1月中国地温异常与北半球500hpa高度场异常关系的合成分析

在对中国区域１月份０．８ｍ月平均地温距平场进行ＥＯＦ分析的基础上，研究了中国地温异常与北半球５００ｈＰａ高度异常的关系。结果表明：地温异常与大气环流有一定的关系；与地温异常同月和前一月的大气环流距平分布相似，而与后一月的大气环流不同。进一步分析表明，前一月的大气环流异常至少部分地激发了１月份的地温异常，反过来地温又影响大气环流。

COMPOSITE ANALYSIS OF RELATION OF JANUARY SURFACE TEMPERATURE ANOMALY IN CHINA TO NORTHERN 500 HPa HEIGHT ABNORMALITY

Based on the EOF analysis of the January mean temperature field at 0.8 m under theground over China,astudy is made of the dependence of the surface temperature anomaly onnorthern 500 hPa height anomaly.Results show that the temperature abnormality bears a certainrelation to atmospheric circulation regime, and that the circulation departure pattern is similar inthe month with the ground temperature anomaly to that of December and different from that ofFebruary. Further investigation indicates that the December atmospheric circulation anomaly isresponsible at least partially for the surface anomaly in China,which,in turn,exerts effect onthecirculation.