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    Evaluation of the National Oceanic and Atmospheric Administration/Coupled-Ocean Atmospheric Response Experiment (NOAA/COARE) air-sea gas transfer parameterization using GasEx data

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    2003JC001831.pdf (268.7Kb)
    Date
    2004-07-16
    Author
    Hare, Jeffrey E.  Concept link
    Fairall, Christopher W.  Concept link
    McGillis, Wade R.  Concept link
    Edson, James B.  Concept link
    Ward, Brian  Concept link
    Wanninkhof, Rik  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3579
    As published
    https://doi.org/10.1029/2003JC001831
    DOI
    10.1029/2003JC001831
    Keyword
     Air-sea interaction; Air-sea flux; Air-gas transfer 
    Abstract
    During the two recent GasEx field experiments, direct covariance measurements of air-sea carbon dioxide fluxes were obtained over the open ocean. Concurrently, the National Oceanic and Atmospheric Administration/Coupled-Ocean Atmospheric Response Experiment air-sea gas transfer parameterization was developed to predict gas transfer velocities from measurements of the bulk state of the sea surface and atmosphere. The model output is combined with measurements of the mean air and sea surface carbon dioxide fugacities to provide estimates of the air-sea CO2 flux, and the model is then tuned to the GasEx-1998 data set. Because of differences in the local environment and possibly because of weaknesses in the model, some discrepancies are observed between the predicted fluxes from the GasEx-1998 and GasEx-2001 cases. To provide an estimate of the contribution to the air-sea flux of gas due to wave-breaking processes, the whitecap and bubble parameterizations are removed from the model output. These results show that moderate (approximately 15 m s−1) wind speed breaking wave gas transfer processes account for a fourfold increase in the flux over the modeled interfacial processes.
    Description
    Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 109 (2004): C08S11, doi:10.1029/2003JC001831.
    Collections
    • Applied Ocean Physics and Engineering (AOP&E)
    Suggested Citation
    Journal of Geophysical Research 109 (2004): C08S11
     

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