城市化进程对安徽省风速的影响  

Impact of Urbanization on Wind Speed in Anhui Province

作　　者：陶寅[1,2,3] 黄勇[2,3] 杨元建[2,3] 王凯 程向阳 汪明光 吴蓉[4] 

机构地区：[1]安徽省防雷中心,合肥230061 [2]安徽省气象科学研究所安徽省大气科学与卫星遥感重点实验室,合肥230031 [3]寿县国家气候观象台,寿县232200 [4]安徽省气候中心,合肥230031

出　　处：《气候变化研究进展》2016年第6期519-526,共8页Climate Change Research

基　　金：国家自然科学基金(41205126);安徽省自然科学基金(1408085MKL60;1508085MD64);安徽省气象科技发展基金(KM201516)

摘　　要：利用1981—2010年安徽省61个站的逐日风速资料,结合卫星遥感台站分类方法,统计分析了城市化进程对年、季节平均风速、最大风速和小风日数的影响和贡献。结果表明:(1)近30年安徽省年、季节平均风速和最大风速呈显著减少趋势,小风日数呈显著增加趋势。城市站的变化速率明显大于乡村站,郊区站基本介于二者之间。(2)2000年开始安徽省城市化进程加快,导致城市站与乡村站平均风速及小风日数距平的差异有明显增大趋势。(3)城市站与乡村站年平均风速的趋势系数之差为-0.10(m/s)/10a,城市化对年平均风速减弱的贡献率为40.0%,春季更明显;城市站与乡村站年小风日数的趋势系数之差为15.58d/10a,城市化对年小风日数增多的贡献率为46.9%,秋、冬季更明显;城市化对年最大风速的影响不明显。Using daily wind speed data of 61 stations with satellite-based station classification in Anhui province during 1981-2010, urbanization effects and contributions to the trends of annual and seasonal mean wind speed （Wa）, maximum wind speed （Wm） and low wind speed （〈2 m/s） days （Lwd） were analyzed. Both the annual and seasonal Wa and Wm presented significant decreasing trends, and Lwd showed significant increasing trends in Anhui province during recent 30 years. Especially, all the trends of Wa,Wm and Lwd at urban stations were obviously larger than those at suburban and rural stations, meanwhile, the trends at suburban stations were generally larger than those at rural stations. Due to the acceleration of urbanization in Anhui province after 2000, the differences in both Wa and Lwd between urban stations and rural stations were becoming bigger and bigger. The difference in trend coefficients of Wa between urban stations and rural stations was about -0.10 m/s per decade, and the corresponding urbanization contribution was about 40.0% to the total decreasing trends of annual Wa. For seasonal Wa, the largest contribution appeared in spring. The difference in trend coefficients of Lwd between urban stations and rural stations was about 15.58 d per decade, and the corresponding urbanization contribution was about 46.9% to the total increasing trends of annual Lwd. For seasonal Lwd, the larger contributions mainly appeared in autumn and winter. The effects of urbanization on Wm were generally insignificant.

关 键 词：城市化效应 风速 贡献率 安徽省 

分 类 号：P461[天文地球—大气科学及气象学]