽抬高了某些极端事件的概率和强度。例如热浪更频繁、强降水更集中、沿海风暴潮叠加更高海平面。归因科学已能对单个事件量化其人为贡献。
Climate change does not create weather, but by shifting atmospheric energy and moisture it raises the likelihood and intensity of some extremes. Examples are more frequent heatwaves, concentrated heavy rainfall, and coastal storms riding higher seas. Attribution science can now quantify the human contribution to individual events.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#极端天气 #归因 #气候变化
气候变化会如何改变全球干旱格局？
How does climate change alter global drought patterns?
变暖加剧蒸发并使某些地区降水减少、土壤变干，导致气象与农业干旱更频繁。同时干旱区扩张可能使副热带陆地更干燥。这会威胁粮食安全与水供应。
Warming boosts evaporation and reduces rainfall in some regions, drying soils and making meteorological and agricultural droughts more frequent. Dryland expansion may also parch subtropical lands further. This threatens food security and water supply.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#干旱 #气候变化 #水资源
为什么甲烷的增温潜势比二氧化碳高得多？
Why is methane's warming potential much higher than carbon dioxide's?
甲烷分子吸收红外辐射的效率远高于CO2，因此在分子层面增温能力极强。但它的寿命只有约12年，远短于CO2的百年以上，所以长期累积效应较小。在100年尺度上，甲烷的增温潜势约为CO2的28到36倍。
Methane absorbs infrared radiation far more efficiently per molecule than CO2, making it extremely potent at the molecular level. But it lasts only about 12 years in the atmosphere, much shorter than CO2's centuries, so its cumulative long-term effect is smaller. Over 100 years, methane's warming potential is roughly 28 to 36 times that of CO2.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#甲烷 #增温潜势 #温室气体
什么是碳足迹？
What is a carbon footprint?
碳足迹是指一个人、产品或活动在整个生命周期中直接或间接排放的温室气体总量，通常用二氧化碳当量表示。乘坐飞机、用电和吃肉都会留下碳足迹。减少碳足迹可以通过节电、使用公共交通和选择本地食物来实现。
A carbon footprint is the total greenhouse gas emissions, directly and indirectly, caused by a person, product, or activity over its life cycle, usually expressed in carbon dioxide equivalents. Flying, using electricity, and eating meat all leave a footprint. Reducing it can involve saving energy, using public transport, and choosing local food.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#碳足迹 #排放 #生活方式
什么是气候“损失与损害”？它和“适应”有何区别？
What is climate loss and damage, and how does it differ from adaptation?
损失与损害指气候变化造成的、即使适应也无法避免或弥补的损失，例如海平面上升使家园永久淹没、冰川消融导致水源减少。它与适应不同：适应是降低未来风险，损失与损害关注已经发生或不可避免的损害，并涉及为其提供资金支持，比如国际社会设立的“损失与损害基金”。
Loss and damage refers to climate harms that adaptation cannot avoid or offset, such as homes permanently submerged by sea-level rise or water supply reduced by melting glaciers. Unlike adaptation, which reduces future risk, loss and damage addresses harm already occurring or unavoidable, and involves financial support — such as the international Loss and Damage Fund.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#损失与损害 #气候基金 #适应
农业如何适应气候变化？
How can agriculture adapt to climate change?
农业适应包括选育耐热耐旱品种、调整播种期、节水灌溉、间作与覆盖作物保墒，以及改良土壤以增强保水性。这些措施能提高产量稳定性、降低极端天气损失，而且许多措施同时具有减排和固碳效果，属于“适应与减缓协同”。
Agricultural adaptation includes heat- and drought-tolerant varieties, adjusted planting dates, water-saving irrigation, intercropping and cover crops for moisture, and soil improvement for better water retention. These measures stabilise yields and cut losses from extreme weather, and many also reduce emissions and store carbon — adaptation-mitigation synergies.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#气候适应 #农业韧性 #节水灌溉
科学家怎样判断一座冰川是在健康增长还是在持续亏损？
How do scientists judge whether a glacier is healthy or in sustained deficit?
关键指标是年度质量平衡：把冬季积累的雪冰量减去夏季消融量，正值代表增长，负值代表亏损。观测者还会追踪平衡线高度，即积累区与消融区的分界；这条线持续上移意味着可供补给的高海拔区域在缩小。世界冰川监测服务处的参照冰川序列显示，全球冰川已连续三十多年出现负质量平衡。
The key measure is annual mass balance: winter snow and ice accumulation minus summer melt, positive for growth and negative for loss. Observers also track the equilibrium line altitude, the boundary between accumulation and ablation zones; a line that keeps rising means the high-elevation area able to feed the glacier is shrinking. The reference-glacier series maintained by the World Glacier Monitoring Service shows more than three consecutive decades of negative balance worldwide.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#冰川质量平衡 #平衡线高度 #冰川监测
全球变暖和气候变化有什么不同？
How does global warming differ from climate change?
