First measurements of the HCFC-142b trend from atmospheric chemistry experiment (ACE) solar occultation spectra

Rinsland, Curtis P; Chiou, Linda; Boone, Chris; Bernath, Peter; Mahieu, Emmanuel

doi:10.1016/j.jqsrt.2009.05.011

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Article (Scientific journals)

First measurements of the HCFC-142b trend from atmospheric chemistry experiment (ACE) solar occultation spectra

Rinsland, Curtis P; Chiou, Linda; Boone, Chris et al.

2009 • In Journal of Quantitative Spectroscopy and Radiative Transfer, 110 (18), p. 2127-2134

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https://hdl.handle.net/2268/27956

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10.1016/j.jqsrt.2009.05.011

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Keywords :

Remote sensing; Atmospheric chemistry; Composition; Hydrochlorofluorocarbons; Trends; Ozone depletion

Abstract :

[en] The first measurement of the HCFC-142b (CH3CClF2) trend near the tropopause has been derived from volume mixing ratio (VMR) measurements at northern and southern hemisphere mid-latitudes for the 2004-2008 time period from spaceborne solar occultation observations recorded at 0.02 cm(-1) resolution with the ACE (atmospheric chemistry experiment) Fourier transform spectrometer. The HCFC-142b molecule is currently the third most abundant HCFC (hydrochlorofluorocarbon) in the atmosphere and ACE measurements over this time span show a continuous rise in its volume mixing ratio. Monthly average measurements at northern and southern hemisphere mid-latitudes have similar increase rates that are consistent with surface trend measurements for a similar time span. A mean northern hemisphere profile for the time span shows a near constant VMR at 8-20 km altitude range, consistent on average for the same time span with in situ results. The nearly constant vertical VMR profile also agrees with model predictions of a long lifetime in the lower atmosphere. (c) 2009 Elsevier Ltd. All rights reserved.

Disciplines :

Earth sciences & physical geography

Author, co-author :

Rinsland, Curtis P

Chiou, Linda

Boone, Chris

Bernath, Peter

Mahieu, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)

Language :

English

Title :

First measurements of the HCFC-142b trend from atmospheric chemistry experiment (ACE) solar occultation spectra

Publication date :

2009

Journal title :

Journal of Quantitative Spectroscopy and Radiative Transfer

ISSN :

0022-4073

Publisher :

Pergamon Press - An Imprint of Elsevier Science, Oxford, United Kingdom

Volume :

110

Issue :

Pages :

2127-2134

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVR-4WD1C68-5&_user=532038&_coverDate=12%2F31%2F2009&_rdoc=14&_fmt=high&_orig=browse&_srch=doc-info(%23toc%235541%232009%23998899981%231485151%23FLA%23display%23Volume)&_cdi=5541&_sort=d&_docanchor=&_ct=22&_acct=C000026659&_version=1&_urlVersion=0&_userid=532038&md5=52982bbf9a60d3188a981492b2659c7a

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