globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2695
论文题名:
Acidification of East Siberian Arctic Shelf waters through addition of freshwater and terrestrial carbon
作者: Semiletov I.; Pipko I.; Gustafsson O.; Anderson L.G.; Sergienko V.; Pugach S.; Dudarev O.; Charkin A.; Gukov A.; Bröder L.; Andersson A.; Spivak E.; Shakhova N.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期:5
起始页码: 361
结束页码: 365
语种: 英语
Scopus关键词: acidification ; anthropogenic source ; aragonite ; atmospheric deposition ; carbon cycle ; carbon dioxide enrichment ; concentration (composition) ; discharge ; dissolved inorganic carbon ; freshwater input ; organic matter ; terrestrial deposit ; Arctic Ocean ; Siberian Shelf
英文摘要: Ocean acidification affects marine ecosystems and carbon cycling, and is considered a direct effect of anthropogenic carbon dioxide uptake from the atmosphere. Accumulation of atmospheric CO2 in ocean surface waters is predicted to make the ocean twice as acidic by the end of this century. The Arctic Ocean is particularly sensitive to ocean acidification because more CO2 can dissolve in cold water. Here we present observations of the chemical and physical characteristics of East Siberian Arctic Shelf waters from 1999, 2000-2005, 2008 and 2011, and find extreme aragonite undersaturation that reflects acidity levels in excess of those projected in this region for 2100. Dissolved inorganic carbon isotopic data and Markov chain Monte Carlo simulations of water sources using salinity and Î 18 O data suggest that the persistent acidification is driven by the degradation of terrestrial organic matter and discharge of Arctic river water with elevated CO2 concentrations, rather than by uptake of atmospheric CO2. We suggest that East Siberian Arctic Shelf waters may become more acidic if thawing permafrost leads to enhanced terrestrial organic carbon inputs and if freshwater additions continue to increase, which may affect their efficiency as a source of CO2. © 2016 Macmillan Publishers Limited. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106017
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: University of Alaska Fairbanks, International Arctic Research Center, Akasofu Building, Fairbanks, AR, United States; Tomsk Polytechnic University, 30 Prospect Lenina, Tomsk, Russian Federation; Russian Academy of Sciences, Pacific Oceanological Institute, 43 Baltiiskaya Street, Vladivostok, Russian Federation; Stockholm University, Department of Environmental Science and Analytical Chemistry, Bolin Centre for Climate Research, Stockholm, Sweden; University of Gothenburg, Department of Marine Sciences, Göteborg, Sweden; Russian Academy of Sciences, Institute of Chemistry, 159, 100-Let Vladivostok Prospect, Vladivostok, Russian Federation; Tiksi Hydrometeorological Service, Tiksi, Yakutia (Sakha), Russian Federation

Recommended Citation:
Semiletov I.,Pipko I.,Gustafsson O.,et al. Acidification of East Siberian Arctic Shelf waters through addition of freshwater and terrestrial carbon[J]. Nature Geoscience,2016-01-01,9(5)
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