Spatial Panel Analysis of Ambient Air Pollution in Korea
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This study investigates the underlying drivers behind air quality pollution in Korea by using spatial panel analysis. Specifically, we consider the local and transboundary effects of economic, climatic, and geographical factors leading to the heightened presence of fine particulate matter (PM2.5). Furthermore, our study expands its scope beyond national boundaries to include an evaluation of external sources that contribute to elevated pollution levels within Korea. Consequently, this research adopts a multilevel approach to assess the within and outer factors of air pollution in Korea. Our analysis is based on a spatial panel dataset spanning all districts of Korea by incorporating satellite-based air pollution, meteorological, and geographic information for 2010–2016. Empirical results indicate that air pollution degrades the air quality in other cities and the overall national ambient pollution as well. Moreover, empirical results from the general nesting spatial (GNS) specification of spatial interaction suggest that the impacts of economic and climatic factors on air pollution are substantial. In addition, our analysis incorporates cross-country spatial effects of air pollution, which reveals a significant transboundary spillover effect. Furthermore, a deeper analysis of spatial heterogeneity underscores intriguing disparities in the impact estimates. Changes in domestic and foreign factors in the northwest region are linked to a more pronounced diffusion of pollution to multiple cities in contrast to the impacts originating from the southeast.
Abstract
This study investigates the underlying drivers behind air quality pollution in Korea by using spatial panel analysis. Specifically, we consider the local and transboundary effects of economic, climatic, and geographical factors leading to the heightened presence of fine particulate matter (PM2.5). Furthermore, our study expands its scope beyond national boundaries to include an evaluation of external sources that contribute to elevated pollution levels within Korea. Consequently, this research adopts a multilevel approach to assess the within and outer factors of air pollution in Korea. Our analysis is based on a spatial panel dataset spanning all districts of Korea by incorporating satellite-based air pollution, meteorological, and geographic information for 2010–2016. Empirical results indicate that air pollution degrades the air quality in other cities and the overall national ambient pollution as well. Moreover, empirical results from the general nesting spatial (GNS) specification of spatial interaction suggest that the impacts of economic and climatic factors on air pollution are substantial. In addition, our analysis incorporates cross-country spatial effects of air pollution, which reveals a significant transboundary spillover effect. Furthermore, a deeper analysis of spatial heterogeneity underscores intriguing disparities in the impact estimates. Changes in domestic and foreign factors in the northwest region are linked to a more pronounced diffusion of pollution to multiple cities in contrast to the impacts originating from the southeast.
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