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Volume 8, issue 9 | Copyright

Special issue: Validation results for the Atmospheric Chemistry Experiment...

Atmos. Chem. Phys., 8, 2421-2435, 2008
https://doi.org/10.5194/acp-8-2421-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.

  07 May 2008

07 May 2008

Validation of ACE-FTS v2.2 methane profiles from the upper troposphere to the lower mesosphere

M. De Mazière1, C. Vigouroux1, P. F. Bernath2,14, P. Baron3, T. Blumenstock4, C. Boone2, C. Brogniez5, V. Catoire6, M. Coffey7, P. Duchatelet8, D. Griffith9, J. Hannigan7, Y. Kasai3, I. Kramer4, N. Jones9, E. Mahieu8, G. L. Manney10,15, C. Piccolo11, C. Randall16, C. Robert6, C. Senten1, K. Strong12, J. Taylor12, C. Tétard5, K. A. Walker2,12, and S. Wood13 M. De Mazière et al.
  • 1Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
  • 2Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada
  • 3National Institute of Information and Communications Technology (NICT), Tokyo, Japan
  • 4IMK-ASF, Forschungszentrum Karlsruhe and University Karlsruhe, Karlsruhe, Germany
  • 5Laboratoire d'Optique Atmosphérique, Université des sciences et technologies de Lille, Lille, France
  • 6Laboratoire de Physique et Chimie de l'Environnement, CNRS – Université d'Orléans, Orléans, France
  • 7National Center for Atmospheric Research (NCAR), Boulder, CO, USA
  • 8Institut d'Astrophysique et de Géophysique, Université de Liège, Liège, Belgium
  • 9School of Chemistry, University of Wollongong, Wollongong, Australia
  • 10Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
  • 11Atmospheric, Oceanic and Planetary Physics, University of Oxford, Oxford, UK
  • 12Department of Physics, University of Toronto, Toronto, Ontario, Canada
  • 13National Institute of Water and Atmospheric Research (NIWA), Lauder, New-Zealand
  • 14Department of Chemistry, University of York, Heslington, York, UK
  • 15New Mexico Institute of Mining and Technology, Socorro, NM, USA
  • 16Laboratory for Atmospheric and Space Physics and Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, USA

Abstract. The ACE-FTS (Atmospheric Chemistry Experiment – Fourier Transform Spectrometer) solar occultation instrument that was launched onboard the Canadian SCISAT-1 satellite in August 2003 is measuring vertical profiles from the upper troposphere to the lower mesosphere for a large number of atmospheric constituents. Methane is one of the key species. The version v2.2 data of the ACE-FTS CH4 data have been compared to correlative satellite, balloon-borne and ground-based Fourier transform infrared remote sensing data to assess their quality. The comparison results indicate that the accuracy of the data is within 10% in the upper troposphere – lower stratosphere, and within 25% in the middle and higher stratosphere up to the lower mesosphere (<60 km). The observed differences are generally consistent with reported systematic uncertainties. ACE-FTS is also shown to reproduce the variability of methane in the stratosphere and lower mesosphere.

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