全球变暖特指地球平均气温持续上升这一现象，而气候变化是更宽泛的概念，包含气温升高以及由此引发的海平面上升、降水格局改变、极端天气频发等一系列变化。可以说全球变暖是气候变化的核心表现之一。两者常被一起讨论，但范围并不相同。
Global warming specifically refers to the ongoing rise in Earth's average temperature, while climate change is the broader concept covering warming plus resulting shifts like sea-level rise, altered rainfall, and more extreme weather. Global warming is thus one core aspect of climate change. The two are related but not identical in scope.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#全球变暖 #气候变化 #区别
什么是“辐射强迫”，IPCC 如何用它衡量人类活动对气候的影响？
What is radiative forcing, and how does the IPCC use it to gauge human influence on climate?
辐射强迫指相对于工业化前，某种因素导致地球能量收支在大气层顶净改变的功率密度，单位为瓦/平方米（W/m²），正值表示使地球增暖。IPCC 用它量化不同驱动因子（如温室气体、气溶胶、太阳活动）的贡献，指出人类活动造成的净正辐射强迫是近百年全球变暖的主要成因。
Radiative forcing is the change in net energy flux at the top of the atmosphere caused by some factor relative to pre-industrial conditions, expressed in watts per square meter (W/m²); positive values warm the planet. The IPCC uses it to quantify the contributions of different drivers—such as greenhouse gases, aerosols, and solar activity—and attributes the net positive forcing from human activity as the main cause of recent global warming.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#辐射强迫 #能量收支 #瓦每平方米 #气溶胶 #全球变暖
总太阳辐照度（TSI）如何测量？为何它不足以解释近几十年的变暖？
How is the Total Solar Irradiance (TSI) measured, and why is it insufficient to explain recent warming?
TSI 由卫星辐射计（如 SORCE、TIM）连续监测，近几十年变化不足 0.1%。而同期地表升温约 1.1°C，且夜间与高纬增温更明显，这与太阳驱动的模式不符，指向温室气体的作用。
TSI is monitored continuously by satellite radiometers such as SORCE/TIM, varying by less than 0.1% over recent decades. Meanwhile surface warming of about 1.1°C, stronger at night and high latitudes, contradicts a solar-driven pattern and points to greenhouse gases.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#太阳辐照度 #气候驱动 #温室效应
海水热膨胀为何会导致海平面上升？
Why does thermal expansion of seawater raise sea level?
水受热后密度下降、体积增大，即使总水量不变，海洋也会因变暖而膨胀抬高海平面。由于海洋极深且储热巨大，热膨胀是20世纪海平面上升的最大单一贡献者。它的影响还会在热量向深海传播的过程中持续数十到上百年。
When water warms it becomes less dense and expands in volume, so the ocean rises even without added water. Because the ocean is deep and stores enormous heat, thermal expansion was the largest single contributor to 20th-century sea level rise. Its effect persists for decades to centuries as heat penetrates the deep ocean.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#热膨胀 #海平面 #海洋变暖
黑碳沉降削弱冰雪反照率的机制,为何被排在北极放大型变暖归因中紧随温室气体的关键位置?
Within attribution of amplified Arctic warming, why does the mechanism of black carbon dimming snow and ice rank immediately behind greenhouse gases in importance?
黑碳是含碳燃料不完全燃烧产生的强吸光颗粒,沉降到雪冰表面即把高反射界面改造成吸热界面,融雪提前又裸露出颜色更深的海冰与冻土,正反馈逐级放大。北极监测与评估计划的量化结果显示,其对春季增暖的辐射强迫贡献可与甲烷比肩,而黑碳在大气中仅存留数天到数周,削减排放后几年内便能转化为降温收益,因而成为北极理事会的优先管控行动。
Black carbon, born of incomplete combustion, converts highly reflective snow and ice surfaces into heat absorbers upon deposition; accelerated melt then exposes darker sea ice and tundra, compounding the feedback level by level. Quantifications by the Arctic Monitoring and Assessment Programme place its radiative forcing on springtime warming on par with methane, and because the aerosol persists only days to weeks aloft, emission curbs convert into cooling benefits within several years, making it a priority action item for the Arctic Council.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：此条未指向带版次的可引用著作（通识性内容、机构文件或未展开的英文书名），本库不提供独立书目出处；如需精确引用，需由编辑补全具体篇目与版次。
北极监测与评估计划(AMAP)关于黑碳与臭氧作为北极气候强迫因子的评估报告 ; 另见: Arctic Monitoring and Assessment Programme, AMAP Assessment 2015: Black Carbon and Ozone as Arctic Climate Forcers
Arctic Monitoring and Assessment Programme, AMAP Assessment 2015: Black Carbon and Ozone as Arctic Climate Forcers ; see also: 北极监测与评估计划(AMAP)关于黑碳与臭氧作为北极气候强迫因子的评估报告
#极地环境 #黑碳沉降
温室效应是坏事吗?没有它地球会怎样?
