TITLE

Numerical simulation of the structure and variation of upwelling off the east coast of Hainan Island using QuikSCAT winds

AUTHOR(S)
Li, Yineng; Peng, Shiqiu; Yang, Wei; Wang, Dongxiao
PUB. DATE
November 2012
SOURCE
Chinese Journal of Oceanology & Limnology;Nov2012, Vol. 30 Issue 6, p1068
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The spatial structure and variation of the upwelling in the waters east and northeast of Hainan Island, China during 2000-2007 were investigated using a nested high-resolution Princeton Ocean Model (POM) forced by QuikSCAT winds. The model produced good simulations of the summer upwelling and the seasonal and annual variability. Strong upwelling occurs from mid-July to mid-August with a peak east of Hainan Island associated with the southwesterly monsoon in the South China Sea. Sensitivity experiments indicated that when the local wind stress controls the variability of the upwelling, the large-scale circulation significantly enhances the upwelling northeast of Hainan Island by inducing a local upwelling and transporting cold water northeast-ward along the island's east coast. The joint effects of the local wind stress and large-scale circulation result in stronger upwelling northeast of Hainan Island. This implies that the annual variation of the upwelling northeast of Hainan Island is controlled not only by the local alongshore wind stress but also by the large-scale circulation. This result will help us investigate the decadal variation of the upwelling in this region in the future.
ACCESSION #
83481481

 

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