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应用全球气候模式就西太平洋暖池区冬季海温异常对冬季大气环流及东亚冬季风的影响问题进行了数值试验.结果表明;西太平洋暖池区海温异常可以引起太平洋中东部Walker环流加强并使其位置东移.同时,增温区附近两半球的Hadley环流也明显增强,增温区附近的上升运动及副热带地区的下沉运动均更加明显。在反常加热区附近有自热带向中高纬度传播的波列出现,从而把海温变化的影响传播到全球。西太平洋暖池区海温异常对副热带高压、西风急流、西风带槽脊强度及位置分布均有重大影响,并造成全球高度场、温度及风场的变化,它使增温区两侧的副热带高压加强并向极地一侧移动,促使西风急流加强并北移,使东亚大槽北缩,并增大高纬与热带之间的热力差异。暧池区海温的异常升高使东亚冬季风减弱,我国大部分地区增暖.
Applying the global climate model, numerical experiments were conducted on the effects of the winter SSTA over the western Pacific warm pool on the winter general circulation and the East Asian winter monsoon. The results show that the anomalous SSTA in the western Pacific warm pool can cause the Walker circulation in the central and eastern Pacific to strengthen and move its position eastward. At the same time, the Hadley circulation in the two hemispheres near the warming area also increased obviously, and the ascending movement near the warming area and the sinking movement in the subtropical area were all more obvious. In the vicinity of the abnormal heating zone there is a wave train that propagates from the tropics to the middle and high latitudes, thus spreading the influence of the variation of SST into the world. The temperature anomaly in the western Pacific warm pool area has a significant impact on the intensity and location distribution of the subtropical high, westerly jet stream and westerly groove ridges. It also causes the changes of the global geopotential height, temperature and wind field. It makes the subtropical high The intensification of the high pressure and the move to the polar side have prompted the westerly jet stream to strengthen and move northward, causing the North East Asian trough to contract northward and increasing the thermal differences between the high latitudes and the tropics. The abnormal rise of sea temperature in the warm pool area weakens the winter monsoon in East Asia, warming most of China.