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Methane and nitrous oxide retrievals from MIPAS-ENVISAT

Plieninger, J.; Clarmann, T.von; Stiller, G.P.; Grabowski, U.; Glatthor, N.; Kellmann, S.; Linden, A.; Haenel, F.; Kiefer, M.; Höpfner, M.; Laeng, A.; Lossow, S.

We present the strongly revised IMK/IAA MIPAS-ENVISAT CH4 and N2O data products for the MIPAS full-resolution (versions V5H-CH4-21 and V5H-N2O-21) and for the reduced-resolution period (versions V5R-CH4-224, V5R-CH4-225, V5R-N2O-224 and V5R-N2O-225). These data sets cover both MIPAS measurement periods from June 2002 until March 2004 and from January 2005 to April 2012. Differences with older retrieval versions which are known to have a high bias are discussed. The usage of the HITRAN 2008 spectroscopic data set leads to lower values for both gases in the lower part of the profile. The improved correction of additive radiance offsets and handling of background radiance continua allows for aerosol contributions at altitudes in the upper stratosphere and above. These changes lead to more plausible values, both in the radiance offset and in the profiles of the continuum absorption coefficients. They also increase the fraction of converged retrievals. Some minor changes were applied to the constraint of the inverse problem, causing small differences in the retrieved profiles, mostly due to the relaxation of off-diagonal regularisation matrix elements for the calculation of jointly retrieved absorption coefficient profiles. ... mehr

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DOI: 10.5445/IR/1000052370
DOI: 10.5194/amt-8-4657-2015
Zitationen: 13
Web of Science
Zitationen: 13
Zitationen: 13
Cover der Publikation
Zugehörige Institution(en) am KIT Fakultät für Physik (PHYSIK)
Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2015
Sprache Englisch
Identifikator ISSN: 1867-1381
KITopen-ID: 1000052370
HGF-Programm 12.04.05 (POF III, LK 01) Trends,Variaility,Large-Scale Processes
Erschienen in Atmospheric Measurement Techniques
Verlag Copernicus Publications
Band 8
Heft 11
Seiten 4657-4670
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Nachgewiesen in Web of Science
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