globalchange  > 气候变化事实与影响
DOI: 10.1002/2015GB005153
Scopus记录号: 2-s2.0-84941877239
论文题名:
Sea-air CO<inf>2</inf> exchange in the western Arctic coastal ocean
作者: Evans W; , Mathis J; T; , Cross J; N; , Bates N; R; , Frey K; E; , Else B; G; T; , Papkyriakou T; N; , Degrandpre M; D; , Islam F; , Cai W; -J; , Chen B; , Yamamoto-Kawai M; , Carmack E; , Williams W; J; , Takahashi T
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期:8
起始页码: 1190
结束页码: 1209
语种: 英语
英文关键词: Arctic ; carbon uptake ; coastal ocean ; high latitude ; sea-air CO2 fluxes
Scopus关键词: air-sea interaction ; biogeochemical cycle ; biological uptake ; carbon dioxide ; ice cover ; partial pressure ; spatiotemporal analysis ; wind velocity ; Arctic Ocean
英文摘要: The biogeochemical seascape of the western Arctic coastal ocean is in rapid transition. Changes in sea ice cover will be accompanied by alterations in sea-air carbon dioxide (CO2) exchange, of which the latter has been difficult to constrain owing to sparse temporal and spatial data sets. Previous assessments of sea-air CO2 flux have targeted specific subregional areas of the western Arctic coastal ocean. Here a holistic approach is taken to determine the net sea-air CO2 flux over this broad region. We compiled and analyzed an extensive data set of nearly 600,000 surface seawater CO2 partial pressure (pCO2) measurements spanning 2003 through 2014. Using space-time colocated, reconstructed atmospheric pCO2 values coupled with the seawater pCO2 data set, monthly climatologies of sea-air pCO2 differences (ΔpCO2) were created on a 0.2°latitude × 0.5°longitude grid. Sea-air CO2 fluxes were computed using the ΔpCO2 grid and gas transfer rates calculated from climatology of wind speed second moments. Fluxes were calculated with and without the presence of sea ice, treating sea ice as an imperfect barrier to gas exchange. This allowed for carbon uptake by the western Arctic coastal ocean to be assessed under existing and reduced sea ice cover conditions, in which carbon uptake increased 30% over the current 10.9 ± 5.7 Tg C (1 Tg = 1012 g) yr-1 of sea ice-adjusted exchange in the region. This assessment extends beyond previous subregional estimates in the region in an all-inclusive manner and points to key unresolved aspects that must be targeted by future research. ©2015. American Geophysical Union. 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/77952
Appears in Collections:气候变化事实与影响

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作者单位: National Oceanic and Atmospheric Administration, Pacific Marine Environmental Laboratory, Seattle, Washington, United States; Ocean Acidification Research Center, School of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, AK, United States; Bermuda Institute of Ocean Sciences, Ferry Reach, Bermuda; Graduate School of Geography, Clark University, Worcester, MA, United States; Department of Geography, University of Calgary, Calgary, Alberta, Canada; Department of Environment and Geography, University of Manitoba, Winnipeg, MB, Canada; Department of Chemistry and Biochemistry, University of Montana, Missoula, Montana, United States; College of Earth, Ocean, and Environment, University of Delaware, Newark, Delaware, United States; Department of Marine Sciences, University of Georgia, Athens, GA, United States; Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan; Fisheries and Oceans Canada, Institute of Ocean Sciences, Sidney, BC, Canada; Lamont-Doherty Earth Observatory, Columbia University, New York, NY, United States

Recommended Citation:
Evans W,, Mathis J,T,et al. Sea-air CO<inf>2</inf> exchange in the western Arctic coastal ocean[J]. Global Biogeochemical Cycles,2015-01-01,29(8)
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