江苏省太阳总辐射的分布特征

The distribution characteristics of total solar radiation in Jiangsu province

利用江苏省淮安、南京、吕泗3站的逐月太阳总辐射资料和70个气象站的月日照百分率资料,采用气候学计算方法,计算并分析了全省各地逐月的太阳总辐射分布,指出江苏省太阳总辐射的季节分布特征是冬少夏多,春秋适量;太阳总辐射区域分布是北多南少;太阳总辐射的年变化呈现明显的双峰型分布,最大峰值分别出现在5月和7月下旬—8月上旬,6月下旬—7月上旬出现一个相对低谷阶段,恰好与江淮梅雨期多阴雨天气相对应。本文的结论为江苏省太阳能资源的开发利用提供了科学依据。

The monthly total solar radiation from 3 solar radiation stations in Huaian, Nanjing, and Lusi and the monthly percentage of sunshine from 70 meteorological stations in Jiangsu province were a- dopted to calculate and analyze the solar radiation distribution across the province by using regular clima- tological methods. The result shows that the solar radiation in Jiangsu is dependent on season, it is higher in summer and lower in winter and moderate in spring and fall. It is higher in the north region and lower in the south. The annual variation of solar radiation is apparent bimodal distribution with the maximum in May and in late July and early August, the relative low stage appears from late June to early July, which is coincident with plum rains in Jiangsu and Huaihe.