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Analysis of Thermal Resource in the Southwest of Sichuan

XIAO Guo-jie (CAS,Chengdu University of Information Technology,Chengdu,Sichuan 610225)  
By using the observation data from 7 meteorological stations in the southwest of Sichuan from 1960 to 2007,the changes of the starting date,ending date,duration days and the accumulated temperature above 0 ℃,5 ℃,10 ℃ in different space and different years were analyzed.It was found that there were increasing trend on the accumulated temperature above 0 ℃,5 ℃ and 10 ℃ in the southwest of Sichuan.In the 48 years,thermal resource and duration days most remarkably increased from 1998 to 2007,especially the accumulated temperature above 0 ℃,5 ℃ and 10 ℃ rose with the highest range in the east and west of the southwest of Sichuan,in the Xichang plane was taken second place,and in Yanyuan area rose with the lowest range.The starting date of the accumulated temperature above 5 ℃ was earlier,it's ending date was later and it's duration days were rising than the accumulated temperature above 0 ℃ and 10 ℃.In the space,duration days of the accumulated temperature above 5 ℃ and 10 ℃ most remarkably increased in the east and west of the southwest of Sichuan.
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