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• W2010599897 abstract "동해에서 CDOM의 광학적 특성과 순환을 이해하기 위하여 MODIS의 원격탐사반사도(<TEX>$R_{rs}$</TEX>)를 이용한 기존의 CDOM 흡광계수 추정 알고리즘들(Semi-Algorithms (3개), Empirical-Algorithms (3개))을 현장관측 자료와 비교 평가하였다. 2009년부터 2011년까지 총 7번의 현장 관측 자료는 연안 해역에서부터 외양의 다양한 해양환경을 포함하고 있다. 본 연구 결과, 동해에서 Quasi-Analytical Algorithm (QAA_v5) 이 현장 <TEX>$a_{CDOM}$</TEX>(412) 값을 가장 유사하게 추정하였다. Quasi-Analytical Algorithm (QAA_v5) 알고리즘을 기준으로 Semi-analytical 알고리즘은 과소추정하는 경향을 보였다. 그러나 Empirical 알고리즘은 과대추정하는 경향을 보였다. <TEX>$a_{CDOM}$</TEX>(412)의 값이 높은 곳에서 위성관측 엽록소-a (Chlorophyll-a)의 값도 높았다. 이 결과는 CDOM이 엽록소-a의 함량 추정에 영향을 줄 수 있다는 가능성을 제시한다. 본 연구 결과는 세계최초 정지궤도 해색위성인 GOCI의 CDOM 알고리즘을 개선하는데 기초자료로 활용될 것이다. Colored Dissolved Organic Matter (CDOM) is one of the important components of optical properties of seawater to determine ecosystem dynamics in a given marine area. The optical characteristics of CDOM may depend on the various ecosystem and environmental variables in the sea and those variables may vary region to region. Therefore, the retrieval algorithm for determining light absorption coefficient of CDOM (<TEX>$a_{CDOM}$</TEX>) using satellite remote sensing reflectance (<TEX>$R_{rs}$</TEX>) developed from other region may not be directly applicable to the other region, and it must be validated using an in-situ ground-truth observation. We have tested 6 known CDOM algorithms (three Semi-analytical and three Empirical CDOM algorithms) developed from other regions of the world ocean with laboratory determined in-situ values for the East Sea using field data collected during seven oceanographic cruises in the period of 2009~2011. Our field measurements extended from the coastal waters to the open oceanic type CASE-1 Waters. Our study showed that Quasi-Analytical Algorithm (QAA_v5) derived <TEX>$a_{CDOM}$</TEX>(412) appears to match in-situ <TEX>$a_{CDOM}$</TEX>(412) values statistically. Semi-analytical algorithms appeared to underestimate and empirical ones overestimated <TEX>$a_{CDOM}$</TEX> in the East Sea. <TEX>$a_{CDOM}$</TEX>(412) value was found to be relatively high in the relatively high satellite derived-chlorophyll-a area. <TEX>$a_{CDOM}$</TEX>(412) value appears to be influenced by the amount of chlorophyll-a in seawater. The outcome of this work may be referenced to develop <TEX>$a_{CDOM}$</TEX> algorithm for the new Korean Geostationary Ocean Color Imager (GOCI)." @default.
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• W2010599897 date "2012-08-30" @default.
• W2010599897 modified "2023-10-05" @default.
• W2010599897 title "Verification of CDOM Algorithms Based on Ocean Color Remote Sensing Data in the East Sea" @default.
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• W2010599897 doi "https://doi.org/10.7780/kjrs.2012.28.4.6" @default.
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