SPATIO-TEMPORAL MODELING OF AEROSOL OPTICAL THICKNESS OVER THE GOCI LAND AREA FOR THE ATMOSPHERIC CORRECTION OF LAND PRODUCTS

초록

GOCI is the world’s first geostationary ocean colour sensor developed for continuous monitoring of oceanic environment over Northeast Asia. GOCI takes eight hourly images during a day from 09:00 AM to 16:00 PM local time. It has eight spectral bands from visible to NIR similar to other ocean colour sensor such as SeaWiFS. GOCI is proper at regional scale monitoring for spatial resolution of 500m, while other geostationary satellite sensor has coarse spatial resolution about 3~5km. Although, GOCI is mainly designed for oceanic monitoring, but it also has great potential on land surface monitoring due to its high temporal and suitable spatial and spectral conditions. The total land area is about 38% of the full coverage of GOCI. Since April, 2011 with the launch of GOCI, The KIOST have provided radiometric calibrated and geometric corrected level 1B at-sensor radiance and level 2 data related to ocean information. However, land products such as surface reflectance were not provided yet.