沃克环流是什么，它平时怎样在热带太平洋上空转圈？
What is the Walker circulation, and how does it normally loop over the tropical Pacific?
沃克环流是沿赤道太平洋的东西向大气环流：低层信风把暖水往西推，在西太平洋空气上升成云降雨，到东太平洋下沉，再沿低层吹回西边，形成一个闭环。
The Walker circulation is an east-west loop over the tropical Pacific: low-level trade winds push warm water west, air rises and rains in the west, sinks in the east, and returns westward near the surface, closing the loop.
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）
#沃克环流 #信风
热带太平洋两边，一边常下雨一边常干旱，这是为什么？
Why is one side of the tropical Pacific rainy and the other dry?
因为信风把暖水和湿热空气堆在西边，西边空气上升常下雨；东边空气下沉，又干又晴，所以两边天气很不一样。
Trade winds pile warm moist air on the west, where it rises and rains; the east has sinking dry air, so it stays clear—making the two sides very different.
难度 入门 · 适合 小学低段(6-8)
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）
#东西差异 #上升下沉