摘要
利用ＮＯＡＡ的欧亚大陆冬季月平均雪盖面积资料和中国气象局的北半球夏季５００ｈＰａ高度场资料进行统计分析，发现欧亚大陆冬季雪盖面积异常可以激发北半球夏季积雪强迫型遥相关，它具有显著的准４年周期。在准４年时间尺度上，建立了积雪强迫型遥相关和东亚太平洋型遥相关的可能联系，推测了准４年循环中的可能作用过程。
Based on NOAA Eurasian winter monthly mean snow cover extent and the NorthernHemisphere summer 500 hPa height;; a statistical analysis is performed;; indicating that Eurasian wintersnow cover extent anomaly may excites an abnormal Northern Hemisphere summer snow-forced pat-tern teleconnection;; which is significantly of quasi-4-year period;; and establishing a possible linkagebetween snow-foreed pattern and East Asia Pacific teleconnection as well as deducing the possible ac-tion processes with quasi-four-year scale.
出处
《大气科学》
CSCD
北大核心
1999年第2期152-160,共9页
Chinese Journal of Atmospheric Sciences
基金
国家自然科学基金!49575261
关键词
大气遥相关
准四年循环
大气环流
雪盖
太平洋
Eurasian winter snow cover summer atmospheric teleconnection quasi-four-yearcycle
