利用NCEP大气环流模式,模拟了亚洲季风区气候对北大西洋正、负海温异常的响应。研究表明:亚洲季风区气候对北大西洋年代际振荡(AMO)的影响存在线性和非线性响应;AMO的暖位相造成欧亚大陆增温以及印度地区北暖南冷的偶极子型分布,主要是线性因素的作用;夏季、秋季印度半岛降雨增多,是线性因素和非线性因素共同作用的结果,且非线性因素带给印度半岛的降水多集中在西部。
Previous studies have revealed that the AMO has significant influences on the global and regional climate. With experiments with the NCEP atmosphereic general circulation model, the Asian mon- soonal climate response to a warming or cooling of the North Atlantic SST anomalies are investigated. The main research achievements are as follows: both linearity and nonlinearity are found in the Asian monsoonal climate response to Atlantic Multidecadal Oscillation. It is showed that the response of warm Eurasia and the dipole of India's surface temperature ,due to the warm AMO, to be rather linear. And the response of more summer rainfall in India are influenced by both linear and nonlinear components; the linearity response bring more water to the west India.