Berlin 2012 – scientific programme

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UP: Fachverband Umweltphysik

UP 14: Atmosphere 2

UP 14.7: Talk

Thursday, March 29, 2012, 16:15–16:30, HFT-FT 131

Stratospheric trends of ozone and bromine oxide from SCIAMACHY limb measurements — •Claus Gebhardt, Alexei Rozanov, Mark Weber, and John P. Burrows — University of Bremen, Institute of Environmental Physics

Anthropogenic sources of bromine pose a considerable risk to the stratospheric ozone layer. The exact contribution of bromine in the overall halogen related ozone loss is still uncertain. More than two decades after signing Montreal Protocol there are meanwhile indications for decreases in stratospheric bromine. The SCIAMACHY satellite instrument aboard ENVISAT now provides amongst others a decade of ozone and BrO profile measurements from the limb retrieval (2002-2011).

In this study we present vertically resolved trends for stratospheric ozone and BrO with a particular focus at their altitude and latitude variation. This is followed by comparisons of ozone trends with contemporary space borne instruments. An overview of the current bromine trends as derived from SCIAMACHY will be given.