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Iterative maximum a posteriori (IMAP)-DOAS for retrieval of strongly absorbing trace gases: Model studies for CH_4 and CO_2 retrieval from near infrared spectra of SCIAMACHY onboard ENVISAT

Frankenberg, C. and Platt, U. and Wagner, T. (2005) Iterative maximum a posteriori (IMAP)-DOAS for retrieval of strongly absorbing trace gases: Model studies for CH_4 and CO_2 retrieval from near infrared spectra of SCIAMACHY onboard ENVISAT. Atmospheric Chemistry and Physics, 5 (1). pp. 9-22. ISSN 1680-7316. doi:10.5194/acp-5-9-2005. https://resolver.caltech.edu/CaltechAUTHORS:20150511-131748768

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Abstract

In the past, differential optical absorption spectroscopy (DOAS) has mostly been employed for atmospheric trace gas retrieval in the UV/Vis spectral region. New spectrometers such as SCIAMACHY onboard ENVISAT also provide near infrared channels and thus allow for the detection of greenhouse gases like CH_4, CO_2, or N_2O. However, modifications of the classical DOAS algorithm are necessary to account for the idiosyncrasies of this spectral region, i.e. the temperature and pressure dependence of the high resolution absorption lines. Furthermore, understanding the sensitivity of the measurement of these high resolution, strong absorption lines by means of a non-ideal device, i.e. having finite spectral resolution, is of special importance. This applies not only in the NIR, but can also prove to be an issue for the UV/Vis spectral region.


Item Type:Article
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URLURL TypeDescription
http://dx.doi.org/10.5194/acp-5-9-2005DOIArticle
http://www.atmos-chem-phys.net/5/9/2005/acp-5-9-2005.htmlPublisherArticle
ORCID:
AuthorORCID
Frankenberg, C.0000-0002-0546-5857
Additional Information:© 2005 Author(s). This work is licensed under a Creative Commons License. Received: 2 August 2004. Published in Atmos. Chem. Phys. Discuss.: 29 September 2004. Revised: 17 December 2004. Accepted: 23 December 2004. Published: 12 January 2005. Although this study has not yet focussed on actual results of the analysis of SCIAMACHY spectra, the authors wish to thank all people involved in the SCIAMACHY and ENVISAT mission, especially ESA/ESTEC, DLR, SRON and of course the IUP Bremen team of J. P. Burrows without whom SCIAMACHY would not have been possible. For very helpful comments we would like to thank G. C. Toon and H. Bösch from Jet Propulsion Laboratory as well as K. Pfeilsticker from IUP Heidelberg. Edited by: P. Monks
Issue or Number:1
DOI:10.5194/acp-5-9-2005
Record Number:CaltechAUTHORS:20150511-131748768
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150511-131748768
Official Citation:Frankenberg, C., Platt, U., and Wagner, T.: Iterative maximum a posteriori (IMAP)-DOAS for retrieval of strongly absorbing trace gases: Model studies for CH4 and CO2 retrieval from near infrared spectra of SCIAMACHY onboard ENVISAT, Atmos. Chem. Phys., 5, 9-22, doi:10.5194/acp-5-9-2005, 2005.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57418
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:11 May 2015 21:11
Last Modified:10 Nov 2021 21:12

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