Chen-Tung Arthur Chen1, Andrey Andreev2, Kyung-Ryul Kim3 and Michiyo Yamamoto4
1Institute of Marine Geology and Chemistry, National Sun Yat-Sen University, Kaohsiung 804, Taiwan, R.O.C., Tel: 886-7-525-5146, Fax: 886-7-525-5346, E-mail: email@example.com, 2Pacific Oceanological Institute Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia 3Chemical Oceanography & Global Environmental Chemistry Laboratory, Department of Oceanography, Seoul National University, Shilim-Dong, Gwanak-Gu, Seoul 151-742, Seoul Korea and 4IRAC 207 D, 930 Koyukuk Drive, P.O. Box 757335, Fairbanks, Alaska 99775-733, USA
Roles of continental shelves and seas in the North Pacific
Most marginal seas in the North Pacific are undersaturated with respect to atmospheric CO2 in the surface water and absorb CO2 at an average rate of 1.1 mol C m-2 yr-1 but release N2 at an average rate of 0.07 mol N m-2 yr-1. Further, it is estimated that seawater in the marginal seas in the North Pacific alone may have taken up 1.3 0.3 Gt (1015 g) of excess carbon, including 0.21 0.05 Gt for the Bering Sea, 0.18 0.08 Gt for the Sea of Okhotsk; 0.31 0.05 Gt for the Sea of Japan; 0.07 0.02 Gt for the East China Sea and Yellow Sea; 0.80 0.15 Gt for the South China Sea; and 0.015 0.005 Gt for the Gulf of California. More importantly, high latitude marginal seas such as the Sea of Okhotsk or the Bering Sea may act as conveyer belts in exporting 0.1 0.08 Gt C excess CO2 into the North Pacific Intermediate Water per year. As a final note, the Sea of Japan has started to show responses to global warming and an anoxic condition may develop as early as 2200 AD.