摘要
过去对大气遥相关的研究集中在对流层,特别是500 hPa,为了对低频变化水平结构有深入的了解,有必要研究其在平流层中的表现。本文选择了能体现平流层动力学特征的30 hPa层,对其月平均及冬季每日的高度场展开了研究。结果表明:平流层大气同样存在着遥相关型,主要表现为冬半年极冠地区与中低纬的南北向跷跷板型及夏半年的单一正相关型。在冬季南北向跷跷板型的背景上。
In this paper the teleconnection for the 30-hPa geopotential height in Norh-ern Hemisphere has been described. In winter it produces a meridional seesaw pattern between polar-cap and large areas at mid and lower latitudes. In summer it is positively correlated only. The meridional seesaw pattern is superimposed on in January by a planetary wave train of Soviet Union-Pacific-Greenland (SPG) type along the great circle route. Further more,The dependence of winter teleconnection on time and the relation of winter teleconnection and synoptic reality are discussed.
出处
《气象学报》
CSCD
北大核心
1992年第2期248-251,共4页
Acta Meteorologica Sinica
