Odin/SMR Limb Observations of O3, N2O, ClO, and HNO3 in the Polar Winter Stratosphere During 2001-2005: an Overview.

HR: 1340h
AN: A13D-0981 [Abstracts]
TI: Odin/SMR Limb Observations of O3, N2O, ClO, and HNO3 in the Polar Winter Stratosphere During 2001-2005: an Overview.
AU: * Urban, J
EM: jo.urban@rss.chalmers.se
AF: Chalmers University of Technology, Department of Radio and Space Science, Goteborg, 412 96 Sweden
AU: Murtagh, D
A13D-0981 AF: Chalmers University of Technology, Department of Radio and Space Science, Goteborg, 412 96 Sweden
AU: Lautie, N
A13D-0981 AF: Chalmers University of Technology, Department of Radio and Space Science, Goteborg, 412 96 Sweden
AU: Eriksson, P
A13D-0981 AF: Chalmers University of Technology, Department of Radio and Space Science, Goteborg, 412 96 Sweden
AU: Dupuy, E
A13D-0981 AF: Observatoire Aquitain des Sciences de l'Univers, L3AB, Floirac, 33270 France
AU: de La Noe, J
A13D-0981 AF: Observatoire Aquitain des Sciences de l'Univers, L3AB, Floirac, 33270 France
AU: Frisk, U
A13D-0981 AF: Swedish Space Corporation, Box 4207, Solna, 171 04 Sweden
AU: Jones, A
A13D-0981 AF: Chalmers University of Technology, Department of Radio and Space Science, Goteborg, 412 96 Sweden
AU: Le Flochmoen, E
A13D-0981 AF: Laboratoire d'Aerologie, Observatoire de Midi-Pyrenees, Toulouse, 31400 France
AU: Olberg, M
A13D-0981 AF: Chalmers University of Technology, Onsala Space Observatory, Onsala, 439 92 Sweden
AU: Ricaud, P
A13D-0981 AF: Laboratoire d'Aerologie, Observatoire de Midi-Pyrenees, Toulouse, 31400 France
AU: Rosevall, J
A13D-0981 AF: Chalmers University of Technology, Department of Radio and Space Science, Goteborg, 412 96 Sweden
AB: Profile measurements of key constituents relevant to polar stratospheric chemistry and dynamics such as ozone (O₃), nitrous oxide (N₂O), chlorine monoxide (ClO), and nitric acid (HNO₃), taken at high latitudes of the winter hemispheres by the Odin Sub- Millimetre Radiometer (SMR), are presented. The Odin/SMR instrument, launched in February 2001, employs 4 tunable single-sideband Schottky-diode heterodyne receivers in the 485-580 GHz spectral range and a 1 m telescope for passive observations of thermal emissions originating from the Earth's limb. Spectra are recorded using two high resolution auto-correlator spectrometers. Atmospheric measurements are performed in a time sharing mode with astronomical observations. Profile information is retrieved from the spectral measurements of a limb scan by inverting the radiative transfer equation for a non-scattering atmosphere. The characteristics of the recently reprocessed Odin/SMR stratospheric mode level-2 data (version 2.0) are discussed. Scientific results are presented focusing on measurements taken in the polar winter stratosphere of both hemispheres during the period 2001-2005. The Odin/SMR measurements of nitrous oxide, chlorine monoxide, nitric acid, and ozone allow to study the chemical and dynamical evolution of the Arctic and Antarctic vortices by providing information on chlorine activation, denitrification, subsidence of vortex air, and on ozone loss.
DE: 0340 Middle atmosphere: composition and chemistry
DE: 0341 Middle atmosphere: constituent transport and chemistry (3334)
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005