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MODIS 자료의 에어로졸의 광학적 두께를 이용한 제주지역의 지표면 PM<sub>2.5</sub> 농도 추정
김관철 ( Kwanchul Kim ),이다솜 ( Dasom Lee ),이광열 ( Kwang-yul Lee ),이권호 ( Kwonho Lee ),노영민 ( Youngmin Noh ) 대한원격탐사학회 2016 大韓遠隔探査學會誌 Vol.32 No.5
In this study, correlations between Moderate Resolution Imaging Spectroradiometer (MODIS) derived Aerosol Optical Depth (AOD) values and surface-level PM<sub>2.5</sub> concentrations at Gosan, Korea have been investigated. For this purpose, data from various instruments, such as satellite, sunphotometer, Optical Particle Counter (OPC), and Micro Pulse Lidar (MPL) on 14-24 October 2009 were used. Direct comparison between sunphotometer measured AOD and surface-level PM<sub>2.5</sub> concentrations showed a R<sup>2</sup> = 0.48. Since the AERONET L2.0 data has significant number of observations with high AOD values paired to low surface-level PM<sub>2.5</sub> values, which were believed to be the effect of thin cloud or Asian dust. Correlations between MODIS AOD and PM<sub>2.5</sub> concentration were increased by screening thin clouds and Asian dust cases by use of aerosol profile data on Micro-Pulse Lidar Network (MPLNet) as R<sup>2</sup> > 0.60. Our study clearly demonstrates that satellite derived AOD is a good surrogate for monitoring atmospheric PM concentration.