Chemistry and transport in a three-dimensional stratospheric model: Chlorine species during a simulated stratospheric warming

Journal Article · Fri Jan 20 04:00:00 EST 1989 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JD094iD01p01057· OSTI ID:5274166

Kaye, J A; Rood, R B ^[1]

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1. NASA Goddard Space Flight Center, Greenbelt, MD (USA)

Calculations of coupled chemistry and transport for the stratosphere are carried out for a 6-day period during the February 1979 stratospheric major warming, using winds derived from a spectral forecast model. All major families of stratospheric chemistry (odd oxygen, odd nitrogen, odd hydrogen, and odd chlorine), as well as longitudinally varying reaction rate coefficients and photolysis rates, are included in the model. Eight constituents and/or families are transported in the model; additional ones are held fixed or inferred by photochemical equilibrium approximations. Results presented include zonal mean fields, latitude-longitude distributions (and their changes with time), vertical profiles, and time series of the mixing ratios of transported constituents and families as well as of their total stratospheric column amounts. The results obtained show the relative importance of chemistry and transport for the chlorine-containing species ClO, ClONO{sub 2}, HCl, and HOCl. Dynamical effects dominate the variability of HCl, while diurnal ones dominate that of ClONO{sub 2} and ClO. Diurnal chemistry and dynamical variability are of similar magnitude for HOCl. The effects of strong planetary wave activity may be seen as large longitudinal variability of the total HCl and ClONO{sub 2} columns in the stratosphere; in middle and high northern latitudes it is sufficiently large that it exceeds the diurnal variability of the column.

• OSTI ID: 5274166
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 94:D1; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ATMOSPHERIC CHEMISTRY
ATMOSPHERIC CIRCULATION
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CHLORINE COMPOUNDS
CHLORINE NITRATES
CHLORINE OXIDES
DECOMPOSITION
EARTH ATMOSPHERE
ELEMENTS
ENVIRONMENTAL TRANSPORT
GENERAL CIRCULATION MODELS
GEOGRAPHICAL VARIATIONS
GRAVITY WAVES
HALOGEN COMPOUNDS
HEATING
HYDROCHLORIC ACID
HYDROGEN
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LATITUDE EFFECT
MASS TRANSFER
MATHEMATICAL MODELS
NITRATES
NITROGEN
NITROGEN COMPOUNDS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
STRATOSPHERE
THREE-DIMENSIONAL CALCULATIONS
VARIATIONS