Impacts of the Madden–Julian Oscillation on the Summer South China Sea Ocean Circulation and Temperature
Impacts of the Madden–Julian Oscillation on the Summer South China Sea Ocean Circulation and Temperature
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DOI：
10.1175/jcli-d-12-00796.1
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发表时间：
2013-10
影响因子：
4.9
通讯作者：
Guihua Wang;Zheng Ling;R. Wu;Changlin Chen
中科院分区：
文献类型：
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作者：
Guihua Wang;Zheng Ling;R. Wu;Changlin Chen
本文利用Sverdrup理论模式、1.5层简化重力模式和区域海洋模式[区域海洋模式系统（ROMS）]，研究了夏季Madden-Julian振荡（MJO）对南海（SCS）的影响。结果表明，南海海洋环流对MJO有季节内振荡响应。在其西风位相期间，MJO在南海北方（南部）上空产生正（负）风应力旋度，从而在南海北方（南部）诱发增强的气旋（反气旋）环流。这不仅降低了海表温度（SST），但也降低（增加）次表层温度在北方（南部）的南海。在其东风位相，MJO对南海海洋环流和温度的影响基本上是反向的，但影响较弱。因此，MJO可以对南海环流和温度的夏季气候学产生影响。作者的分析进一步表明，MJO“…
AbstractThe present study investigates the impact of the Madden–Julian oscillation (MJO) on the South China Sea (SCS) in summer with three types of models: a theoretical Sverdrup model, a 1.5-layer reduced gravity model, and a regional ocean model [Regional Ocean Modeling System (ROMS)]. Results show that the ocean circulation in the SCS has an intraseasonal oscillation responding to the MJO. During its westerly phase, the MJO produces positive (negative) wind stress curl over the northern (southern) SCS and thus induces an enhanced cyclonic (anticyclonic) circulation in the northern (southern) SCS. This not only cools sea surface temperature (SST) but also decreases (increases) subsurface temperature in the northern (southern) SCS. During its easterly phase, the MJO basically produces a reversed but weaker influence on SCS ocean circulation and temperature. Thus, the MJO can have an imprint on the summer climatology of SCS circulation and temperature. The authors' analysis further indicates that the MJO'...