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Global peroxyacetyl nitrate (PAN) retrieval in the upper troposphere from limb emission spectra of the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS)

Glatthor, N.; Clarmann, T.von; Fischer, H.; Funke, B.; Grabowski, U.; Höpfner, M.; Kellmann, S.; Kiefer, M.; Linden, A.; Milz, M.; Steck, T.; Stiller, G. P.

We use limb emission spectra of the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) onboard the ENVIronmental SATellite (ENVISAT) to derive the first global distribution of peroxyacetyl nitrate (PAN) in the upper troposphere. PAN is generated in tropospheric air masses polluted by fuel combustion or biomass burning and acts as a reservoir and carrier of NOx in the cold free troposphere. PAN exhibits continuum-like broadband structures in the mid-infrared region and was retrieved in a contiguous analysis window covering the wavenumber region 775– 800 cm−1. The interfering species CCl4, HCFC-22, H2O, ClONO2, CH3CCl3 and C2H2 were fitted along with PAN, whereas pre-fitted profiles were used to model the contribution of other contaminants like ozone. Sensitivity tests consisting in retrieval without consideration of PAN demonstrated the existence of PAN signatures in MIPAS spectra obtained in polluted air masses. The analysed dataset consists of 10 days between 4 October and 1 December 2003. This period covers the end of the biomass burning season in South America and South and East Africa, in which generally large amo ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000071685
Veröffentlicht am 24.05.2018
DOI: 10.5194/acp-7-2775-2007
Zitationen: 43
Web of Science
Zitationen: 39
Seitenaufrufe: 64
seit 21.05.2018
Downloads: 44
seit 04.06.2018
Zugehörige Institution(en) am KIT Fakultät für Physik (PHYSIK)
Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2007
Sprache Englisch
Identifikator ISSN: 1680-7324, 1680-7316
KITopen-ID: 1000071685
HGF-Programm 12.04.02 (POF I, LK 01)
Erschienen in Atmospheric chemistry and physics
Band 7
Heft 11
Seiten 2775–2787
Nachgewiesen in Web of Science
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