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Carbon Monoxide Observations from Ground Stations in France and Europe and Long Trends in the Free Troposphere : Volume 8, Issue 1 (15/02/2008)

By Chevalier, A.

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Book Id: WPLBN0003981323
Format Type: PDF Article :
File Size: Pages 44
Reproduction Date: 2015

Title: Carbon Monoxide Observations from Ground Stations in France and Europe and Long Trends in the Free Troposphere : Volume 8, Issue 1 (15/02/2008)  
Author: Chevalier, A.
Volume: Vol. 8, Issue 1
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2008
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Athier, G., Delmas, R., Cousin, J., Zbinden, R., Gheusi, F., Attié, J., & Chevalier, A. (2008). Carbon Monoxide Observations from Ground Stations in France and Europe and Long Trends in the Free Troposphere : Volume 8, Issue 1 (15/02/2008). Retrieved from http://ebooklibrary.org/


Description
Description: Laboratoire d'Aérologie, University of Toulouse/CNRS, France. Continuous CO measurements performed at 3 high-altitude stations in France are analyzed for the first time. Data are provided by the new PAES (Pollution Atmospherique à l'Echelle Synoptique) network since 2002 for the Puy de Dôme and 2004 for the Pic du Midi and the Donon. CO measurements of 5 another European stations have been analysed to put the PAES stations in an European perspective. The January 2002–April 2005 CO mean levels of surface stations capture the stratification revealed by climatological CO profiles from the airborne observation system MOZAIC (Measurement of OZone and water vapour by Airbus In-service Aircraft). The deviation between the free tropospheric reference MOZAIC and surface data above 2000 m is less than 10% and this deviation can be explained in term of spatial variability, as evidenced by MOPITT CO retrievals at 700 hPa. This suggests that, averaged at a seasonal time scale (4 months), surface data at stations above 2000 m are representative of background CO concentration.

This paper focuses then on trends since the 1980s–1990s. The comparison between old (1982–1983) and recent CO mixing ratio (2005) at the Pic du Midi leads to a 10% decrease, consistent with the continuous data series at Zugspitze (ZSP) from 1991 to 2004. This decrease was found to be mainly due to a negative trend of January–April mean levels. The decrease in CO sources over France and Europe appears to be responsible for that trend. The stable values of June–September mean levels suggest that the summertime oxidizing capacity of the atmosphere related to OH radicals is important enough to counterbalance any CO inputs into the troposphere. Our study shows a recent change in CO evolution since 2000 over Western Europe, with a slowed down decrease in CO concentration. Studying specifically the interactions between CO, CH4 and OH turns out to be needed, however, to find definitive explanations to those observations.


Summary
Carbon monoxide observations from ground stations in France and Europe and long trends in the free troposphere

Excerpt
Deeter, M., Emmons, L., Francis, G., Edwards, D., Gille, J., Warner, J., Khattatov, B., Ziskin, D., Lamarque, J.-F., Ho, S.-P., Yudin, V., Attié, J.-L., Packman, D., Chen, J., Mao, D., Drummond, J., Novelli, P., and Sachse, G.: Evaluation of operational radiances for the Measurements of Pollution in the Troposphere (MOPITT) instrument CO thermal band channels, J. Geophys. Res., 109, (D03308), doi:10.1029/2003JD003970, 2004.; Delmas, R., Megie, G., and Peuch, V.: Physique et Chimie de l'Atmosphère, Belin, 2005.; DeMazière, M., Barret, B., Blumenstock, T., Buchwitz, M., de~Beek, R., Demoulin, P., Fast, H., Gloudemans, A., Griesfeller, A., Griffith, D., Ionov, D., Janssens, K., Jones, N., Mahieu, E., Mellqvist, J., Mittermeier, R., Notholt, J., Rinsland, C., Schrijver, H., Schultz, A., Smale, D., Strandberg, A., Strong, K., Sussmann, R., Warneke, T., and Wood, S.: Comparisons between SCIAMACHY scientific products and ground-based FTIR data for total columns of CO, CH4 and N2O, Proceedings of the Second Workshop on Atmospherioc Chemistry Validation of ENVISAT (ACVE-2), ESA/ESRIN, Frascati, Italy, May 2004 (ESA SP-562, August 2004), ESC02MDM, 2004.; Derwent, R., Jenkin, M., Saunders, S., Pilling, M., Simmonds, P., Passant, N., Dollard, G., Dumitrean, P., and Kent, A.: Photochemical ozone formation in North West Europe and its control, Atmos. Environ., 37, 1983–1991 , 2003.; Dianov-Klokov, V. and Yurganov, L.: Spectroscopic measurements of atmospheric carbon monoxide and methane 2: seasonal variations and long-term trends, J. Atmos. Chem, 8, 153–164, 1989.; Dlugokencky, E., Masarie, K., Lang, P., and Tans, P.: Continuing decline in the growth rate of the atmospheric methane burden, Nature, 393, 447–450, 1998.; Drummond, J. and Mand, G.: The Measurements of Pollution in the Troposphere (MOPITT) Instrument: Overall Performance and Calibration Requirements, J. Atmos. Oceanic Technol., 13, 314, 1996.; Edwards, D., Emmons, L., Hauglustaine, D., Chu, D., Gille, J., Kaufman, Y., Pétron, G., Yurganov, L., Giglio, L., Deeter, M., Yudin, V., Ziskin, D., Warner, J., Lamarque, J.-F., Francis, G., Ho, S., Mao, D., Chen, J., Grechko, E., and Drummond, J.: Observations of carbon monoxide and aerosols from the Terra satellite: Northern Hemisphere variability, J. Geophys. Res., 109, D24202, doi:10.1029/2004JD004727, 2004.; Emmons, L., Deeter, M., Gille, J., Edwards, D., Attié, J.-L., Warner, J., Ziskin, D., Francis, G., Khattatov, B., Yudin, V., Lamarque, J.-F., Ho, S.-P., Mao, D., Chen, J., Drummond, J., Novelli, P., Sachse, G., Coffey, M., Hannigan, J., Gerbig, C., Kawakami, S., Kondo, Y., Takegawa, N., Schlager, H., Baehr, J., and Zieris, H.: Validation of Measurements of Pollution In The Troposphere (MOPITT) CO retrievals with aircraft in situ profiles, J. Geophys. Res., 109, D03309, doi:10.1029/2003JD004101, 2004.; Emmons, L., Pfister, G., Edwards, D., Gille, J., Sachse, G., Blake, D., Wofsy, S., Gerbig, C., Matross, D., and Nédélec, P.: MOPITT Validation exercises during Summer 2004 fields campaigns over North America, J Geophys. Res., 112, D12S02, doi:10.1029/2006JD007833, 2006.; Fischer, H., Lawrence, M., Gurk, C., Hoor, P., Lelieveld, J., Hegglin, M., Brunner, D., and Schiller, C.: Model simulations and aircraft measurements of vertical, seasonal and latitudinal O3 and CO distributions over Europe, Atmos. Chem. Phys., 6, 339–348, 2006.; Gleason, J., Bhartia, P., Herman, J., McPeters, R., Newman, P., Stolarski, R., Flynn, L., Labow, G., Larko, D., Seftor, C., Wellemeyer, C., Komhyr, W., Miller, A., and Planet, W.: Record low global ozone in 1992, Science, 260, 523–526, 1993.; Granier, C., Muller, J.-F., Madronich, S., and Brasseur, G.: Possible causes for the 1990-1993 decrease in the global tropospheric CO abundances: a three-dimensional sensitivity study, Atmos. Environ., 30, 1673–1682, 1996.; Guenther, A., Hewi

 

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