南海涡致热输送时空变化特征分析  

Characteristic Analysis of Spatio-temporal Variability of Eddy Heat Transports in the South China Sea

作　　者：江伟[1] 孙忠斌[2] 邢博[1] 王静[1] 

机构地区：[1]海军海洋水文气象中心,北京100161 [2]中国海洋大学物理海洋教育部实验室,山东青岛266000

出　　处：《海洋测绘》2016年第4期35-38,共4页Hydrographic Surveying and Charting

摘　　要：利用11年高分辨率的(OGCM for the Earth Simulator,OFES)模式数据,计算南海涡致热输运(EHT),分析其时空变化特征。并利用卫星高度计数据验证OFES模式模拟南海涡致热输运的可靠性。研究结果表明,南海涡致热输运高值区主要分布在西边界流区,在南海北部和越南东南条带状区域,沿着中尺度涡运动路径,北部条带为向极输运,南部条带为向赤道输运,最大值达到了180MW/m。两高值区中间输运很小,沿着2500m等深线,为涡中心运动路径。南海中部涡致热输运较小。无论暖涡、冷涡,产生的致热输运均为顺时针方向。南海涡致热输运也存在明显的季节和年际变化。越南东南秋季输运最大,春冬季次之,夏季最小;南海北部则是春冬季最大,夏季最小。而在年际上,越南东南在2003、2007、2011年较大,南海北部则在2004、2007、2010年较大。Using high-resolution model data of OGCM for the Earth Simulator （OFES）, we calculate the eddy heat transports（EHT） in the South China Sea（SCS） and analyze the spatio-temporal variability characteristics of EHT.The gridded altimeter products are used to compare with the OFES outputs and validate them.From the research, high value regions of EHT are near the western boundary current regions, existing in the band areas of northern SCS and southeast of Vietnam, along the trace of mesoscale eddies, poleward in the north and equatorward in the south.The maximum value of the EHT reaches 180 MW/m.Between two high value areas, the EHT are quite small,along the 2500m isobath,which is the trace of eddy center.The EHT in the center of SCS is also very small. Both warm and cold EHTs are clockwise. The EHT also present distinct seasonal and interannual variabilities.In the southeast region of Vietnam, the EHT are strongest in autumn, weaker in spring and winter and the weakest in summer. At the same time, the EHT of northern SCS are the strongest in spring and winter and the weakest in Summer.For the interannual variability, large EHT happened in the southeast of Vietnam in 2003,2007 and 2011 ,and in the northern SCS in 2004,2007 and 2010.

关 键 词：南海涡致热输运 时空变化特征 中尺度涡 季节变化 年际变化 

分 类 号：P731[天文地球—海洋科学]