黄海暖流区SST年际变化分析

Analysis of the interannual variation of the SST in the Yellow Sea Warm Current area

基于2003—2019年黄渤海冬季(1月)微波遥感SST,分析其年际变化特征和黄海暖流对SST年际变化的影响,进一步分析黄海暖流流轴摆动与强弱的年际变化。分析结果表明:冬季黄海暖流区SST整体处于上升趋势(0.07℃/a),黄海暖流对黄海中部SST具有一定的稳定作用;该区域SST年际变化是在北太平洋年际震荡背景下,主要受黄海暖流、大陆气候和地表径流等近岸过程影响,黄海暖流流轴年际变化与ENSO显著相关,受纬向风作用明显,而黄海暖流强弱年际变化与经向风关系显著。

Based on the microwave remote sensing SST data over the Yellow Sea and Bohai Sea in winter from 2003 to 2019,this paper analyzes the characteristics and the influence of the Yellow Sea Warm Current on the interannual variation of the SST.Meanwhile,we further analyze the interannual variation of the stream axis and intensity of the Yellow Sea Warm Current.The results show that the SST in the Yellow Sea Warm Current area reveals an increasing trend of 0.07℃/a in winter,and the Yellow Sea Warm Current helps in stabilizing the SST in the middle of the Yellow Sea.The interannual variation of SST in this area is mainly affected by the coastal processes of the Yellow Sea Warm Current,continental climate and river runoff under the background of the Pacific Decadal Oscillation.The interannual variation of the axis of the Yellow Sea Warm Current is closely correlated to ENSO and significantly influenced by meridional winds,while the interannual variation of the intensity of the Yellow Sea Warm Current is significantly affected by zonal winds.