Raw Nighttime Light Pollution Data of Chattogram District

This study investigates the trend of light pollution in Chattogram, Bangladesh, over a 30-year period from 1992 to 2021. Utilizing nighttime satellite data from the DMSP/OLS and VIIRS, the research applies higher-order multiple regression analysis with 2012 as the reference year. Findings reveal a significant increase in light pollution, from 9.2% in 1992 to 24.3% in 2021, with the most pronounced rise in the south-west direction. The Chattogram Metropolitan area experiences the highest levels of light pollution, followed by adjacent regions. A strong positive correlation is identified between built-up areas and light pollution, particularly in the metropolitan area (R² = 0.508). The study attributes the increase in light pollution to uncontrolled urban expansion, industrial growth, and excessive port illumination. Recommendations include regulating urban and industrial development and controlling nighttime lighting to mitigate light pollution. This research aims to support environmental conservation planning and assist organizations in identifying and addressing light pollution zones through effective nighttime environmental policies.

本研究针对孟加拉国吉大港市（Chattogram）1992年至2021年这30年间的光污染变化趋势展开调研。本研究采用国防气象卫星计划/运行线扫描系统（DMSP/OLS）与可见光红外成像辐射仪套件（VIIRS）的夜间卫星遥感数据，以2012年为基准年份开展高阶多元回归分析。研究结果表明，光污染水平显著提升，从1992年的9.2%攀升至2021年的24.3%，其中西南方向的光污染增幅最为显著。吉大港市都会区的光污染程度最高，邻近区域次之。研究还识别出建成区面积与光污染之间存在较强正相关关系，尤其在都会区内（R²=0.508）。本研究将光污染加剧的原因归结为不受管控的城市扩张、工业发展以及港口过度照明。据此提出的防控建议包括规范城市与工业开发、管控夜间照明，以缓解光污染问题。本研究旨在为环境保护规划提供决策支撑，并助力相关机构通过有效的夜间环境政策，识别并治理光污染区域。

搜集汇总

背景与挑战

背景概述

该数据集包含1992至2021年间孟加拉国Chattogram地区的夜间光污染原始数据，通过DMSP/OLS和VIIRS卫星数据采集，并采用高阶多元回归分析。研究发现该地区光污染显著增加，特别是西南方向和都市区，与建成区面积呈强正相关，主要归因于城市扩张、工业增长和港口照明。