南京气象学院学报2001，Vol.24Issue(1)：59-65,7.
近40年高层温度场和高度场的时空变化特征
THE TEMPORAL AND SPATIAL VARIATIONS OF THE UPPER LEVEL TEMPERATUREAND HEIGHT FIELDS IN RECENT 40 YEARS
摘要
Abstract
The 300 hPa monthly mean temperatures and the 100 hPa monthly mean heights derived from the NCEP/NCAR reanalysis data from 1958 to 1997 are analyzed by four data processing schemes ,respectively. The results are compared with one another. It is shown that the dependability of the 300 hPa temperature data is super to that of the 100 hPa height data. The temporal and spatial variations of the temperature and the height fields are also analyzed and the periodic analysis of the two elements is conducted by means of the Morlet wavelet technic. It is found that the first EOF modes of the two fields both have good spatial consistence and temporal persistence, as well as evident interannual and decadal variations with main periods of about 10 years and 2～5 years respectively.
关键词
温度场/高度场/时空变化/诊断分析分类
天文与地球科学引用本文复制引用
毕云,钱永甫..近40年高层温度场和高度场的时空变化特征[J].南京气象学院学报,2001,24(1):59-65,7.
