Article (Scientific journals)
The exploitation of ground-based Fourier transform infrared observations for the evaluation of tropospheric trends of greenhouse gases over Europe
De Mazière, Martine; Vigouroux, Corinne; Gardiner, Tom et al.
2005In Environmental Sciences, 2 (2-3), p. 283-293
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Keywords :
FTIR remote sensing; tropospheric trends; chemistry-transport modelling
Abstract :
[en] Solar absorption measurements using Fourier transform infrared (FTIR) spectrometry carry information about the atmospheric abundances of many constituents, including non-CO2 greenhouse gases. Such observations have regularly been made for many years as a contribution to the Network for the Detection of Stratospheric Change (NDSC). They are the only ground-based remote sensing observations available nowadays that carry information about a number of greenhouse gases in the free troposphere. This work focuses on the discussion of the information content of FTIR long-term monitoring data of some direct and indirect greenhouse gases (CH4, N2O, O3 and CO and C2H6, respectively), at six NDSC stations in Western Europe. This European FTIR network covers the polar to subtropical regions. At several stations of the network, the observations span more than a decade. Existing spectral time series have been reanalyzed according to a common optimized retrieval strategy, in order to derive distinct tropospheric and stratospheric abundances for the above-mentioned target gases. A bootstrap resampling method has been implemented to evaluate trends of the tropospheric burdens of the target gases, including their uncertainties. In parallel, simulations of the target time series are being made with the Oslo CTM2 model: comparisons between the model results and the observations provide valuable information to improve the model and, in particular, to optimize emission estimates that are used as inputs to the model simulations. The work is being performed within the EC project UFTIR. The paper focuses on N2O for which the first trend results have been obtained.
Disciplines :
Earth sciences & physical geography
Author, co-author :
De Mazière, Martine
Vigouroux, Corinne
Gardiner, Tom
Coleman, M.
Woods, Peter
Ellingsen, Kjerstin
Gauss, Michael
Isaksen, Ivar
Blumenstock, Thomas
Hase, Frank
Kramer, Isabell
Camy-Peyret, Claude
Chelin, Pascale
Mahieu, Emmanuel  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
Demoulin, Philippe ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
Duchatelet, Pierre ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe infra-rouge de phys. atmosph. et solaire (GIRPAS)
Mellqvist, Johan
Strandberg, Anders
Velazco, Voltaire
Notholt, Justus
Sussmann, Ralf
Stremme, Wolfgang
Rockmann, A.
More authors (13 more) Less
Language :
English
Title :
The exploitation of ground-based Fourier transform infrared observations for the evaluation of tropospheric trends of greenhouse gases over Europe
Publication date :
2005
Journal title :
Environmental Sciences
ISSN :
1569-3430
Publisher :
Taylor & Francis Ltd
Volume :
2
Issue :
2-3
Pages :
283-293
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 18 December 2008

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