| Based on the information of temperature, precipitation and wind speed etc from 1971 to 2010 of Shanshan County, using the methods of linear trend and accumulated anomaly, have carried out the analysis of climatic change in oasis of Shanshan County. The results indicated that: (1) The annua
l mean temperature has assumed a undulated increase trend in near 40 years, the climatic tendency rate by the linear fitting was 0.49℃/decade, the trend changing warm in each season was same, the mean temperature of the climatic tendency rate by the linear fitting in spring, summer, autumn and winter was 0.35℃/decade, 0.33℃/decade, 0.4℃/decade and 0.43℃/decad respectively. The annual mean maximum temperature was slowly risen, the annual mean minimal temperature was obvious warm. (2) The annual gross precipitation was a undulated decrease trend during 40 years, the climatic tendency rate by the linear fitting was -0.55 mm/decade, the precipitation reduce was obvious in summer and autumn. (3) The annual mean wind velocity was assumed a slowly decrease trend during 40 years, and the cli
matic tendency rates by the linear fitting was -0.05 m/s/decade. Synthesized the change situation of the temperature and precipitation, The oasis climate has assumed a warm and dry developing trend in Shanshan County, the temperature and precipitation existed a mutation, also the years distribution had the obvious period change and seasonal differences. |