SST intraseasonal oscillation and atmospheric forcing system of the South China Sea |
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Authors: | Gao Rong-zhen Zhou Fa-xiu Fang Wen-dong |
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Institution: | (1) Dept. of Atmospheric Sciences, Ocean University of Qingdao, 266003 Qingdao, China;(2) LED, South China Sea Institute of Oceanology, CAS, 510301 Guangzhou, China |
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Abstract: | This study used National Center for Environmental Prediction (NCEP) reanalysis data to confirm that the variance of sea surface temperature (SST) in the South China Sea (SCS) has pronounced intraseasonal oscillations characterized by quasi standing waves; and was aimed to document how intraseasonal time scale SST formed and developed in the SCS. The results derived from the composite analysis indicated the existence of a local low level atmospheric dynamic forcing system over the SCS. The main formation mechanism of SST intraseasonal oscillation is the low level rotational atmospheric circulation forcing over the SCS on intraseasonal time scales and the solar radiation variations caused by cloud amount changes. |
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Keywords: | SCS SST intraseasonal oscillation low level atmospheric forcing |
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