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Stratospheric aerosols and PSCs as observed by GOMOS on Envisat: results for the period 2002-2005.

Filip Vanhellemont(1), Didier Fussen(1), Jan Dodion(1), Christine Bingen(1), Nina Mateshvili(1), Erkki Kyrola(2), Johanna Tamminen(2), Viktoria Sofieva(2), Seppo Hassinen(2), Annika Seppala(2), Pekka Verronen(2), Jean-Loup Bertaux(3), Alain Hauchecorne(3), Francis Dalaudier(4), Odile Fanton d'Andon(5), Gilbert Barrot(5), Marielle Guirlet(5), Antoine Mangin(5), Thorsten Fehr(6), Lidia Saavedra(6), Rob Koopman(6), Paul Snoeij(7), Jean-Baptiste Renard(8) and Renaud Fraisse(9)

(1) Belgian Institute for Space Aeronomy, Ringlaan 3, B-1180 Brussels, Belgium
(2) Finnish Meteorological Institute, PO Box 503, FIN-001010 Helsinki, Finland
(3) Service d'Aeronomie du CNRS, BP3, 91371 Verrieres le Buisson Cedex, France
(4) Service d'Aeronomie du CNRS, BP3, 91371 Verriers le Buisson Cedex, France
(5) ACRI-ST, 260 route du Pin Montard, BP 234 06904 Sophia-Antipolis, France
(6) ESA/ESRIN, Via Galileo Galilei, I-00044 Frascati, Italy
(7) ESA/ESTEC, Keplerlaan 1, 2200 A6 Noordwijk, Netherlands
(8) LPCE-CNRS, 3A Avenue de la recherche scientifique, F-45071 Orleans Cedex 2, France
(9) ASTRIUM, 31 Av. des Cosmonautes, 31402 Toulouse Cedex 4, France

Abstract

GOMOS (Global Ozone Monitoring by Occultation of Stars) is a UV/Visible spectrometer that was launched onboard the European Envisat satellite in March 2002. Using measurements of star light that is transmitted through the Earth’s atmosphere it is possible to retrieve altitude concentration profiles for a number of gasses (neutral air, O3, NO2, NO3, OClO, O2, H2O) and altitude extinction profiles for particulate matter (aerosols, PSCs, PMCs). Here, we will present the main results for stratospheric aerosol and PSC extinction coefficients for the time period 2002 to 2005, and draw conclusions on their temporal evolution and spatial distribution on a global scale. Some preliminary results on particle sizes are also discussed.

 

Workshop presentation

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry