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Assimilation of Odin/SMR O<sub>3</sub> and N<sub>2</sub>O measurements in a three-dimensional chemistry transport model.

hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorEL AMRAOUI, L.
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorRICAUD, P.
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorURBAN, Jakub
hal.structure.identifierAnalytic and Computational Research, Inc. - Earth Sciences [ACRI-ST]
dc.contributor.authorTHÉODORE, Bertrand
hal.structure.identifierService d'aéronomie [SA]
dc.contributor.authorHAUCHECORNE, Alain
hal.structure.identifierDepartment of Radio and Space Science [Göteborg]
dc.contributor.authorLAUTIE, N.
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorDE LA NOE, J.
hal.structure.identifierAnalytic and Computational Research, Inc. - Earth Sciences [ACRI-ST]
dc.contributor.authorGUIRLET, Marielle
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
dc.contributor.authorLE FLOCHMOËN, E.
hal.structure.identifierDepartment of Radio and Space Science [Göteborg]
dc.contributor.authorMURTAGH, D.
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorDUPUY, E.
hal.structure.identifierSwedish Space Corporation [SSC]
dc.contributor.authorFRISK, U.
hal.structure.identifierAnalytic and Computational Research, Inc. - Earth Sciences [ACRI-ST]
dc.contributor.authorFANTON D'ANDON, O.
dc.date.issued2004
dc.identifier.issn2169-897X
dc.description.abstractEnA method for assimilating observations of long-lived species such as ozone (O<sub>3</sub>) and nitrous oxide (N<sub>2</sub>O) in a three-dimensional chemistry transport model (3D-CTM) is described. The model is forced by the temperature and wind analyses from the European Centre for Medium-Range Weather Forecasts (ECMWF). The O<sub>3</sub> and N<sub>2</sub>O fields used in this study are obtained from the Sub-Millimeter Radiometer (SMR) aboard the Odin satellite. The assimilation technique used is the sequential statistical interpolation approach. The parametrization of the error covariance matrix of the model forecast field is described. A sensitivity study of the system parameters is done in terms of the OMF (observation minus forecast) vector also called “innovation” vector and in terms of the χ<sup>2</sup> (chi-square) test. The effect of the correlation distances is critical for the assimilated field. The RMS (root mean square) of the OMF for the correlation distances is minimal for values of 1500 km in the meridional direction and 500 km in the zonal direction for both O<sub>3</sub> and N<sub>2</sub>O. The treatment of the meridional distance as a function of latitude does not reveal an important improvement. The χ<sup>2</sup> diagnostic shows that the asymptotic value of the model error (the model error of saturation) is optimal for the value of 12.5% for O<sub>3</sub> and 18% for N<sub>2</sub>O. We demonstrate the applicability of the developed assimilation method for the Odin/SMR data. We also present first results of the assimilation of Odin/SMR ozone and nitrous oxide for the period from 22 December 2001 to 17 January 2002.
dc.language.isoen
dc.publisherAmerican Geophysical Union
dc.subject.enassimilation
dc.subject.enAtmospheric chemistry
dc.subject.entransport
dc.subject.enMiddle atmosphere
dc.title.enAssimilation of Odin/SMR O<sub>3</sub> and N<sub>2</sub>O measurements in a three-dimensional chemistry transport model.
dc.typeArticle de revue
dc.identifier.doi10.1029/2004JD004796
dc.subject.halPhysique [physics]/Physique [physics]/Physique Atmosphérique et Océanique [physics.ao-ph]
bordeaux.journalJournal of Geophysical Research: Atmospheres
bordeaux.pageD22304
bordeaux.volume109
bordeaux.issueD22
bordeaux.peerReviewedoui
hal.identifierhal-00136450
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00136450v1
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