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- Title
Spatial distribution of light pollution severity through GIS & remote sensing: a study based on Rajshahi and Dhaka District in Bangladesh.
- Authors
Rahim, Md. Raufur; Alif-Al-Maruf, Md.; Islam, Foysal Malik Ibne; Rahman, Md. Mostafizur
- Abstract
Artificial lighting is essential for supporting human activities during nighttime. Excessive artificial light causes pollution. This type of pollution impairs our ability to see the night sky clearly and results in the wasteful consumption of excessive energy. This research investigates the extent and impact of light pollution in the rapidly urbanizing cities of Rajshahi and Dhaka, employing Geographic Information Systems (GIS) and remote sensing techniques. The primary objectives of this thesis are to assess the extent and intensity of light pollution in the study areas. The authors utilized multi-temporal DMSP/OLS nighttime light satellite imagery spanning the period from 1992 to 2013. Additionally, VIIRS Day/Night Band (DNB) images from 2013 to 2022, accessed through Google Earth Engine, were employed to provide more recent data for analysis. These datasets were processed and analyzed within a GIS framework to delineate the extent of light pollution and its temporal evolution, allowing for the identification of hotspots and trends over the years. The findings of this study reveal the profound impact of urbanization on light pollution, with notable differences between the two cities. Despite the geographically smaller size of the Dhaka district than the Rajshahi district, the total amount of nighttime light is substantially larger in Dhaka. Light pollution, which differs in terms of spatial position, contributes to Dhaka City's rapid urbanization, which includes industrial and commercial activity and is located in the middle of Bangladesh. On the other side, Rajshahi, which is located in northern Bangladesh, has less light pollution than Dhaka because of its relative lack of industrial and commercial activity.
- Publication
GeoJournal, 2024, Vol 89, Issue 5, p1
- ISSN
0343-2521
- Publication type
Article
- DOI
10.1007/s10708-024-11172-w