Atmos. Chem. Phys. Discuss., 5, 1241-1253, 2005
www.atmos-chem-phys-discuss.net/5/1241/2005/
doi:10.5194/acpd-5-1241-2005
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Evidence for long-lived polar vortex air in the mid-latitude summer stratosphere from in situ laser diode CH4 and H2O measurements
G. Durry1,2 and A. Hauchecorne1
1IPSL, Service d’Aéronomie, UMR 7620, BP 3, 91371 Verrières-le-Buisson Cédex, France
2GSMA, UMR 6089, Université de Reims, BP 1039, 51687 Reims, Cédex 2, France

Abstract. A balloon borne diode laser spectrometer was launched in southern France in June 2000 to yield in situ stratospheric CH4 and H2O measurements. In the altitude region ranging from 20 km to 25 km, striking large spatial structures were observed in the vertical concentration profiles of both species. We suggest these patterns are due to the presence of long-lived remnants of the wintertime polar vortex in the mid-latitude summer stratosphere. To support this interpretation, a high resolution advection model for potential vorticity is used to investigate the evolution of the Arctic vortex after its breakdown phase in spring 2000.

Citation: Durry, G. and Hauchecorne, A.: Evidence for long-lived polar vortex air in the mid-latitude summer stratosphere from in situ laser diode CH4 and H2O measurements, Atmos. Chem. Phys. Discuss., 5, 1241-1253, doi:10.5194/acpd-5-1241-2005, 2005.
 
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