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Polar chemical ozone loss as observed from SCIAMACHY limb measurements.

Thiranan Sonkaew(1), Christian von Savigny(1), Kai-Uwe Eichmann(1), Alexei Rozanov(1), Heinrich Bovensmann(1) and John Burrows(1)

(1) Institute of Environmental Physics, Otto-Hahn-Allee 1, D-28359, Bremen, Germany

Abstract

Stratospheric ozone plays the most significant role in the atmosphere to protect us from harmful UV solar radiation. To retrieve the ozone profile in the stratosphere and lower mesosphere from SCIAMACHY limb measurements, we combine information from the Chappuis and Hartley ozone absorption bands using the SCIATRAN retrieval algorithm. The ozone product is called Stratozone 2.x. This ozone retrieval method will also be described in this contribution.

The Stratozone 2.x data is used to calculate the chemical ozone loss during polar winter/spring using the vortex average method. The vortex region is determined using stratospheric assimilated data from UK Met Office. The chemical ozone loss is derived from observed ozone concentrations and ozone descending from dynamic cooling at certain isentropic levels. Results of chemical ozone loss during winter/spring will be presented in both Arctic and Antarctic regions.