日太阳散射辐射月均值估算模型的对比分析

A comparative study on estimating models to compute monthly mean daily diffuse solar radiation

散射辐射是地表太阳辐射的重要组成部分,其计算十分复杂。文章在前人研究成果的基础上,结合中国亚热带季风气候区的实际情况,以昆明为例,对9种已有的和文章所提出的2种日太阳散射辐射月均值估算模型进行了对比分析,并在武汉和广州对表现良好的模型进行了验证。结果表明,用文章所提出的模型估算昆明、武汉、广州的日太阳散射辐射月均值,具有较其它方法更高的模拟精度。因此,该模型可尝试用于我国亚热带季风气候区日太阳散射辐射月均值的估算。

Solar radiation is one of the most significant energy resources for Earth, and its research plays an important role in the study and development of renewable energy system, meteorology, building design, remote sensing and so on. As a fundamental component of Earth surface solar radiation, difiuse solar radiation＇s calculation is very complex. Considering the subtropical monsoon climate in China （SMCC）, nine existing and two proposed empirical models, which estimate monthly average daily diffuse radiation based on previous researchers＇ study using data from Kunming meteorological station, are compared. Meanwhile, three models of them are validated in Wuhan and Guangzhou station. The result shows that the proposed models perform better than any other existing models, at least in Kunming, Wuhan, and Guangzhou, so the proposed models are suggested to be applied to compute monthly mean daily diffuse solar radiation in SMCC.