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          Institute: MPI für Meteorologie     Collection: Atmosphere in the Earth System     Display Documents



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ID: 224145.0, MPI für Meteorologie / Atmosphere in the Earth System
Evaluation of CO simulations and the analysis of the CO budget for Europe
Authors:Pfister, G.; Petron, G.; Emmons, L. K.; Gille, J. C.; Edwards, D. P.; Lamarque, J. F.; Attie, J. L.; Granier, Claire; Novelli, P. C.
Language:English
Date of Publication (YYYY-MM-DD):2004-10-06
Title of Journal:Journal of Geophysical Research-Atmospheres
Journal Abbrev.:J. Geophys. Res.-Atmos.
Volume:109
Issue / Number:D19
Sequence Number of Article:D19304
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:CO is a well-suited indicator for the transport of pollutants in the troposphere on a regional and global scale. For the study presented here, simulations of CO concentrations from a global chemistry transport model (MOZART-2), with the CO being tagged according to the emission type and the source region, have been used to diagnose the contributions of different processes and regions to the CO burden over Europe. Model simulations have been performed with both a priori emissions and an optimized set of CO surface emissions derived from the inversion of CO retrievals of the Measurements of Pollution in the Troposphere (MOPITT) remote sensing instrument. The annual mean difference between the modeled and the observed CO at 850 hPa over Europe is -38 +/- 13 ppb with the a priori set of emissions and -7 +/- 7 ppb when the optimized emissions are employed in the model. The general difficulties arising from an intercomparison of remote sensing data with model simulations are discussed. Besides data from MOPITT, ground-based CO measurements have been employed in the evaluation of the model and its emissions. The comparisons show that the model represents the background conditions as well as large-scale transport relatively well. The budget analysis reveals the predominant impact of the European emissions on CO concentrations near the surface, and a strong impact of sources from Asia and North America on the CO burden in the free troposphere over Europe. On average, the largest contribution (67%) to the anthropogenic (fossil and biofuel sources, biomass burning) CO at the surface originates from regional anthropogenic sources, but further significant impact is evident from North America (14%) and Asia (15%). With increasing altitude, anthropogenic CO from Asia and North America gains in importance, reaching maximum contributions of 32% for North American CO at 500 hPa and 50% for Asian CO at 200 hPa. The impact of European emissions weakens with increasing altitude (8% at 500 hPa)
Free Keywords:carbon monoxide; emissions; chemistry transport model; MOPITT; intercontinental transport; CHEMICAL-TRANSPORT MODEL; CARBON-MONOXIDE; POLLUTION TRANSPORT; TROPOSPHERIC OZONE; MOPITT INSTRUMENT; MIXING RATIOS; EMISSIONS; PACIFIC; CHEMISTRY; PATHWAYS
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Communicated by:Carola Kauhs
Affiliations:MPI für Meteorologie/The Atmosphere in the Earth System/Director Research Group
External Affiliations:Natl Ctr Atmospher Res, Div Atmospher Chem, Boulder, CO 80307 USA.; Graz Univ, Inst Geophys Astrophys & Meteorol, Graz, Austria.; Natl Ctr Atmospher Res, Adv Study Program, Boulder, CO 80307 USA.; Univ Paris 06, Serv Aeron, F-75252 Paris, France.; Observ Midi Pyrenees, Lab Aerol, F-31400 Toulouse, France.; NOAA, Aeron Lab, CIRES, Boulder, CO 80303 USA.; NOAA, Climate Monitoring & Diagnost Lab, Boulder, CO 80305 USA.
Identifiers:ISI:000224429700007
ISSN:0148-0227
DOI:10.1029/2004JD004691
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