【摘要】 [目的]研究亚洲夏季风区气候平均季节内振荡扰动动能的结构和传播特征。[方法]从南海季风开始爆发时着手,分析了季风区季节内振荡扰动动能,尤其是对南海季风变化、印度季风发展和东亚季风推进的研究。[结果]亚洲夏季风的发展进程与30~60 d低频振荡的扰动动能活动有密切关系,这种扰动动能从能量的角度解释了季风的爆发、发生发展和终止,并发现阿拉伯海区、孟加拉湾及南海海区的扰动动能最强,尤其是阿拉伯海区,说明阿拉伯海海区即索马里急流是亚洲季风最大的能量源。整个亚洲季风爆发开始的标志是南海季风的突然爆发,而5月中旬南海季风的爆发是菲律宾以东洋面扰动动能西传的结果;东亚季风区扰动动能在夏季存在季节性北推,印度季风区扰动动能高值中心由1个变为2个,分别对应于阿拉伯海和孟加拉湾。[结论]该研究为大气季节内振荡分析提供理论依据。更多还原

【Abstract】 [Objective] The research aimed to study the structure and propagation characteristic of climatological mean kinetic energy of disturbance of in traseasonal oscillation in Asian summer monsoon zone.[Method] When South China Sea monsoon started to break out,the oscillation disturbance kinetic energy in the season in the monsoon zone was analyzed,especially the researches about the variation of South China Sea monsoon,the development of Indian monsoon and the promotion of East Asian monsoon.[Result] The developed process of Asian summer monsoon had the close relationship with 30-60 d disturbance kinetic energy activity with the low-frequency oscillation.The disturbance kinetic energy explained the explosion,occurrence,development and termination of monsoon from the energy angle.It was found that the disturbance kinetic energy in Arabian Sea zone,Bengal Bay and South China Sea area was the strongest,especially in Arabian Sea zone.It illustrated that Arabian Sea zone(Somali jet) was the biggest energy source in Asia.The start mark of monsoon explosion in the whole Asia was the abrupt explosion of South China Sea monsoon.The monsoon explosion in South China Sea in the middle dekad of May was the result of the westward transmission of disturbance kinetic energy on the east sea surface of Philippines.The disturbance kinetic energy in East Asian monsoon zone had the seasonal northward shift in summer.The high value center of disturbance kinetic energy in Indian monsoon zone changed from one to two.They were respectively in Arabian Sea and Bengal Bay.[Conclusion] The research provided the theory basis for analyzing the atmospheric intraseasonal oscillation.更多还原