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    Low time resolution analysis of polar ice cores cannot detect impulsive nitrate events

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    Issue Date
    2014-12-20
    Author
    Smart, D. F.
    Shea, M. A.
    Laird, Claude M.
    Melott, Adrian L.
    Publisher
    American Geophysical Union
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    Ice cores are archives of climate change and possibly large solar proton events (SPEs). Wolff et al. (2012) used a single event, a nitrate peak in the GISP2-H core, which McCracken et al. (2001a) time associated with the poorly quantified 1859 Carrington event, to discredit SPE-produced, impulsive nitrate deposition in polar ice. This is not the ideal test case. We critique the Wolff et al. analysis and demonstrate that the data they used cannot detect impulsive nitrate events because of resolution limitations. We suggest reexamination of the top of the Greenland ice sheet at key intervals over the last two millennia with attention to fine resolution and replicate sampling of multiple species. This will allow further insight into polar depositional processes on a subseasonal scale, including atmospheric sources, transport mechanisms to the ice sheet, postdepositional interactions, and a potential SPE association.
    Description
    This is the published version. Copyright 2014 American Geophysical Union
    URI
    http://hdl.handle.net/1808/19293
    DOI
    https://doi.org/10.1002/2014JA020378
    Collections
    • Physics and Astronomy Scholarly Works [1632]
    Citation
    Smart, D. F., M. A. Shea, A. L. Melott, and C. M. Laird. "Low Time Resolution Analysis of Polar Ice Cores Cannot Detect Impulsive Nitrate Events." J. Geophys. Res. Space Physics Journal of Geophysical Research: Space Physics 119.12 (2014): 9430-440. http://dx.doi.org/10.1002/2014JA020378

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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