“大湖效应”雪是怎么在湖泊下风岸堆出几米厚的雪的？
How does lake-effect snow pile meters of snow on downwind shores?
寒冷干燥的空气吹过相对温暖开阔的湖面，从湖里捞起大量水汽和热量，上岸后遇冷陆地迅速凝结成窄而强的雪带，所以下风岸会暴雪成灾。
Cold dry air passes over a relatively warm open lake, picking up moisture and heat; on reaching cold land it condenses into narrow intense snowbands, dumping meters of snow on downwind shores.
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
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040060164（豆瓣书目条目: 气象学与气候学）
#大湖效应 #暴雪
一场暴风雪要达到什么标准才叫“blizzard”？
What criteria must a storm meet to be called a blizzard?
通常要求持续大风（如每小时 35 英里以上）、大量吹雪，且能见度降到很低（如不足 0.4 公里）并维持至少三小时，重点在“风+雪+看不清”而不只是下得多。
Typically it needs sustained strong wind (e.g., over 35 mph), blowing snow, and visibility under about 0.4 km lasting at least three hours—emphasis on wind plus snow plus poor visibility, not just heavy snowfall.
难度 进阶 · 适合 初中(12-15)
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
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040060164（豆瓣书目条目: 气象学与气候学）
#暴风雪 #能见度
冬天那种把冷空气从北极“倒灌”下来的现象叫什么？
What is it called when Arctic cold air spills far southward?
常和“极地涡旋”有关。平时绕北极转的冷空气圈被扰动后，裂开的一团寒流就会南下，带来刺骨严寒和暴风雪。
It's often linked to the polar vortex. When the swirl of cold air around the Arctic is disturbed, a lobe breaks off and plunges south, bringing bitter cold and blizzards.
难度 入门 · 适合 幼儿(3-6)
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
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787040060164（豆瓣书目条目: 气象学与气候学）
#极地涡旋 #寒潮