Impact of the Atlantic Warm Pool on the Summer Climate of the Western Hemisphere
Impact of the Atlantic Warm Pool on the Summer Climate of the Western Hemisphere
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DOI：
10.1175/jcli4304.1
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发表时间：
2006-12
影响因子：
4.9
通讯作者：
Chunzai Wang;Sang‐Ki Lee;D. Enfield
中科院分区：
文献类型：
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作者：
Chunzai Wang;Sang‐Ki Lee;D. Enfield
摘要大西洋暖池（AWP）是一个由墨西哥湾、加勒比海和北大西洋西部热带海域组成的大型暖水体。北大西洋副热带高压（英语：North Atlantic subtropical high，NASH）位于其东北侧，产生热带东风信风。东风信风将北大西洋热带地区的水汽带入加勒比海，在那里气流增强，形成加勒比海低空急流（CLLJ）。然后CLLJ分裂成两个分支：一个转向北上并与大平原低空急流（GPLLJ）连接，另一个继续向西穿越中美洲进入北太平洋东部。东风CLLJ及其向西水汽输送在夏季和冬季最大，而在秋季和春季最小。这是由于NASH向西伸东退导致加勒比海平面气压半年变化的结果。NCAR社区氛围
Abstract The Atlantic warm pool (AWP) is a large body of warm water that comprises the Gulf of Mexico, the Caribbean Sea, and the western tropical North Atlantic. Located to its northeastern side is the North Atlantic subtropical high (NASH), which produces the tropical easterly trade winds. The easterly trade winds carry moisture from the tropical North Atlantic into the Caribbean Sea, where the flow intensifies, forming the Caribbean low-level jet (CLLJ). The CLLJ then splits into two branches: one turning northward and connecting with the Great Plains low-level jet (GPLLJ), and the other continuing westward across Central America into the eastern North Pacific. The easterly CLLJ and its westward moisture transport are maximized in the summer and winter, whereas they are minimized in the fall and spring. This semiannual feature results from the semiannual variation of sea level pressure in the Caribbean region owing to the westward extension and eastward retreat of the NASH. The NCAR Community Atmospher...