Korean Journal of Remote Sensing (대한원격탐사학회지)

Korean Society of Remote Sensing (대한원격탐사학회)
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Comparison of Estimation Methods of Primary Production of the Yellow Sea for Geostationary Ocean Color Imager (GOCI) Data

정지궤도 해색탑재체(GOCI) 자료 활용을 위한 황해의 일차생산력 추정방법 비교

  • Park, Ji-Soo (Marine Living Resources Research Department, KORDI) ;
  • Yoo, Sin-Jae (Marine Living Resources Research Department, KORDI)
  • 박지수 (한국해양연구원 해양생물자원연구본부) ;
  • 유신재 (한국해양연구원 해양생물자원연구본부)
  • Received : 2010.04.01
  • Accepted : 2010.04.15
  • Published : 2010.04.30
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Abstract

To estimate marine primary production, satellite data are essential for providing much better spatial and temporal resolutions. However, primary production estimation for turbid coastal water such as the Yellow Sea still needs much improvement. Here we evaluate currently available methods of primary production estimation in the Yellow Sea. We focus on comparison of eight combinations from four chlorophyll-a algorithms and two primary production algorithms of the Yellow Sea. Estimated primary production by the eight combinations ranged from 96.5 to $610.2\;gC\;m^{-2}\;yr^{-1}$ in the central region of the Yellow Sea. The new chlorophyll algorithms (presently under development by Korea, China, and Japan scientists) are expected to improve the retrieval of chlorophyll-a in turbid regions compared to the standard algorithm but there are certain unresolved problems. The new algorithm for primary production (which uses adjusted physiological parameters with in-situ data) also needs further improvement.

해양의 일차생산 측정에 있어 인공위성자료의 활용은 연구선 등을 활용한 기존 조사방법이 갖고 있는 시 공간상의 제한을 많이 개선할 수 있다. 하지만, 황해와 같이 탁한 해역에서의 일차생산 추정은 해수의 광학특성에 의해 여전히 많은 문제점을 가지고 있다. 본 연구에서는 현재 수준에서 가용한 황해의 일차 생산 추정방법들을 비교 평가하였다. 즉, 네 가지의 엽록소-a 추정 알고리듬과 두 가지의 일차생산 추정 알고리듬을 사용하여 각기 다른 조합들이 일차생산 추정에 있어 어떤 차이를 보이는지 알아보았다. 여덟가지 조합에 의해 추정된 황해 중부의 일차생산력은 96.5 에서 $610.2\;gC\;m^{-2}\;yr^{-1}$의 범위값을 가졌다. 최근 한 중 일 연구자들에 의해 공동으로 개발 중인 새로운 엽록소 알고리듬은 탁한 해역에서 표준알고리듬이 잘 맞지 않는 문제를 일부 해결했으나 여전히 해결해야 할 문제를 남겼다. 실측 광합성 매개변수를 새로 적용한 일차생산 추정 알고리듬 또한 개선이 필요하다.

Keywords

Acknowledgement

Grant : 정지궤도 해색위성 활용연구지원

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