黄海与东海海域底层水温影响因素研究

根据ROMS海洋模式输出的1958—2005年东中国海水文要素数据、美国国家环境预报中心的位势高度场资料,对影响中国东部近海6个代表性区域热含量(代表底温)的因素进行了研究。结果表明:对黄海与东海研究海域底层温度而言,在季节变化上,热量的平流输送抑制了暖流区底层温度的季节变化,扩大了冷流区的季节差异。在年际变化上,离岸海域(特别是黄海中部)的平流热输送作用在春、夏季节较为明显。

Impact Factors of Bottom Temperature in the Yellow Sea and East China Sea

According to marine hydrology data during 1958 to 2005 output from ROMS model and geopotential height data from NCEP,impact factors about heat content(on behalf of bottom temperature) in six standard regions in the Yellow Sea and East China Sea were analyzed in this paper. The result showed that for seasonal variation of bottom temperature,heat transport inhibited bottom temperature change in the warm current region and enhanced bottom temperature change in the cold current region.For annual variation of bottom temperature,the influence of heat transport was significant in spring and summer in offshore waters(especially for center Yellow Sea).