Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 8 1 2008 10.5194/acpd-8-3027-2008 http://www.atmos-chem-phys-discuss.net/8/3027/2008/ http://www.atmos-chem-phys-discuss.net/8/3027/2008/acpd-8-3027-2008.html http://www.atmos-chem-phys-discuss.net/8/3027/2008/acpd-8-3027-2008.pdf 3027 3142 2008-02-14 Validation of NO₂ and NO from the Atmospheric Chemistry Experiment (ACE) T. Kerzenmacher tobias@atmosp.physics.utoronto.ca M. A. Wolff K. Strong E. Dupuy K. A. Walker L. K. Amekudzi R. L. Batchelor P. F. Bernath G. Berthet T. Blumenstock C. D. Boone K. Bramstedt C. Brogniez S. Brohede J. P. Burrows V. Catoire J. Dodion J. R. Drummond D. G. Dufour B. Funke D. Fussen F. Goutail D. W. T. Griffith C. S. Haley F. Hendrick M. Höpfner N. Huret N. Jones J. Kar I. Kramer E. J. Llewellyn M. López-Puertas G. Manney C. T. McElroy C. A. McLinden S. Melo S. Mikuteit D. Murtagh F. Nichitiu J. Notholt C. Nowlan C. Piccolo J.-P. Pommereau C. Randall P. Raspollini M. Ridolfi A. Richter M. Schneider O. Schrems M. Silicani G. P. Stiller J. Taylor C. Tétard M. Toohey F. Vanhellemont T Warneke J. M. Zawodny J. Zou Department of Physics, University of Toronto, Toronto,Ontario, Canada Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada Institute of Environmental Physics, Institute of Remote Sensing, Universität Bremen, Germany Department of Chemistry, University of York, Heslington, York, U.K. Laboratoire de Physique et Chimie de l'Environnement, CNRS – Université d'Orléans, Orléans, France Forschungszentrum Karlsruhe and Universität Karlsruhe, Institut für Meteorologie und Klimaforschung (IMK), Karlsruhe, Germany Laboratoire d'Optique Atmosphérique, Universitédes sciences et technologies de Lille, Villeneuve d'Ascq, France Department of Radio and Space Science, Chalmers University of Technology, Göteborg, Sweden Belgisch Instituut voor Ruimte-Aëronomie – Institut d'Aéronomie Spatiale de Belgique (IASB-BIRA), Bruxelles, Belgium Department of Physics & Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada Picomole Instruments Inc., Edmonton, Alberta, Canada Instituto de Astrofísica de Andalucía, CSIC, Granada, Spain Service d'aéronomie – CNRS, Verrières-le-Buisson, France School of Chemistry, University of Wollongong, Australia Centre for Research in Earth and Space Science, York University, Toronto, Ontario, Canada Institute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, Saskatchewan, Canada Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA Environment Canada, Downsview, Ontario, Canada Canadian Space Agency, St Hubert, Quebec, Canada Atmospheric, Oceanic and Planetary Physics, University of Oxford, Oxford, UK Laboratory for Atmospheric and Space Physics & Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, Colorado, USA Istituto di Fisica Applicata “Nello Carrara” (IFAC) del Consiglio Nazionale delle Ricerche (CNR), Firenze, Italy Dipartimento di Chimica Fisica e Inorganica, Universitá di Bologna, Bologna, Italy Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany NASA Langley Research Center, Hampton, Virginia, USA Vertical profiles of NO₂ and NO have been obtained from solar occultation measurements by the Atmospheric Chemistry Experiment (ACE), using an infrared Fourier Transform Spectrometer, ACE-FTS, and an ultraviolet-visible-near-infrared spectrometer, MAESTRO (Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation). In this paper, the quality of the ACE-FTS version 2.2 NO₂ and NO and the MAESTRO version 1.2 NO₂ data are assessed using other solar occultation measurements (HALOE, SAGE II, SAGE III, POAM III, SCIAMACHY), stellar occultation measurements (GOMOS), limb measurements (MIPAS, OSIRIS), nadir measurements (SCIAMACHY), balloon measurements (SPIRALE, SAOZ) and ground-based measurements (UV-VIS, FTIR). Time differences between the comparison measurements were reduced using either a tight coincidence criterion, or where possible, chemical box models. ACE-FTS NO₂ and NO and the MAESTRO NO₂ are generally consistent with the correlative data. The ACE-FTS NO₂ VMRs agree with the satellite data sets to within about 20% between 25 and 40 km, and suggest a negative bias between 23 and 40 km of about \textminus10%. In comparisons with HALOE, ACE-FTS NO VMRs typically agree to ±8% from 22 to 64 km and to +10% from 93 to 105 km. 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