Is the greenhouse effect bad? What if Earth had none?
温室效应本身是大功臣:二氧化碳等气体像毯子裹住地球,没有它,平均气温会是零下18度,海洋也会结冰。问题是人类烧煤烧油排出太多二氧化碳,毯子越盖越厚,地球开始发低烧,一年比一年热。我们要做的不是扔掉毯子,而是别再把它加厚。
The greenhouse effect is a hero: gases like CO2 wrap Earth in a blanket; without it the average temperature would be minus eighteen Celsius and the oceans would freeze. The trouble is people burn coal and oil, thickening the blanket and giving Earth a slow fever that climbs year by year. Keep the blanket; stop thickening it.
难度 进阶 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-10-03 · 2 条独立证据
来源 · Source
韩启德总主编《十万个为什么》(第六版),少年儿童出版社,2013
Han Qide chief ed., Ten Thousand Whys, 6th edition, Juvenile and Children Publishing House, 2013, 6th ed., Juvenile and Children Publishing House, 2013
独立核验依据 · Independent verification: 核验依据 1 ISBN 978-7-5324-9328-9 · 核验依据 2 ISBN 9787532493289
#温室效应 #二氧化碳 #全球变暖
为什么全球变暖1.5度听起来不多,科学家却如此紧张?
Why do scientists panic over just 1.5 degrees of warming?
这是全球平均值——就像人的体温从36.5度升到38度,平均只涨1.5度却意味着大病。气候系统里,平均值小幅变化会放大成极端事件剧变:热浪频率翻倍、暴雨更强、海面上升淹没低洼岛国、珊瑚礁九成白化。2015年巴黎协定把1.5度写为努力目标,因为超过这个线,部分变化将不可逆转。
That figure is a global average — like body temperature climbing 36.5 to 38, a small mean change meaning serious illness. Climate systems amplify small averages into extreme swings: doubled heat waves, fiercer storms, island-drowning seas, ninety percent coral bleaching. The Paris Agreement set 1.5 degrees because beyond it some changes turn irreversible.
难度 进阶 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#巴黎协定 #临界点 #极端天气
什么是气候变化？
What is climate change?
气候变化指地球长期的气候状态（如温度、降水）发生显著改变，既包括自然的缓慢变化，也指近百年因人类活动而加速的变暖。人类燃烧煤、石油和天然气释放大量二氧化碳是主要原因之一。气候变化会导致冰川融化、极端天气增多等后果。
Climate change refers to significant long-term shifts in Earth's climate, such as temperature and rainfall patterns, including both natural slow changes and the recent human-accelerated warming. Burning coal, oil, and gas that releases CO2 is a leading cause. It leads to melting glaciers and more extreme weather, among other effects.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#气候变化 #全球变暖 #温室气体
全球变暖和天气变冷矛盾吗？
Does cold weather contradict global warming?
不矛盾。全球变暖指长期平均温度的上升，极端寒潮是天气尺度波动，在变暖背景下中高纬度急流更易出现蜿蜒，反而可能把极地冷空气向南输送造成短期严寒。
No. Global warming describes a long-term rise in average temperature, while cold snaps are short-term weather variability. A warming Arctic can weaken the jet stream, letting polar air plunge southward and cause severe but brief cold spells.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#天气 #平均温度
北极永久冻土融化会释放什么？
What does thawing Arctic permafrost release?
永久冻土是常年冻结的土壤，封存着大量动植物残体形式的有机碳。融化后微生物分解这些有机物，释放CO2和甲烷。它可能形成自我强化的正反馈，加速全球变暖。
Permafrost is soil frozen year-round that stores vast organic carbon from dead plants and animals. As it thaws, microbes decompose that matter, releasing CO2 and methane. This can create a self-reinforcing feedback that accelerates warming.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#永久冻土 #碳释放 #正反馈
甲烷为什么比二氧化碳更'强'但更'短命'？
Why is methane stronger but shorter-lived than CO2?
