Heterogeneous conversion of N2O5 to HNO3 on background stratospheric aerosols - Comparisons of model results with data

Details Heterogeneous conversion of N2O5 to HNO3 on background stratospheric aerosols - Comparisons of model results with data Heterogeneous conversion of N2O5 to HNO3 on background stratospheric aerosols - Comparisons of model results with data

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19..397c&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, Feb. 21, 1992, p. 397-400.

Physics

28

Aerosols, Atmospheric Chemistry, Nitric Acid, Nitrogen Oxides, Photochemical Reactions, Stratosphere, Atmospheric Composition, Planetary Limb, Simulation

Scientific paper

The effects of heterogeneous processing by a parameterized lower stratospheric sulfate aerosol layer on model calculations were examined using a 2D photochemical model. Model results were compared with zonally averaged LIMS data on HNO3 and NO2 and in situ measurements of NO, NO(y), and ClO, taken by the ER-2 aircraft. The results obtained are contradictory: some comparisons favor heterogeneous chemistry, and some do not. It is suggested that the assumptions made to parameterize the sulfate aerosol chemistry result in a rate of heterogeneous processing that is too vigorous.

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