globalchange  > 气候变化事实与影响
DOI: 10.1002/2016GB005541
Scopus记录号: 2-s2.0-85017338740
论文题名:
Calculating surface ocean pCO2 from biogeochemical Argo floats equipped with pH: An uncertainty analysis
作者: Williams N; L; , Juranek L; W; , Feely R; A; , Johnson K; S; , Sarmiento J; L; , Talley L; D; , Dickson A; G; , Gray A; R; , Wanninkhof R; , Russell J; L; , Riser S; C; , Takeshita Y
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2017
卷: 31, 期:3
起始页码: 591
结束页码: 604
语种: 英语
英文关键词: air-sea carbon dioxide flux ; biogeochemical floats ; carbon budget ; pH sensor ; Southern Ocean
Scopus关键词: air-sea interaction ; alkalinity ; annual variation ; Argo ; backscatter ; biogeochemistry ; carbon budget ; carbon dioxide ; carbonate system ; fluorescence ; marine technology ; partial pressure ; pH ; sea surface ; surface flux ; uncertainty analysis ; Southern Ocean
英文摘要: More than 74 biogeochemical profiling floats that measure water column pH, oxygen, nitrate, fluorescence, and backscattering at 10 day intervals have been deployed throughout the Southern Ocean. Calculating the surface ocean partial pressure of carbon dioxide (pCO2sw) from float pH has uncertainty contributions from the pH sensor, the alkalinity estimate, and carbonate system equilibrium constants, resulting in a relative standard uncertainty in pCO2sw of 2.7% (or 11 µatm at pCO2sw of 400 µatm). The calculated pCO2sw from several floats spanning a range of oceanographic regimes are compared to existing climatologies. In some locations, such as the subantarctic zone, the float data closely match the climatologies, but in the polar Antarctic zone significantly higher pCO2sw are calculated in the wintertime implying a greater air-sea CO2 efflux estimate. Our results based on four representative floats suggest that despite their uncertainty relative to direct measurements, the float data can be used to improve estimates for air-sea carbon flux, as well as to increase knowledge of spatial, seasonal, and interannual variability in this flux. ©2017. 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/77760
Appears in Collections:气候变化事实与影响

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作者单位: College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States; Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, WA, United States; Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States; Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, United States; Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States; Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration, Miami, FL, United States; Department of Geosciences, University of Arizona, Tucson, AZ, United States; School of Oceanography, University of Washington, Seattle, WA, United States

Recommended Citation:
Williams N,L,, Juranek L,et al. Calculating surface ocean pCO2 from biogeochemical Argo floats equipped with pH: An uncertainty analysis[J]. Global Biogeochemical Cycles,2017-01-01,31(3)
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