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Title:
Decrease in the CO2 Uptake Capacity in an Ice-Free Arctic Ocean Basin
Authors:
Cai, Wei-Jun; Chen, Liqi; Chen, Baoshan; Gao, Zhongyong; Lee, Sang H.; Chen, Jianfang; Pierrot, Denis; Sullivan, Kevin; Wang, Yongchen; Hu, Xinping; Huang, Wei-Jen; Zhang, Yuanhui; Xu, Suqing; Murata, Akihiko; Grebmeier, Jacqueline M.; Jones, E. Peter; Zhang, Haisheng
Affiliation:
AA(Department of Marine Sciences, University of Georgia, Athens, GA 30602, USA.), AB(Key Lab of Global Change and Marine Atmospheric Chemistry, Third Institute of Oceanography, SOA, Xiamen 361005, China), AC(Department of Marine Sciences, University of Georgia, Athens, GA 30602, USA.), AD(Key Lab of Global Change and Marine Atmospheric Chemistry, Third Institute of Oceanography, SOA, Xiamen 361005, China), AE(Korea Polar Research Institute, Incheon 406-840, Republic of Korea), AF(Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, SOA, Hangzhou 310012, China), AG(Ocean Chemistry Division, National Oceanic and Atmospheric Administration-Atlantic Oceanographic and Meteorological Laboratory, Miami, FL 33149, USA.; Cooperative Institute of Marine and Atmospheric Sciences, University of Miami, Miami, FL 33149, USA.), AH(Ocean Chemistry Division, National Oceanic and Atmospheric Administration-Atlantic Oceanographic and Meteorological Laboratory, Miami, FL 33149, USA.; Cooperative Institute of Marine and Atmospheric Sciences, University of Miami, Miami, FL 33149, USA.), AI(Department of Marine Sciences, University of Georgia, Athens, GA 30602, USA.), AJ(Department of Marine Sciences, University of Georgia, Athens, GA 30602, USA.), AK(Department of Marine Sciences, University of Georgia, Athens, GA 30602, USA.), AL(Key Lab of Global Change and Marine Atmospheric Chemistry, Third Institute of Oceanography, SOA, Xiamen 361005, China), AM(Key Lab of Global Change and Marine Atmospheric Chemistry, Third Institute of Oceanography, SOA, Xiamen 361005, China), AN(Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Kanagawa 237-0061, Japan), AO(Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, MD 20688, USA.), AP(Department of Fisheries and Oceans, Ocean Sciences Division, Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada B2Y 4A2.), AQ(Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, SOA, Hangzhou 310012, China)
Publication:
Science, Volume 329, Issue 5991, pp. 556- (2010). (Sci Homepage)
Publication Date:
07/2010
Category:
ATMOS
Origin:
SCIENCE
Abstract Copyright:
(c) 2010: Science
DOI:
10.1126/science.1189338
Bibliographic Code:
2010Sci...329..556C

Abstract

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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