Solar parameters of the local climate during the summer in relation to data from typical meteorological year

Czestochowa University of Technology, Faculty of Infrastructure and Environment, ul. Brzeźnicka 60a, 42-200 Częstochowa, Poland

^* Corresponding author: joa@is.pcz.czest.pl

Abstract

Parameters characterizing the properties of the local climate, among them the solar irradiance, as part of the so-called Typical Meteorological Year – TMY, are often averaged and modeled. To determine the actually available solar conditions, it is beneficial to perform additional studies of climate factors in specific locations. The article presents the analysis of the solar irradiance measurements results for Częstochowa, carried out in June, July and August, in different years, in comparison to data from typical meteorological year for this period. TMY developed in Poland as well as TMY from PVGIS databases were used. Due to the occurrence of significant discrepancies in the values of solar irradiance, in the considered large data sets, it was found necessity to update the currently used TMY PL for Częstochowa, which were determined on the basis of data from the years 1971–1991. The analysis also included local sunshine duration and its summer anomalies. In addition, the dependence of solar conditions on the particulate matter PM10 content in the air, which is rarely considered in the summer, is presented.