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Advances in Earth Science  2000, Vol. 15 Issue (5): 559-564    DOI: 10.11867/j.issn.1001-8166.2000.05.0559
ZHANG Yuan-hui, WANG Wei-qiang, CHEN Li-qi
①Third Institute of Oceanography,SOA,Xiamen 361005,China;②Chinese Arctic and Antarctic Administration,SOA,Beijing 100860,China
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The oceans are a huge reservoir for CO2,containing 50 times more than the atmosphere and 20 times more than the biosphere,furthermore,they play an important role in regulating the levels of atmospheric CO2,and hence global climate.The CO2 between the oceans and the atmosphere is out of equilibrium ,the equatorial Pacific and Atlantic oceans are supersaturated with CO2 and hence are strong CO2 source areas,on the other hand,the Southern and the North Atlantic oceans are strong sinks of atmospheric CO2.The oceans have taken up large amounts of anthropogenic CO2,models of global carbon cycle yield a mean oceanic CO2 uptake of 2.0 Gt C/a.The oceans' capacity to take up CO2 depends laregely on the effect of the biological pump and the dynamics of ocean circulation.Future concentration of atmospheric CO2 is hard to predict because of our incomplete understanding of how the oceans would respond to the global warming.To improve our ability to estimate future CO2 concentration,intense further research on oceanic CO2 is necessary.

Key words:  Oceanic CO2      Air-sea flux      Biological pump      Ocean circulation      Marine ecosystem.     
Received:  13 October 1999      Published:  01 October 2000
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ZHANG Yuan-hui, WANG Wei-qiang, CHEN Li-qi. ADVANCES IN STUDIES OF OCEANIC CARBON DIOXIDE. Advances in Earth Science, 2000, 15(5): 559-564.

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