References

ACP

Atmospheric Chemistry and Physics

ACP

1680-7324

Copernicus GmbH

Göttingen, Germany

10.5194/acp-9-7857-2009

Simultaneous measurements of OClO, NO2 and O3 in the Arctic polar vortex by the GOMOS instrument

Tétard

¹ Fussen

¹ Bingen

¹ Capouillez

¹ Dekemper

¹ Loodts

¹ Mateshvili

¹ Vanhellemont

¹ Kyrölä

² Tamminen

² Sofieva

² Hauchecorne

³ Dalaudier

³ Bertaux

J.-L.

³ Fanton d'Andon

⁴ Barrot

⁴ Guirlet

⁴ Fehr

⁵ Saavedra

⁵

Institut d'Aéronomie Spatiale de Belgique, Brussels, Belgium

Finnish Meteorological Institute, Helsinki, Finland

Service d'Aéronomie du CNRS, Verrières-le-buisson, France

ACRI-ST, Sophia-Antipolis, France

European Space Research Institute (ESRIN), European Space Agency, Frascaty, Italy

20 10 2009

9 20 7857 7866

This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

This article is available from http://www.atmos-chem-phys.net/9/7857/2009/acp-9-7857-2009.html

The full text article is available as a PDF file from http://www.atmos-chem-phys.net/9/7857/2009/acp-9-7857-2009.pdf

We present the first nighttime measurements of OClO from a limb-viewing satellite instrument in the Arctic polar vortex. The relationship between OClO, NO2 and O3 slant column densities in the Arctic polar vortex are analyzed from the GOMOS measurements. The retrieval process is based on a differential optical absorption spectroscopy (DOAS) method applied on the weighted median GOMOS transmittances. A study of the longitudinal distributions of OClO, NO2 and O3 above 65° north in January 2008 is presented. It shows a strong halogen activation in the lower stratosphere and a strong denoxification in the entire stratosphere inside the Arctic polar vortex. Time series of temperatures and OClO, NO2 and O3 slant column densities for the winters 2002/2003 to 2007/2008 are also presented. They highlight the correlation between temperature, OClO and NO2. The GOMOS instrument appears to be a very suitable instrument for the monitoring of OClO, NO2 and O3 in the stratosphere during nighttime.

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