Equatorial upper-ocean dynamics and their interaction with the West African monsoon
Equatorial upper-ocean dynamics and their interaction with the West African monsoon
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DOI：
10.1002/asl.287
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发表时间：
2011-01-01
影响因子：
3
通讯作者：
Marin, Frederic
中科院分区：
文献类型：
--
作者：
Brandt, Peter;Caniaux, Guy;Marin, Frederic
赤道大西洋西部的纬向风异常在北半球冬季末夏初的先决条件北半球夏季冷/暖事件在赤道大西洋东部（EEA），表现在一个强大的年际大西洋冷舌（ACT）的变化。与圣赫勒拿反气旋有关的当地季节内风波动，有助于冷舌开始和强度的变化，特别是在有预处理的浅温跃层的年份。评估了冷舌海表面温度（SST）异常对几内亚湾风场的影响。它有助于向北迁移的湿度和对流，并可能西非季风（WAM）跳。版权所有（C）2010皇家气象学会
Zonal wind anomalies in the western equatorial Atlantic during late boreal winter to early summer precondition boreal summer cold/warm events in the eastern equatorial Atlantic (EEA) that manifest in a strong interannual Atlantic cold tongue (ACT) variability. Local intraseasonal wind fluctuations, linked to the St. Helena anticyclone, contribute to the variability of cold tongue onset and strength, particularly during years with preconditioned shallow thermoclines. The impact of cold tongue sea surface temperature (SST) anomalies on the wind field in the Gulf of Guinea is assessed. It contributes to the northward migration of humidity and convection and possibly the West African monsoon (WAM) jump. Copyright (C) 2010 Royal Meteorological Society