Temperature Division Based On The CAST Model In Anhui Province

By using some related index, Climatic division divide step by step the climate ofgloble and some area according to purpose of reserch and the requirment of Industrydepartment to the climate. Climatic division can not only provide targeted the reference forindustrial and agricultural production、 all social and economic construction anddevelopment human response and adapting to future climate change,but also havingimportant value on scientific research.In the study,we use a new climatic division model method of CAST and the traditionalmethod to differentiate the climate in anhui province,in order to verify REOF and CASThaving equivalence and complementation for meteorological field of classified divisionThis article chooses15stations in anhui province in1961-2010from50years oforiginal information.By calculating I have gotten the average temperature of year、theaverage temperature of season、the average temperature of month as the factor and usedArcGIS software to get climatic division results with two methods in Anhui province.1、Yearly averaged Climatic divisionIt can be divided into three areas in Anhui province of yearly averaged Climaticdivision with CAST model.1area(Bozhou、Dangshan、Suzhou、Fuyang、Shouxian、Hefei、Bengbu、Chuzhou and so on).2area(Luan、Chaohu、Huoshan and so on).3area(Anqing、Huangshan、Ningguo、Tunxi and so on).Compared with the traditional climatic division,Hefei and Chuzhou is divided in the1area where is the area of north of the huaihe river.2、Quarterly averaged Climatic divisionIt can be divided into three areas in Anhui province with CAST model.Every climaticdivision is different.Form the climatic division of summer, autumn, winter season,we canfind that the1,2area have the expanded tendency to south-east and the3area is shrinkingwhen the temperature decrease. Compared with the traditional climatic division, the maindifference is in the2,3area.3、Monthly averaged Climatic divisionIt can be divided into three areas in Anhui province with CAST model.The size of theClimatic division was differences.The1、2area have extension of the trend and the3areagradually become larger because of the rising temperature from February toJuly.however,the1、2area have the trend of increase and3area is gradually narrowedbecause of the dropping temperature from July to November. The month averagetemperature of the climatic division and traditional results of climatic division are very similar, only having difference in the individual sites.The result shows that: The CAST clustering analysis not only considers the climate ofthe average state problem, but slso fully consider the correlation of decades timemeteorological data each site and consider the similar degree of each site.Compared withthe traditional method, the CAST model has more dynamic and objectivity and has someof the rationality and reliability.At the same time, based on the results of the CAST modeldivision whether apply to other areas, we also need to be research and work more in-depthin more areas. We hope to support more reliable reference for agricultural production.