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http://dx.doi.org/10.14191/Atmos.2017.27.4.423

Influence of Greenhouse Gases on Radiative Forcing at Urban Center and Background Sites on Jeju Island Using the Atmospheric Radiative Transfer Model  

Lee, Soo-Jeong (Eco Brain Co., Ltd.)
Song, Sang-Keun (Department of Earth and Marine Sciences, Jeju National University)
Han, Seung-Beom (Department of Earth and Marine Sciences, Jeju National University)
Publication Information
Atmosphere / v.27, no.4, 2017 , pp. 423-433 More about this Journal
Abstract
The spatial and temporal variations in radiative forcing (RF) and mean temperature changes of greenhouse gases (GHGs), such as $CO_2$, $CH_4$, and $N_2O$, were analyzed at urban center (Yeon-dong) and background sites (Gosan) on Jeju Island during 2010~2015, based on a modeling approach (i.e., radiative transfer model). Overall, the RFs and mean temperature changes of $CO_2$ at Yeon-dong during most years (except for 2014) were estimated to be higher than those at Gosan. This might be possibly because of its higher concentrations at Yeon-dong due to relatively large energy consumption and small photosynthesis and also the difference in radiation flux due to the different input condition (e.g., local time and geographic coordinates of solar zenith angle) in the model. The annual mean RFs and temperature changes of $CO_2$ were highest in 2015 ($2.41Wm^{-2}$ and 1.76 K) at Yeon-dong and in 2013 ($2.22Wm^{-2}$ and 1.62 K) at Gosan (except for 2010 and 2011). The maximum monthly/seasonal mean RFs and temperature changes of $CO_2$ occurred in spring (Mar. and/or Apr.) or winter (Jan. and/or Feb.) at the two sites during the study period, whereas the minimum RFs and temperature changes in summer (Jun.-Aug.). In the case of $CH_4$ and $N_2O$, their impacts on the RF and mean temperature changes were very small (an order of magnitude lower) compared to $CO_2$. The spatio-temporal differences in these RF values of GHGs might primarily depend on the atmospheric profile (e.g., ozone profile), surface albedo, local time (or solar zenith angle), as well as their mass concentrations.
Keywords
Greenhouse gases; radiative forcing; urban center and background sites; Jeju; radiative transfer model;
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Times Cited By KSCI : 3  (Citation Analysis)
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