위성의 해수면온도 자료를 이용한 냉수대 영향에 대한 분석

Abstract

This study investigates various environment change during cold water events in the summer season in the east sea. Cold water in coastal waters refers to areas whose average SST is 5°C colder than surrounding SST. When Cold water expands and changes its extract direction, NFRDI(National Fisheries Research & Development Institute) issues an upwelling cold water warming. This study was performed based on the various environment factors using satellite data and in-situ data. The period of the study is from summer to fall of 2011~2015. We used NOAA of max daily composite satellite data for SST analysis, the Geostationary Ocean color Imager (GOCI) level2 mean daily composite data for analysis of Chl-a and ocean current, wind of in situ. We calculated the cold water area when it is 5°C colder than in SST data. The spatial resolution of NOAA satellite is 1.1km, and data are acquired 1~2 times in one day. GOCI nominal spatial resolution is 500m,and re acquired data 8 times in one day, In-situ data used each time in one day. The appearing season mainly begins at the end of June, repeats the cycle of creation and extinction, and Cold water ends at the end of August. We think that chl-a increased from September to November as it still maintained some influence of cold water after summer season in the cold water area.We compared SST , surface currents, wind vector for analysis of environment change.Data showed simind changes its extract direction, NFRDI(National Fisheries Research & Development Institute) issues an upwelling cold water warming. This study was performed based on the various environment factors using satellite data and in-situ data. The period of the study is from summer to fall of 2011~2015. We used NOAA of max daily composite satellite data for SST analysis, the Geostationary Ocean color Imager (GOCI) level2 mean daily composite data for analysis of Chl-a and ocean current, wind of in situ. We calculated the cold water area when it is 5°C colder than in SST data. The spatial resolution of NOAA satellite is 1.1km, and data are acquired 1~2 times in one day. GOCI nominal spatial resolution is 500m,and re acquired data 8 times in one day, In-situ data used each time in one day. The appearing season mainly begins at the end of June, repeats the cycle of creation and extinction, and Cold water ends at the end of August. We think that chl-a increased from September to November as it still maintained some influence of cold water after summer season in the cold water area.We compared SST , surface currents, wind vector for analysis of environment change.Data showed simi