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Estimating Photosynthetically Available Radiation from Geostationary Ocean Color Imager (GOCI) Data
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  • Journal title : Korean Journal of Remote Sensing
  • Volume 32, Issue 3,  2016, pp.253-262
  • Publisher : The Korean Society of Remote Sensing
  • DOI : 10.7780/kjrs.2016.32.3.5
 Title & Authors
Estimating Photosynthetically Available Radiation from Geostationary Ocean Color Imager (GOCI) Data
Kim, Jihye; Yang, Hyun; Choi, Jong-Kuk; Moon, Jeong-Eon; Frouin, Robert;
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Here, we estimated daily Photosynthetically Available Radiation (PAR) from Geostationary Ocean Colour Imager (GOCI) and compared it with daily PAR derived from polar-orbiting MODIS images. GOCI-based PAR was also validated with in-situ measurements from ocean research station, Socheongcho. GOCI PAR showed similar patterns with in-situ measurements for both the clear-sky and cloudy day, whereas MODIS PAR showed irregular patterns at cloudy conditions in some areas where PAR could not be derived due to the clouds of sunglint. GOCI PAR had shown a constant difference with the in-situ measurements, which was corrected using the in-situ measurements obtained on the days of clear-sky conditions at Socheongcho station. After the corrections, GOCI PAR showed a good agreement excepting on the days with so thick cloud that the sensor was optically saturated. This study revealed that GOCI can estimate effectively the daily PAR with its advantages of acquiring data more frequently, eight times a day at an hourly interval in daytime, than other polar orbit ocean colour satellites, which can reduce the uncertainties induced by the existence and movement of the cloud and insufficient images to map the daily PAR at the seas around Korean peninsula.
Photosynthetically available radiation;GOCI;MODIS;Seas around Korean peninsula;
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