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Global distributions of CO₂ volume mixing ratio in the middle and upper atmosphere from daytime MIPAS high-resolution spectra

Jurado-Navarro, Á.A.; López-Puertas, M.; Funke, B.; García-Comas, M.; Gardini, A.; González-Galindo, F.; Stiller, G.P.; Von Clarmann, T.; Grabowski, U.; Linden, A.

Abstract:
Global distributions of the CO₂ vmr (volume mixing ratio) in the mesosphere and lower thermosphere (from 70 up to  ∼  140 km) have been derived from high-resolution limb emission daytime MIPAS (Michelson Interferometer for Passive Atmospheric Sounding) spectra in the 4.3 µm region. This is the first time that the CO₂ vmr has been retrieved in the 120–140 km range. The data set spans from January 2005 to March 2012. The retrieval of CO₂ has been performed jointly with the elevation pointing of the line of sight (LOS) by using a non-local thermodynamic equilibrium (non-LTE) retrieval scheme. The non-LTE model incorporates the new vibrational–vibrational and vibrational–translational collisional rates recently derived from the MIPAS spectra by [Jurado-Navarro et al.(2015)]. It also takes advantage of simultaneous MIPAS measurements of other atmospheric parameters (retrieved in previous steps), such as the kinetic temperature (derived up to  ∼  100 km from the CO₂ 15 µm region of MIPAS spectra and from 100 up to 170 km from the NO 5.3 µm emission of the same MIPAS spectra) and the O₃ measurements (up to  ∼  100 km). The latter is very i ... mehr


Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.5194/amt-9-6081-2016
ISSN: 1867-1381, 1867-8548
URN: urn:nbn:de:swb:90-649691
KITopen ID: 1000064969
HGF-Programm 12.04.05; LK 01
Erschienen in Atmospheric measurement techniques
Band 9
Heft 12
Seiten 6081-6100
Lizenz CC BY 3.0 DE: Creative Commons Namensnennung 3.0 Deutschland
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