Methane columns from SCIAMACHY

Methane columns from SCIAMACHY

The dry air column averaged mixing ratio of methane (CH₄), denoted XCH₄, derived from SCIAMACHY near-infrared nadir spectra is a new data product. At the University of Bremen we retrieve XCH₄ using a modified DOAS algorithm called WFM-DOAS. Our processing system is still under development and not yet fully operational and our data products have not yet been fully validated. Here we show some example results obtained with WFM-DOAS version 1.0.

Latest results

XCH4 SCIAMACHY Aug 2003	XCH4 SCIAMACHY Sep 2003

Archives

Documentation

Product:

• Link to product specification document: PDF file
• Link to format description: PDF file
• Link to University of Bremen WFM-DOAS main page: WFM-DOAS main page
• Links to other relevant documents: List of publications

Validation

• Dils, B., De Maziere, M., Blumenstock, T., Hase, F., Kramer, I., Mahieu, E., Demoulin, P., Duchatelet, P., Mellqvist, J., Strandberg, A., Buchwitz, M., Khlystova, I., Schneising, O., Velazco, V., Notholt, J., Sussmann, R., and Stremme, W., Validation of WFM-DOAS v0.6 CO and v1.0 CH4 scientific products using European ground-based FTIR measurements, proceedings of the Third Workshop on the Atmospheric Chemistry Validation of ENVISAT (ACVE-3), 4-7 Dec. 2006, ESA/ESRIN, Frascati, Italy, ESA Publications Division Special Publication SP-642 (CD), 2006. (PDF file )
• Dils et al., Comparison between SCIAMACHY and ground-based FTIR data for total columns of CO, CH4, CO2, and N2O, Atmos. Chem. Phys., 6, 1953-1976, 2006. ( PDF file )
• See also: List of publications

Background information

Main references:

Buchwitz, M., I. Khlystova, O. Schneising, H. Bovensmann, J. P. Burrows, SCIAMACHY/WFM-DOAS tropospheric CO, CH4, and CO2 scientific data products: Validation and recent developments, proceedings of the Third Workshop on the Atmospheric Chemistry Validation of ENVISAT (ACVE-3), 4-7 Dec. 2006, ESA/ESRIN, Frascati, Italy, ESA Publications Division Special Publication SP-642 (CD), 2006. (PDF file )

Buchwitz, M., R. de Beek, S. Noël, J. P. Burrows, H. Bovensmann, O. Schneising, I. Khlystova, M. Bruns, H. Bremer, P. Bergamaschi, S. Körner, M. Heimann, Atmospheric carbon gases retrieved from SCIAMACHY by WFM-DOAS: version 0.5 CO and CH4 and impact of calibration improvements on CO2 retrieval, Atmos. Chem. Phys., 6, 2727-2751, 2006. (PDF file )

Contact details

Acknowledgements

  This work is being or has been funded by the BMBF (German "Bundesministerium für Bildung und Forschung") via DLR-Bonn and GSF/PT-UKF, the EU 5^th framework research project EVERGREEN, the State of Bremen and the University of Bremen, and ESA via GMES/PROMOTE.

Michael Buchwitz, last modification: 5 Jan 2007