Physics
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29n..20g&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 14, pp. 20-1, CiteID 1675, DOI 10.1029/2002GL015358
Physics
3
Global Change: Atmosphere (0315, 0325), Atmospheric Composition And Structure: Middle Atmosphere-Constituent Transport And Chemistry (3334), Atmospheric Composition And Structure: Evolution Of The Atmosphere
Scientific paper
In this work, we examine the influence of northern hemispheric large-scale eddy fluxes on the zonal mean total ozone changes. For this purpose, zonal means of the eddy fluxes of the period 1979-93 were introduced into a dynamically-chemically coupled two-dimensional circulation model, based on a diffusivity approach for the quasi-geostrophic potential vorticity, the potential temperature and the chemical tracers. The model calculations show that the eddy fluxes induce regular interannual ozone variations with a period of about 3-3.5 years in the northern midlatitudes, and, for the pre-Pinatubo time period 1979-91, a decadal decline in the northern hemispheric total ozone that amounts to about 50% of the observed trend.
Gabriel Andreas
Schmitz Guido
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