Change Characteristic of Summer Air Temperature in East Monsoon Area in China over Recent 46 Years
Using the mean summer ( June to August) air temperature data of 375 stations in the east monsoon are-a in China , we analyzed the change characteristic of the summer air temperature of the monsoon area . The result shows that (1) The annual mean summer air temperature of the east monsoon area has presented a slowly upward trend over the 46 years, but it presented a downward trend in the Huaihe River Basin. (2)The stability of summer air temperature decreases with the increased latitude. (3) The mean annual incalescence rate of summer air temperature is 0.104℃/10yr. According to the average condition in the whole region, the summer air temperature has presented an remarkably upward trend since the mid 1970s. (4) The variation of the summer air temperature in the monsoon area presented an all area unanimous model at first, then a north to south opposite phase model. (5 ) Using the REOF method we detailedly divide the abnormity of the summer air temperature in the east monsoon area into 6 climatic spatial model. According to the linear regression, the summer air temperature presented an upward trend in northeast China, northern China, the south of the Changjiang River and south China and a slowly upward trend in Southwest China. In the Huaihe River Basin it presented a downward trend different from the global wanning..
east monsoon areasummer air temperaturechange characteristic
NETL
NSTL
万方数据
维普
