Reference : Line narrowing effect on the retrieval of HF and HCl vertical profiles from ground-based...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/2395
Line narrowing effect on the retrieval of HF and HCl vertical profiles from ground-based FTIR measurements
English
Barret, Brice [> > > >]
Hurtmans, Daniel [> > > >]
Carleer, Michel R. [> > > >]
De Mazière, Martine [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS) >]
Mahieu, Emmanuel mailto [> > > >]
Coheur, Pierre-François [> > > >]
1-Nov-2005
Journal of Quantitative Spectroscopy & Radiative Transfer
Pergamon-Elsevier Science Ltd
95
4
499-519
Yes (verified by ORBi)
International
0022-4073
Oxford
[en] atmospheric infrared spectroscopy ; collision-induced line narrowing ; retrieval techniques ; hydrogen chloride ; hydrogen fluoride
[en] Collision-induced line narrowing, which has been discovered in the 1950s and investigated thoroughly in the laboratory since then, has yet never been taken into account in the spectroscopic remote sensing of the atmosphere. This work investigates the effect of collision-induced line narrowing onto the retrieval of HCl and HF vertical profiles from ground-based solar absorption FTIR measurements made at the NDSC station of the Jungfraujoch (46.5 degrees N, 8 degrees E and 3580 m above see level). The retrievals are performed with the Atmosphit software, recently developed at the Universite Libre de Bruxelles. It is presented in this paper for the first time and is validated against the widely used SFIT2 software. The impact of the line narrowing onto the retrieval of HCl and HF vertical profiles is examined relying on careful information content and error budget analyses. We report that the effect is relatively weak for HCl but significant for HF. Confirmation of the need to take the line narrowing into account for the retrieval of vertical profiles from ground-based FTIR spectra is given by comparison with data from the HALOE space borne instrument, rather insensitive to this spectroscopic effect. (c) 2005 Elsevier Ltd. All rights reserved.
http://hdl.handle.net/2268/2395
10.1016/j.jqsrt.2004.12.005
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVR-4FHJVYJ-1&_user=532038&_coverDate=11%2F01%2F2005&_rdoc=6&_fmt=high&_orig=browse&_srch=doc-info(%23toc%235541%232005%23999049995%23596248%23FLA%23display%23Volume)&_cdi=5541&_sort=d&_docanchor=&_ct=10&_acct=C000026659&_version=1&_urlVersion=0&_userid=532038&md5=9c27a739f4ca6a270ebe440a8fef6b35

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