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Ice-core evidence for a small solar-source of atmospheric nitrate
journal contribution
posted on 2023-05-16, 13:20 authored by Palmer, AS, Tasman van OmmenTasman van Ommen, Mark Curran, Morgan, VIA precision-dated ice-core nitrate record from Law Dome, coastal East Antarctica is compared to the timing of known solar proton events and geomagnetic storms over the period 1888 to 1995. We find statistical evidence for a significant (P < 0.03) but small elevation in mean nitrate concentrations following the solar events (~ 11% over the 12 months beginning 3 months post-event). While some solar events are identifiable in the nitrate record, most are not distinguishable from the background noisy signal (which has numerous large peaks), and some solar events show no nitrate elevation above even mean levels.
History
Publication title
Geophysical Research LettersVolume
28Issue
10Pagination
1953-1956ISSN
0094-8276Department/School
Institute for Marine and Antarctic StudiesPublisher
American Geophysical UnionPlace of publication
WashingtonRepository Status
- Restricted