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http://dx.doi.org/10.4217/OPR.2011.33.4.447

Assesment of pCO2 in the Yellow and East China Sea Using an Earth System Model  

Park, Young-Gyu (Climate Change & Coastal Disaster Research Department, KORDI)
Choi, Sang-Hwa (Ocean Data and Information Unit, KORDI)
Kim, Cheol-Ho (Climate Change & Coastal Disaster Research Department, KORDI)
Publication Information
Ocean and Polar Research / v.33, no.4, 2011 , pp. 447-455 More about this Journal
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
East China Sea; biogeochemical modeling; $pCO_2$;
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