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https://doi.org/10.5194/acpd-8-4499-2008
© Author(s) 2008. This work is licensed under
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the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
https://doi.org/10.5194/acpd-8-4499-2008
© Author(s) 2008. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
04 Mar 2008
Status: this preprint was under review for the journal ACP. A revision for further review has not been submitted.
Validation of water vapour profiles from the Atmospheric Chemistry Experiment (ACE)
M. R. Carleer
Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles, Brussels, Belgium
C. D. Boone
Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada
K. A. Walker
Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada
Department of Physics, University of Toronto, Toronto, Ontario, Canada
P. F. Bernath
Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada
Department of Chemistry, University of York, UK
K. Strong
Department of Physics, University of Toronto, Toronto, Ontario, Canada
R. J. Sica
Department of Physics and Astronomy, University of Western Ontario, London, Ontario, Canada
C. E. Randall
Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USA
H. Vömel
Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
J. Kar
Department of Physics, University of Toronto, Toronto, Ontario, Canada
M. Höpfner
Forschungszentrum Karlsruhe and Universität Karlsruhe, Institut für Meteorologie und Klimaforschung, Karlsruhe, Germany
M. Milz
Forschungszentrum Karlsruhe and Universität Karlsruhe, Institut für Meteorologie und Klimaforschung, Karlsruhe, Germany
now at: Institutionen för Rymdvetenskap, Luleå Tekniska Universitet, Kiruna, Sweden
T. von Clarmann
Forschungszentrum Karlsruhe and Universität Karlsruhe, Institut für Meteorologie und Klimaforschung, Karlsruhe, Germany
R. Kivi
Finnish Meteorological Institute, Arctic Research Center, Sodankylä, Finland
J. Valverde-Canossa
Universidad Nacional, Heredia, Costa Rica
C. E. Sioris
Environment Canada, Downsview, Ontario, Canada
M. R. M. Izawa
Department of Earth Sciences, University of Western Ontario, London, Ontario, Canada
E. Dupuy
Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada
C. T. McElroy
Department of Physics, University of Toronto, Toronto, Ontario, Canada
Environment Canada, Downsview, Ontario, Canada
J. R. Drummond
Department of Physics, University of Toronto, Toronto, Ontario, Canada
Department of Physics & Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada
C. R. Nowlan
Department of Physics, University of Toronto, Toronto, Ontario, Canada
J. Zou
Department of Physics, University of Toronto, Toronto, Ontario, Canada
F. Nichitiu
Department of Physics, University of Toronto, Toronto, Ontario, Canada
S. Lossow
Department of Meteorology, Stockholm University, Stockholm, Sweden
J. Urban
Department of Radio and Space Science, Chalmers University of Technology, Göteborg, Sweden
D. Murtagh
Department of Radio and Space Science, Chalmers University of Technology, Göteborg, Sweden
D. G. Dufour
Picomole Instruments Inc., Edmonton, Alberta, Canada
Abstract. The Atmospheric Chemistry Experiment (ACE) mission was launched in August 2003 to sound the atmosphere by solar occultation. Water vapour (H2O), one of the most important molecules for climate and atmospheric chemistry, is one of the key species provided by the two principal instruments, the infrared Fourier Transform Spectrometer (ACE-FTS) and the MAESTRO UV-Visible spectrometer (ACE-MAESTRO). The first instrument performs measurements on several lines in the 1362–2137 cm−1 range, from which vertically resolved H2O concentration profiles are retrieved, from 7 to 90 km altitude. ACE-MAESTRO measures profiles using the water absorption band in the near infrared part of the spectrum at 926.0–969.7 nm. This paper presents a comprehensive validation of the ACE-FTS profiles. We have compared the H2O volume mixing ratio profiles with space-borne (SAGE II, HALOE, POAM III, MIPAS, SMR) observations and measurements from balloon-borne frostpoint hygrometers and a ground based lidar. We show that the ACE-FTS measurements provide H2O profiles with small retrieval uncertainties in the stratosphere (better than 5% from 15 to 70 km, gradually increasing above). The situation is unclear in the upper troposphere, due mainly to the high variability of the water vapour volume mixing ratio in this region. A new water vapour data product from the ACE-MAESTRO (Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation) is also presented and initial comparisons with ACE-FTS are discussed.
How to cite. Carleer, M. R., Boone, C. D., Walker, K. A., Bernath, P. F., Strong, K., Sica, R. J., Randall, C. E., Vömel, H., Kar, J., Höpfner, M., Milz, M., von Clarmann, T., Kivi, R., Valverde-Canossa, J., Sioris, C. E., Izawa, M. R. M., Dupuy, E., McElroy, C. T., Drummond, J. R., Nowlan, C. R., Zou, J., Nichitiu, F., Lossow, S., Urban, J., Murtagh, D., and Dufour, D. G.: Validation of water vapour profiles from the Atmospheric Chemistry Experiment (ACE), Atmos. Chem. Phys. Discuss., 8, 4499–4559, https://doi.org/10.5194/acpd-8-4499-2008, 2008.
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M. R. Carleer et al.
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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RC S1132: 'Referee Comment', Anonymous Referee #1, 31 Mar 2008
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RC S1802: 'Referee comment', Anonymous Referee #2, 20 Apr 2008
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AC S3042: 'Response to anonymous referees', Michel Carleer, 27 May 2008
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
- Printer-friendly version
- Supplement
-
RC S1132: 'Referee Comment', Anonymous Referee #1, 31 Mar 2008
-
RC S1802: 'Referee comment', Anonymous Referee #2, 20 Apr 2008
-
AC S3042: 'Response to anonymous referees', Michel Carleer, 27 May 2008
M. R. Carleer et al.
M. R. Carleer et al.
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