1月中国地温异常与北半球500 hPa高度异常关系的奇异值分解

SVD FOR ANALYZING RELATIONS BETWEEM ANOMALIES OF JANUARY'S SOIL TEMPERATURE IN CHINA AND NH 500 hPa HEIGHT

应用奇异值分解方法进一步研究了中国地温异常与北半球500 hPa 位势高度异常的同月和前后各一个月的相互关系,得到了两者之间相互配对的空间典型分布。结果表明,1月中国地温异常与同月和前一个月欧亚地区大气环流异常存在显著的空间配对分布。在此观测分析的基础上,提出了一个地温和大气环流相互作用的可能物理过程。

Singular value decomposition(SVD)is addopted to investigate the relation of soil tem- perature anomaly in China to Northern 500 hPa height anomaly in the same month of January and January temperature to last December hight,previous and subsequent months,deriving a canonical spatial pattern of pairings for both.Evidence suggests that such patterns are noticeable over Eurasia in the same and previous month.Also,possible physical processes are presented for their interaction on the basis of observational study.