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Uptake of NO y on wave‐cloud ice particles
Author(s) -
Weinheimer A. J.,
Campos T. L.,
Walega J. G.,
Grahek F. E.,
Ridley B. A.,
Baumgardner D.,
Twohy C. H.,
Gandrud B.,
Jensen E. J.
Publication year - 1998
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 - 10.1029/97gl02957
Subject(s) - ice cloud , phase (matter) , atmospheric sciences , gas phase , environmental science , meteorology , geology , mineralogy , chemistry , physics , optics , thermodynamics , organic chemistry , radiative transfer
In a flight through a wave cloud during SUCCESS on 2 May 1996, simultaneous forward‐ and aft‐facing NO y inlets were used to infer the amount of condensed‐phase NO y present on ice particles that were up to a few minutes old. Condensed‐phase amounts were 25–75 pptv, or 10–20% of gas‐phase NO y . Given the rapid HNO 3 uptake on ice observed in the laboratory, a model calculation implies that virtually all of the gas‐phase HNO 3 will be depleted in the first 1–2 minutes after the appearance of ice. Thus the NO y observations are consistent with the laboratory results only if the ambient HNO 3 /NO y ratio is 10–20%.