Validation of ACE-FTS v2.2 methane profiles from the upper troposphere to the lower mesosphere
oleh: M. De Mazière, C. Vigouroux, P. F. Bernath, P. Baron, T. Blumenstock, C. Boone, C. Brogniez, V. Catoire, M. Coffey, P. Duchatelet, D. Griffith, J. Hannigan, Y. Kasai, I. Kramer, N. Jones, E. Mahieu, G. L. Manney, C. Piccolo, C. Randall, C. Robert, C. Senten, K. Strong, J. Taylor, C. Tétard, K. A. Walker, S. Wood
| Format: | Article |
|---|---|
| Diterbitkan: | Copernicus Publications 2008-05-01 |
Deskripsi
The ACE-FTS (Atmospheric Chemistry Experiment &ndash; 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 CH<sub>4</sub> 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 &ndash; lower stratosphere, and within 25% in the middle and higher stratosphere up to the lower mesosphere (&lt;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.