Comparative Analysis of Precipitation Variation Trend in Summertime Between Almaty and Urumqi
Based on the precipitation observation data during 1967-2009 in Almaty Station of Kazakhstan and Urumqi Station of Xinjiang,this paper analyzed the climatic variation of summer precipitation with methods such as simple linear regression method,Mann-Kendall abrupt test and Morlet wavelet analysis.The results showed that the summer precipitation of Almaty and Urumqi increased,and the precipitation was less from 1970s to 1980s than that from the 1990s to 2009;Urumqi had the abrupt point in 1982,and Almaty had no abrupt point; before 2000,Almaty had the main short period variation of 6-8 a,and then the long period variation of 15-16 a was obvious.Urumqi had the main shorter periodic change of 4-6 a before 1987 and the longer period variation of 16a since then.
国家科技期刊平台
NSTL
万方数据
维普
