Studies of Arctic stratospheric ozone in a 2-D model including some effects of zonal asymmetries

Journal Article · Thu Mar 01 00:00:00 EST 1990 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/GL017i004p00557· OSTI ID:5397176

Isaksen, I S.A.; Rognerud, B; Stordal, F ^[1]; Coffey, M T; Mankin, W G ^[2]

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1. Univ. of Oslo (Norway)
2. National Center for Atmospheric Research, Boulder, CO (USA)

A two-dimensional (2-D) zonally averaged chemistry-transport model of the stratosphere has been extended to include some zonally asymmetric effects to study the chemically disturbed conditions in the Arctic winter during the occurrence of polar stratospheric clouds (PSCs). The model allows air parcels that have been in PSCs in the polar night to be exposed to sunlight during the passage south through a wave trough. Large enhancements of ClO are estimated as well as significant ozone reductions, most pronounced around the 20 km height level. The ozone depletions maximize in late March, about one month after the cease in PSC activity in the model, and amount to 5-8% in column ozone at 70{degree}N. In agreement with column measurements made from the DC-8, the model estimates an increase in the columns of HNO{sub 3} and ClONO{sub 2}, and a decrease in the HCl column within the polar vortex.

• OSTI ID: 5397176
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Vol. 17:4; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
01 COAL, LIGNITE, AND PEAT
ARCTIC REGIONS
OZONE LAYER
STRATOSPHERE
CLIMATE MODELS
ATMOSPHERIC CHEMISTRY
AIRCRAFT
CHLORINE COMPOUNDS
CHLORINE OXIDES
CLOUDS
DAILY VARIATIONS
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
FORECASTING
HYDROCHLORIC ACID
LOSSES
NITRATES
NITRIC ACID
OZONE
PHOTOCHEMICAL REACTIONS
SEASONAL VARIATIONS
TWO-DIMENSIONAL CALCULATIONS
VORTICES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
EARTH ATMOSPHERE
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LAYERS
MASS TRANSFER
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLAR REGIONS
VARIATIONS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
010900 - Coal
Lignite
& Peat- Environmental Aspects