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大气对外强迫低频遥响应的数值模拟 II:对欧亚中高纬“寒潮”异常的响应
引用本文:李崇银,肖子牛.大气对外强迫低频遥响应的数值模拟 II:对欧亚中高纬“寒潮”异常的响应[J].大气科学,1993,17(5):523-531.
作者姓名:李崇银  肖子牛
作者单位:LASG中国科学院大气物理研究所 北京 100080,LASG中国科学院大气物理研究所 北京 100080
摘    要:本文通过用IAP GCM所作的数值模拟研究了欧亚大陆中高纬度地区的外强迫在全球大气中激发的响应.结果清楚表明,同赤道地区的热源强迫一样,中高纬度地区的外强迫也可以在全球大气中产生低频遥响应;通过低频波列EAP,欧亚大陆中高纬度地区的寒潮异常可以对赤道中西太平洋地区的大气运动及全球大气环流有重要影响.对30—60天振荡的强迫激发来讲,地球大气的气候基本态是极为重要的,热带大气对于全球大气的低频振荡活动具有尤为突出的作用.

关 键 词:外强迫    寒潮    低频遥响应    气候基本态

Numerical Simulation of the Atmospheric Low Frequency Teleresponseto the External Forcing, II: Response to the Anomalous "ColdWave" over the Middle-high Latitude Eurasian Area
Li Chongyin and Xiao Ziniu.Numerical Simulation of the Atmospheric Low Frequency Teleresponseto the External Forcing, II: Response to the Anomalous "ColdWave" over the Middle-high Latitude Eurasian Area[J].Chinese Journal of Atmospheric Sciences,1993,17(5):523-531.
Authors:Li Chongyin and Xiao Ziniu
Abstract:Through the numerical simulation by the IAP GCM, the atmospheric teleresponse caused by the external forcing over the Eurasian Continent middle-high latitude area is studied. It is revealed clearly that the external forcing in the middle-high latitude area can also bring about the low-frequency teleresponse in the global atmosphere as that excited by the tropical forcing; By the low-frequency EAP wave-train, the anomalous "cold wave" over the moddle-high latitude Eurasian Continent significantly affects the motion of the atmosphere in the equatorial center-western Pacific area and the global atmospheric general circulation. It is also indicated that the basic climatic state of the atmosphere is extremely important to stimulating the forcing of the 30- 60 day oscillation. The tropical atmosphere exerts especially important influence on the low-frequency oscillation in the global atmosphere.
Keywords:External forcing  Cold wave  Teleresponse  Basic climatic state  
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