Fractional release factors of long-lived halogenated organic compounds in the tropical stratosphere

  • Fractional release factors (FRFs) of organic trace gases are time-independent quantities that influence the calculation of Global Warming Potentials and Ozone Depletion Potentials. We present the first set of vertically resolved FRFs for 15 long-lived halo carbons in the tropical stratosphere up to 34 km altitude. They were calculated from measurements on air samples collected on board balloons and a high altitude aircraft. We compare the derived dependencies of FRFs on the mean stratospheric transit times (the so-called mean ages of air) with similarly derived FRFs originating from measurements at higher latitudes and find significant differences. Moreover a comparison with averaged FRFs currently used by the World Meteorological Organisation revealed the latter to be imprecise measures due to their observed vertical and latitudinal variability. The presented data set could thus be used to improve future ozone level and climate projections.

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Author:Johannes Christian Laube, Andreas EngelORCiD, Harald BönischORCiDGND, Tanja Möbius, William T. Sturges, Marc Braß, Thomas RöckmannORCiDGND
Parent Title (English):Atmospheric chemistry and physics. Discussions
Place of publication:Katlenburg-Lindau
Document Type:Article
Year of Completion:2009
Date of first Publication:2009/09/28
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2018/04/03
Page Number:25
First Page:20283
Last Page:20307
© Author(s) 2009. This work is distributed under the Creative Commons Attribution 3.0 License.
Begutachteter Artikel erschienen in: Atmospheric chemistry and physics, 10.2010, Nr. 3, S. 1093-1103, doi:10.5194/acp-10-1093-2010, dazu Corrigendum erschienen in: Atmospheric chemistry and physics, 10.2010, Nr. 10, S. 4975, doi:10.5194/acp-10-4975-2010
Institutes:Geowissenschaften / Geographie / Geowissenschaften
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften
Licence (German):License LogoCreative Commons - Namensnennung 3.0