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    Coastal New England pilot study to determine fossil and biogenic formaldehyde source contributions using radiocarbon

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    2009JD012810.pdf (1.006Mb)
    Date
    2010-05-18
    Author
    Shen, Haiwei  Concept link
    Heikes, Brian G.  Concept link
    Merrill, John T.  Concept link
    McNichol, Ann P.  Concept link
    Xu, Li  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3896
    As published
    https://doi.org/10.1029/2009JD012810
    DOI
    10.1029/2009JD012810
    Keyword
     Formaldehyde; Radiocarbon; Volatile organic compounds; Oxygenated volatile organic compounds; Ozone; Troposphere 
    Abstract
    Compound specific radiocarbon analyses of atmospheric formaldehyde are reported as fraction modern (Fm) for a limited number of winter and summer air samples collected in coastal southern New England in 2007. The 11 of 13 samples with Fm < 0.2 were collected under the influence of the semipermanent Bermuda high-pressure system with transport from the Washington, D. C., to New York City urban corridor. The two samples with Fm > 0.2 (max ∼ 0.35) were collected on days with strong northwesterly flow and the least urban impact. The Fm data were combined with VOC observations from the Rhode Island Department of Environmental Management, estimates of oxygenated VOC (OVOC), and back trajectories to interpret the relative contributions of biogenic and fossil carbon sources. It is argued that CH2O sources were dominated by pollutant VOCs and OVOCs from upwind coastal cities as opposed to more local biogenic VOCs at the times of sample collection.
    Description
    Author Posting. © American Geophysical Union, 2010. 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 115 (2010): D10301, doi:10.1029/2009JD012810.
    Collections
    • Geology and Geophysics (G&G)
    Suggested Citation
    Journal of Geophysical Research 115 (2010): D10301
     

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