西南印度洋海温异常影响亚洲夏季风爆发的数值试验

Numerical Simulation of South-West Indian Ocean SSVTA Influence on Outbreak of Asian Summer Monsoon

利用中国科学院大气物理研究所的 9层大气环流模式 ( IAP9- AGCM )作了西南印度洋海温月异常对亚洲夏季风爆发影响的数值试验。试验结果表明 ,当该海域 1～ 3月份的海温出现异常增暖时 ,印度夏季风和东亚夏季风的爆发均较平常晚 ,反之 ,二者的建立均较平常早 ;该海域 1～

By use of IAP9 AGCMⅡ, a numerical experiment is made, in which the influence of the south west Indian Ocean SSTA on the outbreak of the Asian summer monsoon has been discussed. The results indicate that with the warm SSTVA forcing during Jan. to Mar., the Indian and East Asian summer monsoon will break out later and withdraw earlier than usual, otherwise it will break out earlier and withdraw later. So the SSTA over the area during Jan. to Mar. has distinct influence on the precipitation of Asian monsoon region.