Title Simultaneous measurements of OClO, NO2 and O3 in the Arctic polar vortex by the GOMOS instrument
Author Tétard, C.; Fussen, D.; Bingen, C.; Capouillez, N.; Dekemper, E.; Loodts, N.; Mateshvili, N.; Vanhellemont, F.; Kyrola, E.; Tamminen, J.; Sofieva, V.; Hauchecorne, A.; Dalaudier, F.; Bertaux, J.L.; Fanton d'Andon, O.; Barrot, G.; Guirlet, M.; Fehr, T.; Saavedra, L.
Author Affil Tétard, C., Institut d'Aéronomie Spatiale de Belgique, Brussels, Belgium. Other: Finnish Meteorological Institute, Finland; CNRS, Service d'Aéronomie, France; ACRI-ST, France; European Space Agency, Italy
Source Atmospheric Chemistry and Physics, 9(20), p.7857-7866, . Publisher: Copernicus, Katlenburg-Lindau, International. ISSN: 1680- 7316
Publication Date 2009
Notes In English. Part of special issue no. 153, GOMOS (Global Ozone Monitoring by Occultation of Stars); data processing, geophysical validation and scientific results, edited by Van Roozendael, M., Bernath, P., and Murtagh, D., http://www.atmos-chem- phys.net/special_issue153.html; published in Atmospheric Chemistry and Physics Discussions: 4 June 2009, http://www.atmos- chem-phys-discuss.net/9/12707/2009/acpd-9- 12707-2009.html ; accessed in May, 2011. 34 refs. GeoRef Acc. No: 310496
Index Terms optical properties; ozone; remote sensing; spectra; statistical analysis; stratosphere; temperature; Arctic region; chlorine; depletion; halogens; hydrochloric acid; inorganic acids; nitrogen; nitrogen dioxide; polar vortex; satellite methods; seasonal variations; time series analysis; vorticity
Abstract 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.
URL http://www.atmos-chem-phys.net/9/7857/2009/acp-9-7857-2009.pdf
Publication Type journal article
Record ID 65007105