cloud Earth Science

3 个科学问题 · 地球科学 Earth Science

本页目录

为什么云对气候的反馈是科学家最头疼的不确定性之一?

Why is cloud feedback one of the trickiest uncertainties for climate scientists?

云既能反射阳光又能保温,且小到公里尺度难以被气候模型直接算清;变暖后云量、高度、厚度的变化方向不完全确定,会放大或减弱增暖。
Clouds both reflect and trap radiation, yet they occur at scales too small for models to resolve directly; how cloud amount, height, and thickness change as it warms is uncertain, so they may amplify or damp warming.
难度 专业 · 适合 高中(15-18) CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

周淑贞 束炯,《气象学与气候学》第3版,高等教育出版社,1997

Zhou Shuzhen and Shu Jiong, Meteorology and Climatology, 3rd ed., Higher Education Press, 1997

#云反馈 #不确定性

云到底是在给地球降温还是升温?

Do clouds cool or warm the Earth?

两种都有:云把阳光反射回太空会降温,但云也会像毯子一样拦住地面红外辐射而升温;低厚云多半净降温,高空薄云多半净升温。
Both: clouds reflect sunlight (cooling) but also trap outgoing infrared like a blanket (warming). Low thick clouds usually net-cool, while high thin clouds usually net-warm.
难度 进阶 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

周淑贞 束炯,《气象学与气候学》第3版,高等教育出版社,1997

Zhou Shuzhen and Shu Jiong, Meteorology and Climatology, 3rd ed., Higher Education Press, 1997

#云 #反照率

白云在晴天为什么会帮我们挡住一点热?

How do white clouds help shade us on a sunny day?

白云亮亮的,会把一部分太阳光直接弹回天上,地面接收到的阳光变少,所以云底下会凉快一些。
Bright white clouds bounce part of the sunlight back to space, so the ground gets less sun and feels cooler underneath.
难度 入门 · 适合 小学低段(6-8) CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source

卢特根斯、塔巴克《大气:科学导论》,Pearson,2011

Lutgens, F.K. & Tarbuck, E.J., The Atmosphere: An Introduction to Meteorology, Pearson, 2011

#反照 #遮阴