Condensation of HNO sub 3 on falling ice particles: Mechanism for denitrification of the polar stratosphere

Journal Article · Wed Feb 28 23:00:00 EST 1990 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/GL017i004p00449· OSTI ID:5329592

Wofsy, S C; Salawitch, R J; Yatteau, J H; McElroy, M B ^[1]; Gandrud, B W; Dye, J E; Baumgardner, D ^[2]

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1. Harvard Univ., Cambridge, MA (USA)
2. National Center for Atmospheric Research, Boulder, CO (USA)

Ice particles created in polar stratospheric cooling events are predicted to descent into Type I PSCs and accrete a coating of nitric acid trihydrate (NAT) that inhibits evaporation. Coated particles efficiently strip HNO{sub 3} from the atmosphere, providing a mechanism for denitrification without significant dehydration. Coatings that disintegrate may release large particles of NAT that influence subsequent particle growth.

• OSTI ID: 5329592
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Journal Name: Geophysical Research Letters (American Geophysical Union); (United States) Vol. 17:4; ISSN GPRLA; ISSN 0094-8276
• Country of Publication: United States
• Language: English

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54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ATMOSPHERIC CHEMISTRY
CHEMICAL REACTIONS
CHEMISTRY
CLOUDS
DENITRIFICATION
DEPOSITION
EARTH ATMOSPHERE
EVAPORATION
HYDRATES
HYDROGEN COMPOUNDS
ICE
INHIBITION
INORGANIC ACIDS
KINETICS
LAYERS
NITRIC ACID
NUCLEATION
OZONE LAYER
PARTIAL PRESSURE
PARTICLES
PARTICULATES
PHASE TRANSFORMATIONS
POLAR REGIONS
REACTION KINETICS
STRATOSPHERE
SURFACE COATING
TEMPERATURE DEPENDENCE
VAPOR CONDENSATION