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Decadal climatological trends of aerosol optical parameters over three different environments in South Korea

Panicker, AS and Lee, DI and Kumkar, YV and Kim, D and Maki, M and Uyeda, H (2013) Decadal climatological trends of aerosol optical parameters over three different environments in South Korea. International Journal of Climatology, 33 (8). pp. 1909-1916.

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Decadal climatology of aerosol optical parameters derived from Moderate Resolution Imaging Spectroradiometer (MODIS) on board Terra satellite has been analysed during past decade (February 2000 to February 2010) over three different environments in South Korea. Seoul, a continental urban station showed a significant decadal decrease of around 22 in aerosol optical depth (AOD) at 550 nm during observational period. The corresponding decrease in AOD found to be 18.7 over Busan, a coastal station. However Jeju, a volcanically sedimented island station in Korea showed negligible changes in AOD (1.4). Fine mode fraction (FMF) and Angstrom exponent (ANG) parameters also showed a significant decadal reduction, indicating the decrease in fine mode aerosols, which are majorly produced due to anthropogenic activities in land areas. On analysing the decadal trends in seasonal climatology, it is found that aerosol parameters in general were showing a decreasing trend in different seasons except during spring. The decadal trend in meteorological parameters did not show a perfect alignment with aerosol trends. This suggests that the decadal decrease in aerosols could be mainly attributed to reduction in anthropogenic aerosol emissions. The surface temperature over the stations showed a significant increase of 8 to 11. This study suggests that, in spite of positive effects in pollution perspective, the reduced AOD may in part contribute the increasing trend of surface temperature.

Item Type: Article
Additional Information: Copyrights of this article belongs to Royal Meteorological Society.
Uncontrolled Keywords: Aerosol optical depths; Aerosol optical parameters; Angstrom exponent; Anthropogenic activity; AOD; Fine mode fraction; Meteorological parameters; Moderate resolution imaging spectroradiometer, Aerosols; Atmospheric aerosols; Atmospheric temperature; Climatology; Radiometers; Satellite imagery; Surface properties, Optical variables control, aerosol property; air temperature; decadal variation; human activity; MODIS; optical depth; parameterization; seasonal variation; Terra (satellite); trend analysis; urban atmosphere, Pusan Pusan (ADS); Pusan South Korea; South Korea
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 13 Jun 2014 05:39
Last Modified: 13 Jun 2014 05:39

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