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Geostationary Ocean Color Imager

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 [1][2]. 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

DescriptionSpecificationDetectorRadiometric CalibrationResolution (GSD)Total FOVCoverageLongitudeAltitudeSNRMTF# of BandsSpectral Coverage
CMOS (2D, 1415×1432 pixels)
Solar diffuser & DAMD(Diffuser Aging Monitoring Device)
500m
16 slots, 5,300×5,300 Pixels
2,500 km×2,500 km
128.2°E
35,786 km
1,000
0.3
8개 (6-Visible, 2-NIR)
400~900 nm

GOCI bands

Band(#)Central Wavelengths(nm)Bandwidth(nm)SNRTypePrimary Application12345678
412201,000VisibleYellow substance and turbidity
443201,090VisibleChlorophyll absorption maximum
490201,170VisibleChlorophyll and other pigments
555201,070VisibleTurbidity, suspended sediment
660201,010VisibleAtmospheric correction for turbid water, Baseline of fluorescence signal, Chlorophyll, suspended sediment
68010870Visiblefluorescence signal
74520860NIRAtmospheric correction and baseline of fluorescence signal
86540750NIRAtmospheric correction, vegetation, water vapor reference over the ocean

References

  1. https://web.archive.org/web/20130325103032/http://kosc.kordi.re.kr/oceansatellite/coms-goci/introduction.kosc
  2. 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.
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This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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