Winter eddy genesis in the eastern south china sea due to orographic wind jets
Winter eddy genesis in the eastern south china sea due to orographic wind jets
复制标题
地形风急流导致南海东部冬季涡流形成
DOI：
10.1175/2007jpo3868.1
复制
发表时间：
2008-03-01
影响因子：
3.5
通讯作者：
Su, Jilan
中科院分区：
文献类型：
--
作者：
Wang, Guihua;Chen, Dake;Su, Jilan
摘要利用简化重力模式研究了1999年8月至2002年7月冬季南海东部中尺度涡旋的产生。结果表明，与东北冬季风有关的地形风急流和南海东部边界沿着山地岛链的间隙，可以在南海上空产生气旋性和反气旋性涡旋。结果表明，直接风强迫可能是一个重要的生成机制，在南海丰富的涡动活动，模拟这种机制，风强迫的分辨率必须足够高，以解决本地风急流地形效应。
Abstract Generation of mesoscale eddies in the eastern South China Sea (SCS) in winters during August 1999 to July 2002 is studied with a reduced-gravity model. It is found that the orographic wind jets associated with the northeast winter monsoon and the gaps in the mountainous island chain along the eastern boundary of the SCS can spin up cyclonic and anticyclonic eddies over the SCS. Results suggest that direct wind forcing could be an important generation mechanism for the rich eddy activity in the SCS, and that to simulate this mechanism the resolution of the wind forcing has to be high enough to resolve the local wind jets induced by orographic effects.