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Observations of the loss of stratospheric NO2 following volcanic eruptionsObservations of stratospheric column amounts of nitrogen dioxide (NO2), nitric oxide (NO) and nitric acid (HNO3) have been made following major eruptions of the El Chichon and Mt. Pintatubo volcanoes. Midlatitude abundances of NO2 and NO were reduced by as much as 70% in the months following the appearance of the volcanic aerosols as compared to volcanically quite periods. There are heterogeneous reactions which could occur on the volcanic aerosols to convert NO2 into HNO3 but no commensurate increase in HNO3 column amounts was observed at the times of NO2 decrease.
Document ID
19950047216
Document Type
Reprint (Version printed in journal)
Authors
Coffey, M. T. (National Center for Atmospheric Research, Boulder, CO United States)
Mankin, William G. (National Center for Atmospheric Research, Boulder, CO United States)
Date Acquired
August 16, 2013
Publication Date
December 23, 1993
Publication Information
Publication: Geophysical Research Letters
Volume: 20
Issue: 24
ISSN: 0094-8276
Subject Category
GEOPHYSICS
Distribution Limits
Public
Copyright
Other