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Ice-core evidence for a small solar-source of atmospheric nitrate


Palmer, AS and van Ommen, TD and Curran, MAJ and Morgan, VI, Ice-core evidence for a small solar-source of atmospheric nitrate, Geophysical Research Letters, 28, (10) pp. 1953-1956. ISSN 0094-8276 (2001) [Refereed Article]

DOI: doi:10.1029/2000GL012207


A 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.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Physical geography and environmental geoscience
Research Field:Glaciology
Objective Division:Environmental Management
Objective Group:Other environmental management
Objective Field:Other environmental management not elsewhere classified
UTAS Author:Palmer, AS (Dr Anne Palmer)
UTAS Author:van Ommen, TD (Dr Tas van Ommen)
UTAS Author:Curran, MAJ (Dr Mark Curran)
UTAS Author:Morgan, VI (Mr Vincent Morgan)
ID Code:23446
Year Published:2001
Web of Science® Times Cited:28
Deposited By:IASOS
Deposited On:2001-08-01
Last Modified:2002-06-12

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