Heterogeneous PSC ozone loss during an ozone mini-hole

Details Heterogeneous PSC ozone loss during an ozone mini-hole Heterogeneous PSC ozone loss during an ozone mini-hole

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.2503g&link_type=abstract

Geophysical Research Letters, Volume 24, Issue 20, p. 2503-2506

Physics

9

Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Middle Atmosphere-Constituent Transport And Chemistry, Meteorology And Atmospheric Dynamics: Stratosphere/Troposphere Interactions, Global Change: Atmosphere

Scientific paper

An upper tropospheric high pressure system resulting in large scale ascent even in the stratosphere, is investigated by means of simulations using the coupled dynamic-chemical general circulation model ECHAM3/CHEM. These simulations show two kinds of impact on stratospheric ozone. Dynamic redistribution caused by ascent leads to a rapid decrease of total ozone, i.e., an ozone mini-hole. The formation of polar stratospheric clouds caused by adiabatic cooling leads to a chlorine activation at the location of the ozone mini-hole. The resulting chemical ozone depletion occurs downstream of the ozone mini-hole, due to the stratospheric calculation.

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