单位质量甲烷在20年尺度的增温潜势约为CO2的80余倍，因其红外吸收能力强；但它大气寿命仅约12年，会被羟基自由基氧化分解，而CO2可存留数百年，所以两者在气候策略中需区别对待。
Per unit mass, methane's 20-year warming potential is over 80 times that of CO2 because it absorbs infrared strongly; but its atmospheric lifetime is only about 12 years, broken down by hydroxyl radicals, whereas CO2 persists for centuries—so the two need distinct policy treatment.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#甲烷 #增温潜势
冰川退缩会如何影响水资源？
How does glacier retreat affect water resources?
高山冰川是许多河流的固体水库，融水支撑旱季流量与数十亿人的饮水灌溉。冰川退缩初期可能增加径流，但长期萎缩将导致旱季供水锐减。依赖冰川的地区面临水资源不安全。
Mountain glaciers act as solid reservoirs, with melt supporting dry-season flow and the water supply for billions. Early retreat may increase runoff, but long-term shrinkage will sharply reduce dry-season supply. Glacier-dependent regions face growing water insecurity.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#冰川 #水资源 #退缩
目前大气中二氧化碳浓度大约是多少？
About how high is atmospheric carbon dioxide concentration now?
截至近年，大气CO2浓度已突破420ppm，远高于工业化前约280ppm的水平。这是至少80万年来未有的高浓度。持续上升的浓度是全球变暖最直接的信号之一。
In recent years atmospheric CO2 has exceeded 420 ppm, far above the preindustrial level of about 280 ppm. This is the highest concentration in at least 800,000 years. Its continued rise is among the clearest signals of global warming.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#二氧化碳 #浓度 #监测
海平面为什么会上升？
Why is sea level rising?
海平面上升主要有两个原因：一是全球变暖使海水受热膨胀，二是冰川和冰盖融化把更多水注入海洋。上升的海水会淹没沿海低地、侵蚀海岸并加剧风暴潮的破坏。许多岛国和沿海城市因此面临严重威胁。
Sea level rises mainly for two reasons: warming oceans expand the water, and melting glaciers and ice sheets add more water to the sea. Higher seas flood low-lying coasts, erode shorelines, and worsen storm surges. Many island nations and coastal cities face serious threats as a result.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#海平面 #冰川 #沿海
大气中主要的温室气体有哪些？
What are the main greenhouse gases in the atmosphere?
主要温室气体包括水蒸气、二氧化碳(CO2)、甲烷(CH4)、氧化亚氮(N2O)和多种人造含氟气体。其中二氧化碳因排放量大、存留时间长，是对现代变暖贡献最大的气体。甲烷的单位增温能力虽强，但在大气中存留时间较短。
The main greenhouse gases are water vapor, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and various human-made fluorinated gases. Carbon dioxide contributes most to modern warming because of its large emissions and long lifetime. Methane is far more potent per molecule but lingers in the atmosphere for a much shorter time.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#温室气体 #二氧化碳 #甲烷
《巴黎协定》的目标是什么？
What is the goal of the Paris Agreement?
《巴黎协定》是2015年通过的全球气候条约，目标是把本世纪全球升温控制在远低于2℃，并努力限制在1.5℃以内。各国自主提出减排计划，并定期汇报进展。它是目前国际社会应对气候变化最重要的合作框架。
The Paris Agreement, adopted in 2015, aims to keep global warming well below 2°C this century and pursue efforts to limit it to 1.5°C. Countries submit their own emission-reduction plans and report progress regularly. It is the central international framework for climate action today.
难度 入门 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
《巴黎协定》公开文本
Paris Agreement public text
#巴黎协定 #减排 #国际合作
温室效应是如何让地球变暖的？
How does the greenhouse effect warm the Earth?
太阳短波辐射穿过大气到达地表，地表吸收后以长波（红外）辐射向外释放热量。二氧化碳、甲烷等温室气体能吸收并重新辐射这部分红外辐射，使热量滞留在低层大气中，从而抬升全球平均温度。
Solar shortwave radiation passes through the atmosphere and warms the surface, which then emits heat as long-wave infrared radiation. Greenhouse gases like CO2 and methane absorb and re-emit that infrared, trapping heat in the lower atmosphere and raising the global mean temperature.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#温室效应 #辐射平衡
什么是热浪？为什么它很危险？
What is a heat wave and why is it dangerous?
