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The evaluation of SCIAMACHY CO and CH_4 scientific data products, using ground-based FTIR measurements

Dils, B. and De Mazière, M. and Müller, J. F. and Buchwitz, M. and de Beek, R. and Frankenberg, C. and Gloudemans, A. and Schrijver, H. and Van den Broek, M. (2006) The evaluation of SCIAMACHY CO and CH_4 scientific data products, using ground-based FTIR measurements. In: Proceedings of the First Atmospheric Science Conference. ESA Special Publication. No.628. European Space Agency , Noordwijk, Netherlands, pp. 1-6. ISBN 9789290929390.

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In the framework of the European EVERGREEN project, three scientific algorithms, namely WFM-DOAS, IMAPDOAS and IMLM, have been developed to retrieve the total column amounts of key atmospheric trace gases including CO and CH_4 from SCIAMACHY nadir observations in its near-infrared channels. These channels offer the capability to detect trace gases in the planetary boundary layer, potentially making the associated retrieval products suited for regional source-sink studies. The retrieval products of these three algorithms, in their present status of development, have been compared to independent data from a ground-based quasi-global network of Fourier-transform infrared (FTIR) spectrometers, for the year 2003. Comparisons have been made for individual data, as well as for monthly averages. To maximize the number of coincidences that satisfy the temporal and spatial collocation criteria, the individual SCIAMACHY data points have been compared with a 3rd order polynomial interpolation of the ground-based data with time. Particular attention has been paid to the question whether the products reproduce correctly the seasonal and latitudinal variabilities of the target species. We present an overall assessment of the data quality of the currently available latest versions of the CO and CH4 total column products from the three scientific retrieval algorithms.

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Frankenberg, C.0000-0002-0546-5857
Additional Information:© 2006 European Space Agency. This work has been performed in the frame of the Envisat AOID126 ‘Validation of ENVISAT-1 level-2 products related to lower atmosphere O_3 and NOy', and the EC project EVERGREEN. It has been possible thanks to financial support from ESA, the European Commission, the Belgian Federal Science Policy Offices, the Bundesministerium für Bildung und Forschung (BMBF) via DLR-Bonn (50EE0027) and PRODEX. We would also like to thank the various organizations supporting the essential infrastructures and facilities needed to perform the ground-based observations used here. We would also like to thank the people who performed the FTIR measurements and supplied us with the data, namely Blumenstock T., Demoulin P., Duchatelet P., Fast H., Griffith D., Jones N., Kerzenmacher T., Mahieu E., Mellqvist J., Mikuteit S., Mittermeier R. L., Notholt J., Smale D., Strandberg A., Stremme W., Strong K., Sussmann R., Taylor J., Warneke T., Wiacek A., Wood S.. The work could not have been carried out without the scientific and technical support from J.-C. Lambert, T. Jacobs, P. Olamba, J. Granville and P. Gérard at the Belgian Institute for Space Aeronomy.
Funding AgencyGrant Number
European Space Agency (ESA)UNSPECIFIED
European CommissionUNSPECIFIED
Belgian Federal Science Policy OfficeUNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)50EE0027
Series Name:ESA Special Publication
Issue or Number:628
Record Number:CaltechAUTHORS:20150514-140900340
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57536
Deposited By: Tony Diaz
Deposited On:14 May 2015 21:33
Last Modified:03 Oct 2019 08:26

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