Impact of interannual variability (1979-1986) of transport and temperature on ozone as computed using a two-dimensional photochemical model

Journal Article · Wed Mar 20 00:00:00 EST 1991 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/90JD02661· OSTI ID:5458060

Jackman, C H; Stolarski, R S; Rosenfield, J E; Kaye, J A ^[1]; Nash, E R ^[2]

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1. NASA Goddard Space Flight Center, Greenbelt, MD (USA)
2. Applied Research Corp., Landover, MD (USA)

Eight years of NMC (National Meteorological Center) temperature and SBUV (solar backscattered ultraviolet) ozone data were used to calculate the monthly mean heating rates and residual circulation for use in a two-dimensional photochemical model in order to examine the interannual variability of modeled ozone. Fairly good correlations were found in the interannual behavior of modeled and measured SBUV ozone in the upper stratosphere at middle to low latitudes, where temperature dependent photochemistry is thought to dominate ozone behavior. The calculated total ozone is found to be more sensitive to the interannual residual circulation changes than to the interannual temperature changes. The magnitude of the modeled ozone variability is similar to the observed variability, but the observed and modeled year to year deviations are mostly uncorrelated. The large component of the observed total ozone variability at low latitudes due to the quasi-biennial oscillation (QBO) is not seen in the modeled total ozone, as only a small QBO signal is present in the heating rates, temperatures, and monthly mean residual circulation. Large interanual changes in tropospheric dynamics are believed to influence the interannual variability in the total ozone, especially at middle and high latitudes. Since these tropospheric changes and most of the QBO forcing are not included in the model formulation, it is not surprising that the interannual variability in total ozione is not well represented in the model computations.

• OSTI ID: 5458060
• Journal Information: Journal of Geophysical Research; (United States), Vol. 96:D3; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
OZONE LAYER
MATHEMATICAL MODELS
AMBIENT TEMPERATURE
ANNUAL VARIATIONS
ATMOSPHERIC CHEMISTRY
ATMOSPHERIC CIRCULATION
BACKSCATTERING
ECOLOGICAL CONCENTRATION
HEATING RATE
LATITUDE EFFECT
METEOROLOGY
OSCILLATIONS
OZONE
PHOTOCHEMICAL REACTIONS
SOLAR RADIATION
STRATOSPHERE
TEMPERATURE DEPENDENCE
TROPOSPHERE
TWO-DIMENSIONAL CALCULATIONS
ULTRAVIOLET RADIATION
CHEMICAL REACTIONS
CHEMISTRY
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
GEOGRAPHICAL VARIATIONS
LAYERS
RADIATIONS
SCATTERING
STELLAR RADIATION
VARIATIONS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)