热浪是指连续多日异常炎热、超出当地正常水平的天气。它会让老人和病人中暑甚至死亡，还会让农作物枯萎、用电量猛增。
A heat wave is a stretch of unusually hot days well above a place's normal levels. It can cause heatstroke and death in the elderly and sick, wither crops, and spike electricity use.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#热浪 #高温 #健康风险
“天气”和“气候”的根本区别是什么？
What is the fundamental difference between weather and climate?
天气是某一地点在短时间（分钟到数周）内的大气状态，包括温度、降水、风等具体瞬时状况；气候则是某一地区在较长时期（通常30年及以上）内天气的统计平均与变率。常言“气候是你所预期、天气是你所经历”，正说明了二者在时间尺度上的差异。
Weather is the state of the atmosphere at a specific place over a short time (minutes to weeks), including instantaneous conditions like temperature, precipitation, and wind. Climate is the long-term statistical average and variability of weather for a region, typically assessed over 30 years or more. As the saying goes, 'climate is what you expect, weather is what you get.'
难度 入门 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
世界气象组织（WMO）《国际气象词汇》（WMO-No. 182）天气与气候定义；美国国家海洋和大气管理局（NOAA）
World Meteorological Organization (WMO), 'International Meteorological Vocabulary' (WMO-No. 182); U.S. National Oceanic and Atmospheric Administration (NOAA)
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL18238905W：International meteorol
#天气 #气候 #时间尺度 #统计平均 #变率
什么是“温室效应”，它为什么对地球生命很重要？
What is the greenhouse effect, and why is it important for life on Earth?
温室效应指大气中的某些气体（如二氧化碳、水蒸气、甲烷）吸收并重新辐射地表向外散发的红外热辐射，使地球表面比没有大气时更温暖。若没有自然温室效应，地球平均地表温度约为-18℃，而非适宜生命的约15℃，因此适度的温室效应是维持地表液态水和生命的必要条件。
The greenhouse effect occurs when certain atmospheric gases—such as carbon dioxide, water vapor, and methane—absorb and re-radiate the infrared heat that Earth's surface emits outward, keeping the surface warmer than it would be without an atmosphere. Without the natural greenhouse effect, the average surface temperature would be about -18°C instead of the habitable ~15°C, so a moderate greenhouse effect is essential for liquid water and life.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#温室效应 #温室气体 #红外辐射 #地表温度 #生命
为什么北极比地球其他地方暖得更快？
Why is the Arctic warming faster than the rest of the Earth?
北极放大效应让北极升温速度达到全球平均的三到四倍。冰雪融化后露出颜色更深的海面，吸收更多阳光，使温度进一步上升。
Arctic amplification makes the Arctic warm about three to four times faster than the global average. As ice and snow melt, darker ocean surfaces are exposed and absorb more sunlight, driving further warming.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
IPCC AR6 第一工作组报告,Cambridge University Press,2021
IPCC AR6 WG1, Climate Change 2021: The Physical Science Basis, CUP, 2021
#北极放大 #海冰反照率 #气候变暖
冰川也会「流泪」吗?冰塔林和冰川表面的蓝色湖泊是怎么回事?
Do glaciers weep? Where do ice seracs and those blue ponds on glacier surfaces come from?
消融区的冰川像一条缓慢流动的河流:上游堆积带降雪压实成冰,下游因气温升高而质量亏损。强烈的地形起伏把冰面撕成锯齿状冰塔林(喜马拉雅常见);夏季融水在低洼冰面汇成蓝绿色的冰面湖——颜色来自悬浮的细岩粉对光的散射。这些湖泊是危险信号:冰碛湖被松散终碛垄拦着,一旦垮坝即爆发洪水,喜马拉雅与安第斯已多次成灾。卫星监测显示全球山地冰川近几十年普遍退缩,成为海平面上升与下游干旱区供水焦虑的双重来源。
Ablation-zone glaciers flow like slow rivers: snow compacts to ice in the upper accumulation zone while downstream losses outpace gains. Rugged relief tears ice surfaces into sawtooth serac forests, common in the Himalaya; summer meltwater pools into blue-green supraglacial lakes tinted by suspended rock flour. These lakes are warning lights — dammed by loose moraine, they burst as glacial lake outburst floods that have repeatedly struck the Himalaya and Andes. Satellites show mountain glaciers retreating worldwide, feeding both sea-level rise and drought anxiety in downstream valleys.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
Immerzeel 等,《Climate change will affect Asian water towers》,Science 第328卷,2010
W. W. Immerzeel et al., Climate change will affect Asian water towers, Science 328, 2010
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.17491/58660-90280-1：Climate Change will A
#冰川消融 #冰面湖 #冰湖溃决