摘要
本文利用1979年的FGGEⅢ_b资料研究了1—7月平流层大气环流的季节变化以及变化期间南北半球、东西半球的不同演变特征。分析指出:全球大气环流的季节变化是相互关联的。南半球平流层低纬度强东风的消失和北半球低纬度强东风的建立是同时发生的。北半球平流层从冬到夏极夜急流的消失和南半球平流层从夏到冬极夜急流的建立也是同时发生的。在平流层里,南半球的任一季节变化都与北半球的变化相联系。假定大气环流季节变化最早和最晚的地区分别代表季节变化的启动区和结束区,则南北半球平流层高纬度是启动区,南半球是主要的启动区,北半球中纬度为结束区;对北半球而言,高低纬度地区是启动区,中纬度则为结束区;对北半球的东西半球而言,东半球欧洲大陆为启动区,而大西洋和太平洋西部及亚洲大陆东部为结束区。
Using FGGEⅢb data in 1979, the seasonal variation of global atmospheric circulation in stratosphere and their relationship during January to July has been studied in the paper. The results show that the seasonal variation in the Southern and Northern Hemispheres associates with each other. In stratosphere, while the strong easterly wind appears in the low latitudes over the Northern Hemisphere, it disappears in low latitudes over the Southern Hemisphere; while the polar night jet appears in the Southern Hemisphere, it disappears in the Northern Hemisphere. Whichever seasonal variation over the Southern Hemisphere will be related to the variation over the Northern Hemisphere. If we defined that the earliest and the latest areas of seasonal variation are the starting and the ending area of seasonal variation, respectively. Then starting area of seasonal variation is in high latitudes of both hemispheres, the ending area is in middle latitude of the Northern Hemisphere. In the Northern Hemisphere, the Europe is another starting area, but the western part of the Pacific and the eastern part of the Asia and the Atlantic Ocean are the ending areas.
出处
《高原气象》
CSCD
北大核心
1992年第2期170-177,共8页
Plateau Meteorology
关键词
平流层
季节变化
大气
环流
Stratosphere
Seasonal variation
Atmospheric circulation.
