Spatial-temporal changes of temperature in Anhui Province during 1970～2008
The average temperature,extreme maximum and minimum temperature in Anhui Province during 1970-2008 are interpolated according to Co-kriging in this paper.The resuits are as follows.Firstly,the average temperature is 15.7℃,and the southern part of the province and the zones along the Yangtze River are the high temperature regions where the temperature is higher than 16℃;Secondly,the average daily extreme maximum ternperature(DETmax)is 37.5℃,higherin the southern and northern parts but lower in the middle part.and even sometimes the average DETmax in the south is lower than that in the north.Thirdly,the average daily extreme minimum temperature(DETmin)is about8.3℃.It is below-9.4℃ to the north of Huaihe River,and above-7.O℃ in the areas along the Yangtze River.The centers of the maximum temperature are Wangj iang,Susong,Huaining and Dongzhi where the temperature is above-6.9 ℃.Therefore,the distribution of average DETmax is inconsistent with that of the average temperature,while the distribution of average DETmin is consistent with that of the average temperature.The former shows that the spatial-temporal pattern of the DETmax is unstable,while the latter shows that the spatial-temporal pattern of the DETrain is stable.It is found that the inter-decadal variation of the DETrain is low in the 1970s and 1990s and high in the 1980s and the first ten years of the 21st century(hereafter 2000s).The annual average temperature and DETmax rose in the 1970s,1990s and 2000s,and fen in the 1980s.It is worth noting that the increase of average temperature in the 2000s is 0.1℃lower than that in the 1990s.The cities along the Yangtze River,such as Wuhu,Anqing and Ma'anshan,have made great contributions to temperature increase.The annual average temperature in the 2000s is 0.8℃ higher than that in the 1990s.The DETmin in the 2000s is 1.13℃ higher than that in the 1990s.The annual average temperature in the 1990s is 0.7℃ higher than that in the 1980s.The DETmax in the 1990s is 0.25℃higher than that in the 1980s.The increase in cities along the Yangtze River exceeds twice in comparison to the Dabieshan mountainous area.Therefore,the temperature variation can be slowed down if urban construction is reasonably programmed,the forest cover rate is raised and the environment is protected.
Co-krigingspatial-temporal patternannual average temperaturedaily extreme maximum/minimum temperatureinter-decadal variationAnhui Province
NETL
NSTL
万方数据
维普
