摘要
基于ＥＣＭＷＦ１９８０～１９８８年的全球资料，研究了北半球对流层上层两个主要遥相关型（大西洋／欧亚型与太平洋／北美型）的涡度源、能量源及能量传播路径．结果表明，这两个遥相关型的涡度源和能量源分别主要位于北大西洋和北太平洋地区．遥相关型在北大西洋和北太平洋通过正压能量转换从气候平均流中吸收能量，然后从这两个地区将能量向外传播，以维持其水平遥相关结构．
The vorticity source, energy source and energy propagations of the two major teleconnection patterns (the Atlantic/Eurasian patttern and Pacific/North American pattern) arestudied with ECMWF data of 1980￣ 1988, respectively. It is found that the vorticity sourceand energy source of these two teleconnection patterns were mainly concentrated in theNorth Atlantic and North Pacific regions, respectively. They obtained energy from climato-logically mean flow through barotropic energy conversions in the North Atlantic and NorthPacific regions, respectively, and propagate the energy outside from these two regions, so asto maintain their horizontal teleconnection structures.
出处
《应用气象学报》
CSCD
北大核心
1996年第4期414-420,共7页
Journal of Applied Meteorological Science
基金
国家基础性研究重大关键项目
气候动力学和气候预测理论的研究资助.
关键词
遥相关型
涡度源
能量源
能量传播
对流层
大气
Teleconnection pattern j Vorticity source
Energy source
Energy propagation.
