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

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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Author De Mazière, M.
Vigouroux, C.
Bernath, P.
Baron, P.
Blumenstock, T.
Boone, C.
Brogniez, C.
Catoire, V.
Coffey, Michael T.
Duchatelet, P.
Griffith, D.
Hannigan, James W.
Kasai, Y.
Kramer, I.
Jones, N.
Mahieu, E.
Manney, G.
Piccolo, C.
Randall, C.
Robert, C.
Senten, C.
Strong, K.
Taylor, J.
Tétard, C.
Walker, K.
Wood, S.
Publisher UCAR/NCAR - Library
Publication Date 2008-05-07T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Resource Version N/A
Topic Category geoscientificInformation
Progress N/A
Metadata Date 2025-07-17T15:58:14.860636
Metadata Record Identifier edu.ucar.opensky::articles:6593
Metadata Language eng; USA
Suggested Citation De Mazière, M., Vigouroux, C., Bernath, P., Baron, P., Blumenstock, T., Boone, C., Brogniez, C., Catoire, V., Coffey, Michael T., Duchatelet, P., Griffith, D., Hannigan, James W., Kasai, Y., Kramer, I., Jones, N., Mahieu, E., Manney, G., Piccolo, C., Randall, C., Robert, C., Senten, C., Strong, K., Taylor, J., Tétard, C., Walker, K., Wood, S.. (2008). Validation of ACE-FTS v2.2 methane profiles from the upper troposphere to lower mesosphere. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d7ht2pj8. Accessed 11 August 2025.

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