An estimate of the Antarctic ozone modulation by the QBO. [Quasi-Biennial Oscillation]

Journal Article · Fri Feb 01 04:00:00 EST 1991 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/90GL02593· OSTI ID:5513862

Mancini, E; Visconti, G; Pitari, G; Verdecchia, M ^[1]

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1. Universita de L'Aquila (Italy)

The possible effects of the QBO on the ozone distribution have been studied including in a 2D model a parameterization of Kelvin and Rossby-gravity wave forcing in the lower equatorial stratosphere. A chemical code complete with heterogeneous reactions allows a simulation of the ozone depletion due to the increase of stratospheric chlorine. With this model, the authors study the possible modulation of the secular trend in the Antarctic ozone hole by the QBO. When heterogeneous chemistry is not included, the model shows a polar ozone oscillation ({plus minus}6 Dobson Units) comparable to that deduced from early measurements (1970-1975). When heterogeneous reactions are taken into account, the model predicts a larger ozone oscillation in the Southern Hemisphere ({plus minus}12 Dobson Units) comparable to that obtained from recent observations. This behavior seems to point out a QBO induced temperature effect and its feedback on PSC with activation of heterogeneous chemistry.

• OSTI ID: 5513862
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Journal Name: Geophysical Research Letters (American Geophysical Union); (United States) Vol. 18:2; ISSN 0094-8276; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540110*
AIRSHIPS
ANTARCTIC REGIONS
ANTARCTICA
ATMOSPHERIC CHEMISTRY
BALLOONS
CHALCOGENIDES
CHEMISTRY
CHLORINE
CHLORINE COMPOUNDS
CHLORINE OXIDES
CLOUDS
CORRELATIONS
DISTRIBUTION
EARTH ATMOSPHERE
ECOLOGICAL CONCENTRATION
ELEMENTS
GRAVITY WAVES
HALOGEN COMPOUNDS
HALOGENS
HETEROGENEOUS EFFECTS
HYDROPEROXY RADICALS
HYDROXYL RADICALS
LAYERS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
OSCILLATIONS
OXIDES
OXYGEN COMPOUNDS
OZONE
OZONE LAYER
POLAR REGIONS
RADICALS
SATELLITES
SEASONAL VARIATIONS
STRATOSPHERE
TEMPERATURE EFFECTS
TWO-DIMENSIONAL CALCULATIONS
VARIATIONS