Climate Change Around the Badain Jaran Desert in Recent 50Years
The meteorological data of 9 stations around the Badain Jaran desert are analyzed based on the liner regression method,5-year moving average method and Mann-Kendall abrupt test to get the feature of climate change in this area in the past 50 years.The data includes monthly mean temperature,mean maximum temperature,mean minimum temperature,precipitation,mean relative humidity and sunshine duration from 1960 to 2009,and monthly mean wind speed from 1960 to 2008.In this study,the annual mean temperature showed a significant increase with a rate of 0.4 ℃/10a in recent 50 years.The increase of seasonal mean temperature was also very apparent,with the most rapid in winter.The annual and seasonal mean maximum and the mean minimum increased also,which was characterized by the fact that the minimum temperature increased faster than maximum.But the annual and seasonal mean daily temperature range decreased obviously.The precipitation increased slightly with a rate of 0.87 mm/10a,and changed differently in different seasons： it decreased slightly in spring and increased slightly in summer,autumn and winter.The fluctuation of wetness degree did not change much,with a overall trend of increase in annual and winter while decrease in spring,summer and autumn.Annual duration of sunshine increased significantly with a rate of 34.8 h/10a.Seasonal sunshine duration also increased and the most significant increase occurred in spring.Annual mean wind speed change showed a dramatic decrease trend with a rate of 0.09 m·s-1·（10a）-1.All seasonal mean wind speed decreased significantly and especially in winter.
NETL
NSTL
万方数据
维普
