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Title: Growth rates of stratospheric HCFC-22
Authors: Moore, David P.
Remedios, John J.
First Published: 14-Jan-2008
Publisher: Copernicus Publications on behalf of the European Geosciences Union
Citation: Atmospheric Chemistry And Physics, 2008, 8 (1), pp. 73-82 (10)
Abstract: The Michelson Interferometer for Passive Atmospheric Sounding onboard ENVISAT (MIPAS-E) offers the opportunity to detect and spectrally resolve many atmospheric minor constituents affecting atmospheric chemistry. In this paper, we describe an algorithm produced to retrieve HCFC–22 profiles from MIPAS-E measurements made in 2003 and present results from this scheme between 300 and 50 mb. By comparison with ATMOS (AT–3) version 3 data, we find a mean Northern Hemisphere mid-latitude (20–50° N) HCFC–22 growth rate between 1994 and 2003 of 5.4±0.7 pptv/yr in the lower stratosphere (LS) and a mean LS Southern Hemisphere growth rate (60–80° S) of 6.0±0.7 pptv/yr in the same period. We test the feasibility of using a global data set to estimate the chemical lifetime of HCFC–22 in the LS and we derive this for two regions: 20–50° N (246±38 years) and 60–80° S (274±34 years). From these data we note a global LS lifetime of 260±25 years, significantly longer than previous estimates.
DOI Link: 10.5194/acp-8-73-2008
ISSN: 1680-7316
eISSN: 1680-7324
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © Author(s) 2008. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License (
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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