globalchange  > 气候变化事实与影响
DOI: 10.1002/gbc.20081
Scopus记录号: 2-s2.0-84883709743
论文题名:
Prevalence of strong vertical CO2 and O2 variability in the top meters of the ocean
作者: Calleja M; L; , Duarte C; M; , Álvarez M; , Vaquer-Sunyer R; , Agustí S; , Herndl G; J
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期:3
起始页码: 941
结束页码: 949
语种: 英语
英文关键词: oceans ; oxygen concentration ; pCO2 variability ; temperature ; top meters
Scopus关键词: Diffusive boundary layers ; Driving forces ; Homogeneous distribution ; oceans ; Oxygen concentrations ; pCO2 variability ; Surface seawater ; Vertical profile ; Bioactivity ; Boundary layers ; Oceanography ; Temperature ; Carbon dioxide ; air-sea interaction ; biogeochemistry ; boundary layer ; carbon dioxide ; database ; oxygen ; partial pressure ; seawater ; temperature gradient ; vertical profile
英文摘要: The gradient in the partial pressure of carbon dioxide (pCO2) across the air-sea boundary layer is the main driving force for the air-sea CO2 flux. Global data bases for surface seawater pCO2 are actually based on pCO2 measurements from several meters below the sea surface, assuming a homogeneous distribution between the diffusive boundary layer and the upper top meters of the ocean. Compiling vertical profiles of pCO2, temperature, and dissolved oxygen in the upper 5-8 m of the ocean from different biogeographical areas, we detected a mean difference between the boundary layer and 5 m pCO2 of 13 ± 1 μatm. Temperature gradients accounted for only 11% of this pCO2 gradient in the top meters of the ocean; thus, pointing to a heterogeneous biological activity underneath the air-sea boundary layer as the main factor controlling the top meters pCO2 variability. Observations of pCO2 just beneath the air-sea boundary layer should be further investigated in order to estimate possible biases in calculating global air-sea CO2 fluxes. Key Points High pCO2 vertical variability within the upper meters of the ocean surfaceOnly 11% of pCO2 variability appears to be explained by temperature changesBiological processes exert a control in the observed CO2 vertical heterogeneity ©2013. 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/77574
Appears in Collections:气候变化事实与影响

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作者单位: Department of Global Change Research, Instituto Mediterráneo de Estudios Avanzados, CSIC-UIB, Esporles, Spain; Instituto Andaluz de Ciencias de la Tierra, CSIC-UGR, Avda. de las Palmeras 4, 18100 Armilla, Granada, Spain; UWA Oceans Institute, University of Western Australia, Crawley, WA, Australia; Instituto Español de Oceanografía, Centro de A Coruña, Coruña, Spain; Department of Geology, Lund University, Lund, Sweden; Department of Marine Biology, University of Vienna, Vienna, Austria; Department of Biological Oceanography, Royal Netherlands Institute for Sea Research, Den Burg, Netherlands

Recommended Citation:
Calleja M,L,, Duarte C,et al. Prevalence of strong vertical CO2 and O2 variability in the top meters of the ocean[J]. Global Biogeochemical Cycles,2013-01-01,27(3)
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