References

ACP

Atmospheric Chemistry and Physics

ACP

1680-7324

Copernicus GmbH

Göttingen, Germany

10.5194/acp-8-2569-2008

CO measurements from the ACE-FTS satellite instrument: data analysis and validation using ground-based, airborne and spaceborne observations

Clerbaux

¹ George

¹ Turquety

¹ Walker

K. A.

² ³ Barret

⁴ Bernath

² ⁵ Boone

² Borsdorff

⁶ Cammas

J. P.

⁴ Catoire

⁷ Coffey

⁸ Coheur

P.-F.

⁹ Deeter

⁸ De Mazière

¹⁰ Drummond

¹¹ Duchatelet

¹² Dupuy

² de Zafra

¹³ Eddounia

¹ Edwards

D. P.

⁸ Emmons

⁸ Funke

¹⁴ Gille

⁸ Griffith

D. W. T.

¹⁵ Hannigan

⁸ Hase

¹⁶ Höpfner

¹⁶ Jones

¹⁵ Kagawa

¹⁷ Kasai

¹⁸ Kramer

¹⁶ Le Flochmoën

⁴ Livesey

N. J.

¹⁹ López-Puertas

¹⁴ Luo

²⁰ Mahieu

¹² Murtagh

²¹ Nédélec

⁴ Pazmino

¹ Pumphrey

²² Ricaud

⁴ Rinsland

C. P.

²³ Robert

⁷ Schneider

¹⁶ Senten

¹⁰ Stiller

¹⁶ Strandberg

²¹ Strong

³ Sussmann

⁶ Thouret

⁴ Urban

²¹ Wiacek

Université Paris 6, CNRS, Service d'Aéronomie/IPSL, Paris, France

Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1, Canada

Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S 1A7, Canada

Laboratoire d'Aérologie UMR 5560, Observatoire Midi-Pyrénées, Toulouse, France

Department of Chemistry, University of York, Heslington, York YO10 5DD, UK

Forschungszentrum Karlsruhe, IMK-IFU, Garmisch-Partenkirchen, Germany

Laboratoire de Physique et Chimie de l'Environnement, CNRS, Université d'Orléans, Orléans, France

National Center for Atmospheric Research, Boulder, CO, USA

Spectroscopie de l'atmosphère, Chimie Quantique et Photophysique, Université Libre de Bruxelles (U.L.B.), Brussels, Belgium. P.-F. Coheur is Research associate with the FRS-F.N.R.S, Belgium

Belgian Institute for Space Aeronomy, Brussels, Belgium

Department of Physics & Atmospheric Science, Dalhousie University, Halifax, Canada

Université de Liège ULg, Institute of Astrophysics and Geophysics, Liège, Belgium

Department of Physics and Astronomy, State Univ. of New York at Stony Brook, USA

Instituto de Astrofísica, Andalucía (CSIC), Granada, Spain

Department of Chemistry, University of Wollongong, Wollongong, New South Wales, Australia

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

Fujitsu FIP Corporation, Tokyo, Japan

National Institute of Information and Communications Technology, Tokyo, Japan

Microwave Atmospheric Science Team, Jet Propulsion Laboratory, CA, USA

Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA

Chalmers University of Technology, Göteborg, Sweden

School of GeoSciences, Edinburgh, Scotland

NASA Langley Research Center, Hampton, Virginia, USA

16 05 2008

8 9 2569 2594

This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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The Atmospheric Chemistry Experiment (ACE) mission was launched in August 2003 to sound the atmosphere by solar occultation. Carbon monoxide (CO), a good tracer of pollution plumes and atmospheric dynamics, is one of the key species provided by the primary instrument, the ACE-Fourier Transform Spectrometer (ACE-FTS). This instrument performs measurements in both the CO 1-0 and 2-0 ro-vibrational bands, from which vertically resolved CO concentration profiles are retrieved, from the mid-troposphere to the thermosphere. This paper presents an updated description of the ACE-FTS version 2.2 CO data product, along with a comprehensive validation of these profiles using available observations (February 2004 to December 2006). We have compared the CO partial columns with ground-based measurements using Fourier transform infrared spectroscopy and millimeter wave radiometry, and the volume mixing ratio profiles with airborne (both high-altitude balloon flight and airplane) observations. CO satellite observations provided by nadir-looking instruments (MOPITT and TES) as well as limb-viewing remote sensors (MIPAS, SMR and MLS) were also compared with the ACE-FTS CO products. We show that the ACE-FTS measurements provide CO profiles with small retrieval errors (better than 5% from the upper troposphere to 40 km, and better than 10% above). These observations agree well with the correlative measurements, considering the rather loose coincidence criteria in some cases. Based on the validation exercise we assess the following uncertainties to the ACE-FTS measurement data: better than 15% in the upper troposphere (8–12 km), than 30% in the lower stratosphere (12–30 km), and than 25% from 30 to 100 km.

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