阿拉伯海东南海域盐度收支的季节变化

doi:10.11978/j.issn.1009-5470.2009.05.066

Abstract

Abstract:

Based on the monthly mean data of Simple Ocean Data Assimilation (SODA) product, the authors analyze the seasonal salinity budget of surface layer in the southeastern Arabian Sea., The salinity variation in the region cannot be explained by surface freshwater flux. The salinity budgets in two typical regions show that horizontal advection dominates salinity variation, decreasing the salinity in winter and increasing it in summer, except for the coastal region off western India where the surface freshwater flux decreases salinity in summer. During winter, the northeast monsoon current advects fresher water from the Bay of Bengal into the Arabian Sea along the same latitude and then transports the low saline-water northward, resulting in salinity reduction in the surface layer of the southeastern Arabian Sea. During summer, southwest monsoon current advects high-salinity water in the northwestern Arabian Sea southeastward, increasing the salinity in the surface layer of the southeastern Arabian Sea. In the southeastern Arabian Sea, salinity variation of the surface layer is prominently stronger in winter than in summer.

Key words: southeastern Arabian Sea, salinity budget, seasonal variation, freshwater flux, horizontal advection

ZHANG Yu-hong,XU Hai-ming,DU Yan,WANG Dong-xiao. Seasonal variability of salinity budget in the southeastern Arabian Sea[J].Journal of Tropical Oceanography, 2009, 28(5): 66-74.

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Seasonal variability of salinity budget in the southeastern Arabian Sea

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