Geostationary Ocean Color Imager (GOCI, ), is the world's first geostationary orbit satellite image sensor in order to observe or monitor an ocean-color around the Korean Peninsula . The spatial resolution of GOCI is about 500m and the range of target area is about 2,500 km×2,500 km centered on Korean Peninsula. GOCI was loaded on Communication, Ocean, and Meteorological Satellite (COMS) of South Korea which was launched in June, 2010. It will be operated by Korea Ocean Satellite Center (KOSC) at Korea Institute of Ocean Science & Technology (KIOST), and capture the images of ocean-color around the Korean Peninsula 8 times a day for 7.7 years.
The ocean data products that can be derived from the measurements are mainly the chlorophyll concentration, the optical diffuse attenuation coefficients, the concentration of dissolved organic material or yellow substance, and the concentration of suspended particles in the near-surface zone of the sea. In operational oceanography, satellite derived data products are used in conjunction with numerical models and in situ measurements to provide forecasting and now casting of the ocean state. Such information is of genuine interest for many categories of users.
Vision and goals Detecting, monitoring and predicting short term biophysical phenomena Studies on biogeochemical variables and cycle Detecting, monitoring and predicting noxious or toxic algal blooms of notable extension Monitoring the health of marine ecosystem Coastal zone and resource management Producing an improved marine fisheries information to the fisherman communities Deriving Yellow dust and the land classified information
GOCI specification DescriptionSpecificationDetectorCMOS (2D, 1415×1432 pixels)Radiometric CalibrationSolar diffuser & DAMD(Diffuser Aging Monitoring Device)Resolution (GSD)500mTotal FOV16 slots, 5,300×5,300 PixelsCoverage2,500 km×2,500 kmLongitude128.2°EAltitude35,786 kmSNR> 1,000MTF> 0.3# of Bands8개 (6-Visible, 2-NIR)Spectral Coverage400~900 nm
GOCI bands Band(#)Central Wavelengths(nm)Bandwidth(nm)SNRTypePrimary Application1412201,000VisibleYellow substance and turbidity2443201,090VisibleChlorophyll absorption maximum3490201,170VisibleChlorophyll and other pigments4555201,070VisibleTurbidity, suspended sediment5660201,010VisibleAtmospheric correction for turbid water, Baseline of fluorescence signal, Chlorophyll, suspended sediment668010870Visiblefluorescence signal774520860NIRAtmospheric correction and baseline of fluorescence signal886540750NIRAtmospheric correction, vegetation, water vapor reference over the ocean
See also Ocean color Remote sensing Geostationary orbit
References https://web.archive.org/web/20130325103032/http://kosc.kordi.re.kr/oceansatellite/coms-goci/introduction.kosc Seongick Cho, Yu-Hwan Ahn, Joo-Hyung Ryu, Gm-Sil Kang, and Heong-Sik Youn, “Development of Geostationary Ocean Color Imager (GOCI),” Korean Journal of Remote Sensing, vol.26, no.2, 2010, pp. 157–165.
External links Korea Ocean Satellite Center (KOSC) Korea Institute of Ocean Science & Technology (KIOST)