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Verlagsausgabe
DOI: 10.5445/IR/1000041627
Veröffentlicht am 11.05.2018
Originalveröffentlichung
DOI: 10.5194/acp-13-2531-2013
Scopus
Zitationen: 9
Web of Science
Zitationen: 8

Lifetime and production rate of NOx in the upper stratosphere and lower mesosphere in the polar spring/summer after the solar proton event in October - November 2003

Friederich, F.; Clarmann, T. von; Funke, B.; Nieder, H.; Orphal, J.; Sinnhuber, M.; Stiller, G.P.; Wissing, J.M.

Abstract:
We present altitude-dependent lifetimes of NOx, determined with MIPAS/ENVISAT (the Michelson Interferometer for Passive Atmospheric Sounding/the European Environment Satellite), for the Southern polar region after the solar proton event in October–November 2003. Between 50° S and 90° S and decreasing in altitude they range from about two days at 64 km to about 20 days at 44 km. The lifetimes are controlled by transport, mixing and photochemistry. We infer estimates of dynamical lifetimes by comparison of the observed decay to photochemical lifetimes calculated with the SLIMCAT 3-D Model. Photochemical loss contributes to the observed NOx depletion by 0.1% at 44 km, increasing with altitude to 45% at 64 km. In addition, we show the correlation of modelled ionization rates and observed NOx densities under consideration of the determined lifetimes of NOx, and calculate altitudedependent effective production rates of NOx due to ionization. For that we compare ionization rates of the AIMOS data base with the MIPAS measurements from 15 October–31 December 2003. We derive effective NOx-production rates to be applied to the AIMOS ionization ... mehr


Zugehörige Institution(en) am KIT Fakultät für Physik (PHYSIK)
Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2013
Sprache Englisch
Identifikator ISSN: 1680-7316, 1680-7324
URN: urn:nbn:de:swb:90-416273
KITopen ID: 1000041627
HGF-Programm 12.04.03; LK 01
Erschienen in Atmospheric chemistry and physics
Band 13
Heft 5
Seiten 2531-2539
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