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Sea Surface Temperature Retrievals Optimized to the East Sea (Sea of Japan) using NOAA/AVHRR Data

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The accuracy of sea surface temperatures derived by NOAA/NESDIS (National Oceanic and Atmospheric Administration/National Environmental Satellite, Data, and Information Service) equations was tested by comparison with temperatures measured by thirty-four satellite-tracked ARGOS drifters deployed in the East Sea (Sea of Japan) from 1993 to 1997. Using an improved cloud-screening algorithm for the East Sea, we obtained 362 matchup points between the NOAA satellite data (NOAA-ll, NOAA-12, and NOAA-J4) and the drifter buoy temperatures. The split window technique of linear MCSST, non-linear CPSST and NLSST showed relatively small rms (root mean square) errors in the range of O.9°C to 1.2°C compared with the other window methods. However, a predominant trend was found that satellite-derived SSTs are underestimated by as much as −2°C in dry atmospheric conditions during winter, and overestimated in very humid conditions in summer by approximately 2°C. The characteristic trend was removed using a regression method, and the rms errors of newly-derived equations for the split window MCSST and the non-linear SST optimized to the East Sea were improved to within O.3°C ∼ O.9°C. The locally-optimized SSTs may be more important than the SSTs based on the global database, particularly in the inaccessible regions off North Korea and sea ice regions that are important for the critical research issue of cold water formation in the East Sea.
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Document Type: Research Article

Publication date: 1999-01-01

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  • The Marine Technology Society Journal is the flagship publication of the Marine Technology Society. It publishes the highest caliber, peer-reviewed papers on subjects of interest to the society: marine technology, ocean science, marine policy and education. The Journal is dedicated to publishing timely special issues on emerging ocean community concerns while also showcasing general interest and student-authored works.
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