期刊
SCIENCE
卷 329, 期 5991, 页码 556-559出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1189338
关键词
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资金
- Ministry of Science and Technology of China [2009DFA22920]
- Natural Science Foundation of China [40531007]
- U.S. National Oceanic and Atmospheric Administration [NA05OAR4311161, NA09OAR4310078]
- NSF [ARC-0909330]
- Korean Arctic Research project [PM09020]
- Chinese Arctic and Antarctic Administration
- Polar Research Institute of China
- Korea Institute of Marine Science & Technology Promotion (KIMST) [20002004] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Division Of Polar Programs
- Directorate For Geosciences [0909330] Funding Source: National Science Foundation
It has been predicted that the Arctic Ocean will sequester much greater amounts of carbon dioxide (CO2) from the atmosphere as a result of sea ice melt and increasing primary productivity. However, this prediction was made on the basis of observations from either highly productive ocean margins or ice-covered basins before the recent major ice retreat. We report here a high-resolution survey of sea-surface CO2 concentration across the Canada Basin, showing a great increase relative to earlier observations. Rapid CO2 invasion from the atmosphere and low biological CO2 drawdown are the main causes for the higher CO2, which also acts as a barrier to further CO2 invasion. Contrary to the current view, we predict that the Arctic Ocean basin will not become a large atmospheric CO2 sink under ice-free conditions.
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