Observations of the loss of stratospheric NO 2  following volcanic eruptions | Zendy

Coffey M. T. | Zendy; Mankin William G. | Zendy

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Observations of the loss of stratospheric NO 2 following volcanic eruptions

Author(s) -

Coffey M. T.,

Mankin William G.

Publication year - 1993

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/93gl03151

Subject(s) - volcano , stratosphere , nitric acid , middle latitudes , atmospheric sciences , vulcanian eruption , nitrogen dioxide , nitrogen , environmental science , geology , geochemistry , chemistry , meteorology , inorganic chemistry , physics , organic chemistry

Observations of stratospheric column amounts of nitrogen dioxide (NO 2 ), nitric oxide (NO) and nitric acid (HNO 3 ) have been made following major eruptions of the El Chichón and Mt. Pinatubo volcanoes. Midlatitude abundances of NO 2 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 NO 2 into HNO 3 but no commensurate increase in HNO 3 column amounts was observed at the times of NO 2 decrease.

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