Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Assesment of pCO2 in the Yellow and East China Sea Using an Earth System Model

지구시스템모형을 이용한 황동중국해 이산화탄소분압 분포 특성 평가

  • 박영규 (한국해양연구원 기후.연안재해연구부) ;
  • 최상화 (한국해양연구원 해양자료정보사업단) ;
  • 김철호 (한국해양연구원 기후.연안재해연구부)
  • Received : 2011.10.28
  • Accepted : 2011.12.02
  • Published : 2011.12.30
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Abstract

Using results from an earth system model, the distribution of partial pressure of $CO_2$ ($pCO_2$) in surface seawater over the East China Sea is investigated. In this area $pCO_2$ shows minimum along the edge of the continental break along the path of the Taiwan-Tsushima Current System. Apparently modelled chlorophyll is also great along the current but the maximum of the chlorophyll and the minimum of $pCO_2$ do not coincide suggesting that the primary production is not the main cause of the $pCO_2$ minimum. As we move toward the Yellow Sea from the Kuroshio area the temperature decreases so that the $pCO_2$ becomes smaller. If we move further toward the Yellow Sea beyond the Taiwan-Tsushima Current System, alkalinity starts to drop substantially to intensify $pCO_2$ while overcoming the effect of decreasing temperature and salinity. Thus $pCO_2$ minimum occurs along the Taiwan-Tsushima Current System. Of course, the primary production lower $pCO_2$ during spring when it is high but the effect is local. Near the Yangtze river mouth and northeastern corner of the Yellow Sea the fresh water input is large enough and dissolved inorganic carbon (DIC) becomes low enough so that $pCO_2$ becomes lower again.

Keywords

References

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