A simple model for estimating monthly mean daily sums of solar irradiation and its local distribution

✍ Scribed by M. Skiba; M. Mohr; H. Unger

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 456 KB
• Volume: 21
• Category: Article
• ISSN: 0363-907X
• DOI: 10.1002/(sici)1099-114x(19971010)21:12<1145::aid-er316>3.0.co;2-v

✦ Synopsis

This paper deals with linear correlations between solar irradiation sums and sunshine duration for mapping global, diffuse and direct irradiation. All values represent long-term averages of monthly mean daily sums. The first part of this paper describes a set of fourteen correlation equations based on an earlier study. The constants of all correlations depend on a common numerical triple that describes the climatic conditions. The constants, correlation coefficients and the triple are determined and discussed with reference to the example of two stations in the Federal Republic of Germany. In the second part, a general method for generating solar irradiation maps is proposed and applied for the state of North-Rhine Westphalia (FRG). The distribution of global and diffuse irradiation in terms of yearly averages is shown and discussed.