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    Moist synoptic transport of CO2 along the mid-latitude storm track

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    2011GL047238.pdf (701.8Kb)
    Date
    2011-05-12
    Author
    Parazoo, N. C.  Concept link
    Denning, A. S.  Concept link
    Berry, J. A.  Concept link
    Wolf, Aaron S.  Concept link
    Randall, D. A.  Concept link
    Kawa, S. Randolph  Concept link
    Pauluis, O.  Concept link
    Doney, Scott C.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/4630
    As published
    https://doi.org/10.1029/2011GL047238
    DOI
    10.1029/2011GL047238
    Keyword
     Atmospheric transport; Carbon cycle; Inversion; Isentropic coordinates; Synoptic weather; Tracer modeling 
    Abstract
    Atmospheric mixing ratios of CO2 are strongly seasonal in the Arctic due to mid-latitude transport. Here we analyze the seasonal influence of moist synoptic storms by diagnosing CO2 transport from a global model on moist isentropes (to represent parcel trajectories through stormtracks) and parsing transport into eddy and mean components. During winter when northern plants respire, warm moist air, high in CO2, is swept poleward into the polar vortex, while cold dry air, low in CO2, that had been transported into the polar vortex earlier in the year is swept equatorward. Eddies reduce seasonality in mid-latitudes by ∼50% of NEE (∼100% of fossil fuel) while amplifying seasonality at high latitudes. Transport along stormtracks is correlated with rising, moist, cloudy air, which systematically hides this CO2 transport from satellites. We recommend that (1) regional inversions carefully account for meridional transport and (2) inversion models represent moist and frontal processes with high fidelity.
    Description
    Author Posting. © American Geophysical Union, 2011. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 38 (2011): L09804, doi:10.1029/2011GL047238.
    Collections
    • Marine Chemistry and Geochemistry (MC&G)
    Suggested Citation
    Geophysical Research Letters 38 (2011): L09804
     

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