北半球冬季平流层环流的持续异常  

PERSISTENT ANOMALIES OF THE NORTHERN HEMISPHERE WINTERTIME STRATOSPHERIC CIRCULATION

作　　者：李自强[1] 高由禧[1] 瞿章[1] 

机构地区：[1]中国科学院兰州高原大气物理研究所

出　　处：《高原气象》1990年第3期235-244,共10页Plateau Meteorology

基　　金：国家自然科学基金

摘　　要：本文利用1975—1976到1985—1986年共11个冬季的50hPa位势高度场(10°×10°) 资料,揭示了北半球冬季平流层环流持续异常的观测研究结果。 　分析结果表明:北半球冬季平流层内存在显著的环流持续异常,主要出现在三个地区: 北美地区、亚洲大陆北部区、西欧北部巴伦支海及新地岛地区,其中以北美地区最为显著; 北美地区异常持续的位势高度场距平与亚洲大陆北部距平还具有明显的See—Saw现象,遥相 关特征十分清晰。文中还进一步指出北半球冬季平流层环流具有比对流层环流更显著、强烈 的持续异常。Using 50 hPa geopotential height data (10×10 Lat. / Lon.) for the winter seasons from 1975/ 1976 through 1985/ 1986, the observational study results of stratospheric circulation persistent anomalies are presented. The results show that there exist marked persistent anomalies in 50 hPa height fields during the period of the Northern Hemisphere wintertime, which mainly occurr over three regions: North America, the Northern Asia and the Northwest Europe, especially North America. There are also obvious See-Saw relationship between the persistent anomaly of 50 hPa height departure over North America and Northern Asia, and their teleconnection patterns over the both regions are very evident. Finally the persistent anomalies of stratospheric circulation in Northern Hemisphere wintertime are more striking and stronger than those tropospheric circulation.

关 键 词：平流层 环流 持续异常 北半球 

分 类 号：P421.32[天文地球—大气科学及气象学]