Evolution of the total ozone field during the breakdown of the Antarctic circumpolar vortex

Journal Article · Thu Sep 20 04:00:00 EDT 1990 · Journal of Geophysical Research; (USA)

DOI:https://doi.org/10.1029/JD095iD10p16529· OSTI ID:6062160

Bowman, K P ^[1]

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1. Univ. of Illinois, Urbana (USA)

Nine years of total ozone measurements from the Total Ozone Mapping Spectrometer (TOMS) on Nimbus 7 are used to study the evolution of the southern hemisphere total ozone field during the breakdown of the Antarctic circumpolar vortex. The TOMS data provide detailed maps of the morphology of the ozone field and reliable estimates of the vertically integrated meridional transport of ozone during the springtime period when the breakdown occurs (September, October, November). In estimating the ozone transport, chemical effects, including those thought to be responsible for the Antarctic ozone hole, are neglected. This approximation appears to be valid for times scales of a few days to a week. On this time scale, local ozone changes are primarily due to transport. Planetary-scale waves, especially zonal wave numbers 1 and 2 dominate the eddy variance and ozone transport. Wave number 1 is quasistationary, while wave number 2 is eastward moving with a period of {approximately}10 days. Before the breakdown the planetary-scale waves transport ozone poleward (equatorward) as their amplitude increases (decreases). During the vortex breakdown and filling of the ozone hole, when poleward ozone transport is large, planetary wave amplitudes generally decrease.

• OSTI ID: 6062160
• Journal Information: Journal of Geophysical Research; (USA), Journal Name: Journal of Geophysical Research; (USA) Vol. 95:D10; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540110*
AMPLITUDES
ANTARCTIC REGIONS
ANTARCTICA
CURRENTS
EARTH PLANET
ECOLOGICAL CONCENTRATION
EDDY CURRENTS
ELECTRIC CURRENTS
ENVIRONMENTAL TRANSPORT
HOLES
LAYERS
MAPPING
MASS TRANSFER
OZONE
OZONE LAYER
PLANETS
POLAR REGIONS
SATELLITES
SEASONAL VARIATIONS
SOUTHERN HEMISPHERE
SPECTROSCOPY
TIME DEPENDENCE
VARIATIONS
VORTICES
WAVE FORMS