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http://dx.doi.org/10.5322/JESI.2016.25.7.973

A Study on Changes in CO2 Concentrations and their Impact on Radiative Forcing at Urban Center and Background Sites on Jeju Island in Recent Years  

Lee, Soo-Jeong (Department of Earth and Marine Sciences, Jeju National University)
Song, Sang-Keun (Department of Earth and Marine Sciences, Jeju National University)
Park, Yeon-Hee (Department of Earth and Marine Sciences, Jeju National University)
Publication Information
Journal of Environmental Science International / v.25, no.7, 2016 , pp. 973-987 More about this Journal
Abstract
The spatial and temporal variations of $CO_2$ concentrations and radiative forcing (RF) due to $CO_2$ were examined at urban center (Yeon-dong) during 2010-2015 and background sites (Gosan) during 2010-2014 on Jeju Island. The RF at the two sites was estimated based on a simplified expression for calculating RF for the study period. Overall, annual mean $CO_2$ concentrations at the Yeon-dong and Gosan sites have gradually increased, and the concentrations were higher at Yeon-dong (401-422 ppm) than at Gosan (398-404 ppm). The maximum $CO_2$ concentrations at the two sites were observed in winter or spring, followed by fall and summer, with higher concentrations at Yeon-dong. The RF at Yeon-dong (annual mean of up to $0.70W/m^2$ in 2015) was higher than that at Gosan (up to $0.46W/m^2$ in 2014), possibly because of higher $CO_2$ concentrations at Yeon-dong resulting from population growth and human activities (e.g., fossil fuel combustion). The highest monthly mean RFs at Yeon-dong (approximately $0.92W/m^2$) and Gosan ($0.52W/m^2$) were observed in spring 2015 (Yeon-dong) and spring 2013 (Gosan), whereas the lowest RFs (0.17 and $0.31W/m^2$, respectively) in fall 2011 (Yeon-dong) and summer in 2012 (Gosan).
Keywords
$CO_2$; Radiative forcing; Human activity; Urban center site; Jeju;
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