Spatial-temporal shift for major boundary of climate regionalization based on meteorological data stimulated by HadCM3 during from 1950-2059 in China
YANG Qiang;ZHENG Xi-nan;HE Li-heng;College of Civil Engineering,Nanjing Forestry University;
The study on regional distribution regularity of climate and its temporal-spatial evolution characteristics is one of the core contents of climate change research. Climatic regionalization data in this paper contains measured data such as average annual temperature,average annual precipitation,relative humidity of 200 meteorological stations which are evenly distributed in China during from 1951 to 2014,and monthly dataset based on HADCM3(Hadley Centre Coupled Model,Version 3)as meteorological simulation data(including average annual temperature,average annual precipitation and average annual relative humidity). We preprocess the data and evaluate the precision of the simulation data by using measured data from meteorological stations,and then use meteorological indicators simulated by HADCM3 as basis dataset for the division of thermal zones and moisture regions to divide the whole country,analyze the movement of zones' boundaries,finally reveal the future climate change and development in our country. Results indicate that under the effect of global warming,the annual average temperature increases slightly,and heat resources show an increasing trend in China during 1950-2059. Temperature zones has an obvious shift in some regions of China. The boundary of the cold temperate zone is moving to the north,and there is an increasing trend in speed. The northward trend of the middle temperate zone boundary and eastern part of warm temperate zone boundary is clear. The subtropical boundary moves to north and has crossed the Line of Qinling and Huai River,and the northward in the eastern segment is more obvious than that in others. The tropical zone is moving towards the mainland,and its range is increasing gradually. The area of vertical temperature zone in Tibet decreases in different period. Thus,boundary line of every temperature zone on the above shifts to the north. At the same time,there has been a change in the moisture regions in China. However,the degree of the change is relatively small. In northeast China,the climate is changing from wet to dry,becoming a region of both wet and dry. In the Qinghai-Tibet Plateau and Xinjiang Province,overall,it's getting wet,though parts of the semi-arid regions among here have turned to arid regions. However,the diving line of arid area and humid area of these areas does not show obvious change. The moisture regions in north China plain also change. The diving lines among arid areas,humid areas,semi-humid areas,and humid areas,are all moving to northwest. The diving line in the southern area in China almost has no change basically. In a word,based on the meteorological data stimulated by Had CM3,the climate will change into much warmness and wetness in most regions of china,except for northeast China. And the trend of climate change has been cognized in detail in the study so that our human can take measures to adapt this change in the feature.
【Fund】： 江苏省测绘地理信息科研项目(JSCHKY201507);; 国家自然科学基金(41271427)
【CateGory Index】： P467
【CateGory Index】： P467