Monthly average daily diffuse solar radiation in Poland within the period 2005–2015

Małgorzata Kleniewska,Dorota Mitrowska,Bogdan H Chojnicki,W Zielinski,A Michalski,L Kuchar,B Kazmierczak

doi:10.1051/itmconf/20182300020

Abstract

In this paper an 11-year series of daily values of diffuse solar radiation registered at 8 actinometric stations in Poland was used to describe the characteristics of diffuse radiation and diffuse fraction of global radiation for the area of Poland. Based on the monthly average daily diffuse, global and extraterrestrial solar radiation a linear relationship between these elements was determined. The obtained equation enables the calculation of the monthly average daily diffuse solar radiation for Poland and the application of its values to further climatology studies.

Highlights

The estimation of the amount of total solar radiation (H), its structure, temporal and spatial variations and their reasons are essential for a number of research areas, such as topoclimatology [1], agriculture [2] or sustainable technologies [3]
The distribution of the maximum values of diffuse solar radiation shows a privileged position of the areas of central and south-western Poland: Legnica 9.57 MJm-2, Wieluń and Jarczew 9.3 MJm-2, Warsaw 9.18 MJm-2
The monthly average daily diffuse solar radiation

Summary

Introduction

The estimation of the amount of total solar radiation (H), its structure (the share of beam and diffuse radiation), temporal and spatial variations and their reasons are essential for a number of research areas, such as topoclimatology [1], agriculture [2] or sustainable technologies [3]. Changes in cloudiness and the quantity of natural and anthropogenic aerosols cause changes in the amount of total radiation and its structure [8, 9]. This may lead to changes in the exchange of carbon dioxide between the atmosphere and the surface, and global changes in the efficiency of ecosystems and the land carbon sink. In Warsaw, there are two opposite, statistically significant trends were observed in the analyzedtotal solar radiation series: the decrease in the years 1964–1981 and an increase of H from 1984 to 2013 [13]

Methods

Results

Conclusion