Abstract
Light pollution is one of the types of environmental pollution. The sky illuminated by the excessive light emission is an inherent element of the modern world. This phenomenon has been known for over a century, but research has been carried out only for several decades. Analysis of the brightness of the sky was made for Toruń (Poland) and neighboring areas. The main aim of the study was to study the distribution of brightness of the sky over a medium-sized city. The basic research method was a direct measurement of brightness made with the SQM photometer. The conducted research was carried out throughout the calendar year on 24 measurement stations located in Toruń. Measurement stations represented various types of buildings occurring in every city. On the basis of the obtained data, a map was made showing the extent of light pollution and its intensity, as well as the spatial distribution of this phenomenon. The brightness of the sky was also examined in terms of astronomical and weather conditions. Each aspect is documented in tabular and visual form.
Highlights
The world around us is becoming increasingly polluted and the effects of this pollution are becoming more and more manifested
The spatial distribution of light pollution in Toruń was derived from the obtained measurement results, i.e. annual and seasonal mean values of the sky brightness
The results of measurements carried out in Toruń are consistent with those obtained in other cities of Europe and worldwide [9,23,29]
Summary
The world around us is becoming increasingly polluted and the effects of this pollution are becoming more and more manifested. The forms of pollution well known to most people are thoroughly research and the results of these studies are made public. Research on light pollution has intensified and is becoming an increasingly popular research topic [9] This phenomenon has not yet been fully researched in a comprehensive and multifaceted way, and not all the factors and parameters related to its occurrence have been determined. The research carried out in Toruń (Poland) and the performed analyses were aimed at a preliminary assessment of the impact exerted by the abovementioned factors. They were preceded by extensive observations of the night sky pollution in the summer season [12]
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