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원격탐사자료와 이어도기지 해양관측자료를 이용한 상호 보정
김창오 ( Chang Oh Kim ),심재설 ( Jae SeoI Shim ),황종선 ( Jong Sun Hwang ),이재학 ( Jae Hak Lee ),김수정 ( Soo Jung Kim ),김정우 ( Jeong Woo Kim ) 대한원격탐사학회 2005 대한원격탐사학회지 Vol.21 No.2
Oceanographic measurements from Ieodo Ocean Research Station and its vicinity were compared for assessment and mutually adjusted with satellite data. From the Topex/Poseidon and ERS-1/2 radar altimeter and scatterometer data, sea surface height, wind speed and direction were extracted and analyzed. Shipborne wind direction data acquired in June 1995 show good coherence with the satellite data, while sea surface height and wind speed show differences, possibly resulting from the distance between the measurement points. This can be improved by analyzing more satellite data or using other available shipborne data. The recent 3 months of Ieodo Station data between December 2004 and February 2005 were also analyzed and compared with the satellite data. The Ieodo Station data were found to have considerable gaps during the period as well as seriously biased particular when the data were averaged with some abnormal data. The Ieodo Station and satellite data were then mutually adjusted on the basis of their statistics. Ieodo Station oceanographic measurements are very efficient for ground-truthing of satellite data because they are stationary and the station is located far from the coast. On the other hand, the satellite measurements are the only data to fill up gaps and adjust biases of the Ieodo Station data.
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