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

View/ Open
Issue Date
2014-12-20Author
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
Show full item recordAbstract
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
Collections
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
Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.