Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Temporal and Spatial Variability of Chlorophyll a in the Northern East China Sea using Ocean Color Images in Summer

해색영상을 이용한 동중국해 북부해역 하계 클로로필 a의 시공간 분포

  • Kim, Sang-Woo (Ocean Research Team, National Fisheries Research and Development Institute) ;
  • Lim, Jin-Wook (Ocean Research Team, National Fisheries Research and Development Institute) ;
  • Jang, Lee-Hyun (Ocean Research Team, National Fisheries Research and Development Institute)
  • 김상우 (국립수산과학원 해양연구팀) ;
  • 임진욱 (국립수산과학원 해양연구팀) ;
  • 장이현 (국립수산과학원 해양연구팀)
  • Published : 2008.01.31
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Abstract

Temporal and spatial variabilities of chlorophyll a (Chl-a) in the northern East China Sea (ECS) are described, using both 8-day composite images of the SeaWiFS (Sea-viewing Wide Field-of-view Sensor) and in-situ data investigated in August and September during 2000-2005. Ocean color imagery showed that Chl-a concentrations on the continental shelf within the 50 m depth in the ECS were above 10 times higher than those of the Kuroshio area throughout the year. Higher concentrations (above $5mg/m^3$) of yearly mean Chl-a were observed along the western part of the shelf near the coast of China. The standard deviation also showed the characteristics of the spatial variability near $122-124^{\circ}E$, where the western region of the East China Sea was grater than that of the eastern region. Particularly the significant concentration of Chl-a, up to $9mg/m^3$, was found at the western part of $125^{\circ}E$ in the in-situ data of 2002. The higher Chl-a concentrations of in-situ data were consistent with low salinity waters of below 30 psu. It means that there were the close relationship between the horizontal distribution of Chl-a and low salinity water.

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References

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