农业工程学报2012，Vol.28Issue(6)：100-105,6.DOI:10.3969/j.issn.1002-6819.2012.06.017
云南省(A)ngstr(o)m-prescott辐射模型的参数化研究
Parameterization of (A)ngstr(o)m-prescott radiation model in Yunnan province
摘要
Abstract
Solar radiation is often needed to be estimated by ordinary data in the current applications now, in which the sunshine-based Angstrom-prescott formula is widely used with highest accuracy. However, the key of its application is to obtain the appropriate local parameters. In this paper, six parameterization methods, one from FAO and the other five from Liu et al., were evaluated using data from three sites in Yunnan province. The results showed that two methods of Liu et al. performed best, and their estimation accuracy was similar to the calibrated ones. In Kunming and Lijiang, the mean bias error (MBE), the root mean square error (RMSE) and the relative root mean square error (PRMSE) was -0.28-0.50 MJ/(m2-d), 2.09-2.39 MJ/(m2-d) and 12.4%-15.8%, respectively. In contrast, the MBE, RMSE and PRMSE obtained by the FAO scheme at these two sites were -0.43-0.84 MJ/(m2-d), 2.61-5.37 MJ/(m2-d) and 17.2%-31.7%, which showed a much lower accuracy than two methods of Liu et al. Considering the fact that it is still a common practice to directly use the FAO method, this research contributed to understand the importance of parameter choice for the Angstrom-prescott model and suggested the calibrated or parameterized parameter can be used as much as possible in practice.关键词
太阳辐射/模型/参数化/(A)ngstr(o)m-prescott公式/云南省Key words
solar radiation/ models/ parameterization/ the Angstrom-prescott formula/ Yunnan province分类
农业科技引用本文复制引用
李曼曼,梅旭荣,钟秀丽,刘晓英,郝卫平,韩会玲,刘文丽..云南省(A)ngstr(o)m-prescott辐射模型的参数化研究[J].农业工程学报,2012,28(6):100-105,6.基金项目
国际科技合作项目(2010DFB30550) （2010DFB30550）
948引进项目(2011-G9) （2011-G9）
国家863项目(2011AA100501) （2011AA100501）
中央级公益性项目(BSRF201107). （BSRF201107）
