Spatial Distribution Characteristics and Analysis of PM2.5 in South Korea: A Geographically Weighted Regression Analysis

IF 2.5 4区地球科学 Q3 ENVIRONMENTAL SCIENCES

Atmosphere Pub Date : 2024-01-06 DOI:10.3390/atmos15010069

Ui-Jae Lee, Myeong-Ju Kim, Eun-Ji Kim, Do-Won Lee, Sang-Deok Lee

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引用次数: 0

Abstract

PM2.5, a critical air pollutant, requires health-conscious management, with concentrations varying across regions due to diverse sources. This study, conducted in South Korea in 2021, employed the geographically weighted regression model to analyze the spatiotemporal correlations of PM2.5 with O3 and the normalized difference vegetation index (NDVI). Regional differences in the correlation between PM2.5 and O3 were observed, influenced by common precursors (SOx, NOx, and volatile organic compounds (VOCs)), seasonal temperature variations, and solar radiation differences. Notably, PM2.5 and O3 exhibited a heightened regression coefficient in summer, emphasizing the need for specific management targeting VOCs and NO2. The interplay between PM2.5 and NDVI revealed a negative overall impact but a positive effect in the central region of Korea, suggesting vegetation’s role in the PM2.5 concentration increase due to atmospheric stagnation caused by mountain ranges. These findings enhance our understanding of PM2.5 distribution mechanisms, highlighting the need for tailored policies in each region for effective concentration reductions.

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韩国 PM2.5 的空间分布特征与分析：地理加权回归分析

PM2.5 是一种重要的空气污染物，需要对其进行健康管理，由于来源不同，不同地区的浓度也不尽相同。这项研究于 2021 年在韩国进行，采用地理加权回归模型分析了 PM2.5 与 O3 和归一化差异植被指数（NDVI）的时空相关性。受常见前体物（硫氧化物、氮氧化物和挥发性有机化合物）、季节性温度变化和太阳辐射差异的影响，PM2.5 与 O3 的相关性存在区域差异。值得注意的是，PM2.5 和 O3 在夏季表现出更高的回归系数，这强调了针对 VOC 和 NO2 进行具体管理的必要性。PM2.5 与 NDVI 之间的相互影响表明，PM2.5 对整体影响是负面的，但对韩国中部地区的影响是正面的，这表明植被在因山脉造成的大气停滞而导致的 PM2.5 浓度增加中发挥了作用。这些发现加深了我们对 PM2.5 分布机制的理解，强调了在每个地区制定有针对性的政策以有效降低浓度的必要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Atmosphere METEOROLOGY & ATMOSPHERIC SCIENCES-

CiteScore

4.60

自引率

13.80%

发文量

1769

审稿时长

1 months

期刊介绍： Atmosphere (ISSN 2073-4433) is an international and cross-disciplinary scholarly journal of scientific studies related to the atmosphere. It publishes reviews, regular research papers, communications and short notes, and there is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles.