Solar Radiation Climatology Calculation in China  

中国太阳总辐射的气候学计算法研究(英文)

作　　者：王晨亮[1,2] 岳天祥[1] 范泽孟[1] 

机构地区：[1]中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室,北京100101 [2]中国科学院大学,北京100049

出　　处：《Journal of Resources and Ecology》2014年第2期132-138,共7页资源与生态学报（英文版）

基　　金：National Key Technologies R&D Program of China(2013BAC03B05);National High-tech R&D Program of China(2013AA122003)

摘　　要：The Angstrom-Prescott formula is commonly used in climatological calculation methods of solar radiation simulation. Fitting the coefficients is carried out using linear regression and in recent years it has been found that these coefifcients have obvious spatial variability. A common solution is to divide the study area into several subregions and ift the coefifcients one by one. Here, we use ground observation data for sunshine hours and solar radiation from 1961 to 2010. Adopting extraterrestrial radiation as the initial value, Angstrom-Prescott coefifcients are obtained by Geographically Weighted Regression at a national scale. The surfaces of solar radiation are obtained on the basis of the surfaces of sunshine hours interpolated by high accuracy surface modeling and astronomical radiation;results from spatial y nonstationary and error comparison tests show that Angstrom-Prescott coefifcients have signiifcant spatial nonstationarity. Compared to existing research methods, the method presented here achieves a better simulation effect.Angstrom-Prescott公式的气候学计算法是应用较广的太阳辐射模拟方法,其系数一般通过线性回归确定。近年来,许多研究显示该系数存在明显的空间变异性,常见的解决方法是将研究区划分子区域逐个拟合。本研究采用1961-2010时段日照时数与太阳辐射站点资料,以天文辐射为起始值,基于地理加权回归得到全国尺度连续变化的Angstrom-Prescott系数。通过高精度曲面建模方法(HASM)构建的日照时数资料和天文辐射曲面,得到国家尺度太阳辐射曲面。空间非平稳和误差比较检验等结果表明,系数存在显著的空间非平稳性;与已有研究相比,本研究的模拟方法效果较好。

关 键 词：total solar radiation extraterrestrial radiation Geographically Weighted Regression spatialnonstationarity Angstrom-Prescott formula HASM climatology. 

分 类 号：P422.1[天文地球—大气科学及气象学]