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



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ID: 174036.0, MPI für Meteorologie / Atmosphere in the Earth System
Stratosphere-to-troposphere transport: A model and method evaluation
Authors:Cristofanelli, P.; Bonasoni, P.; Collins, W.; Feichter, Johann; Forster, C.; James, P.; Kentarchos, A.; Kubik, P. W.; Land, C.; Meloen, J.; Roelofs, G. J.; Siegmund, P.; Sprenger, M.; Schnabel, C.; Stohl, A.; Tobler, L.; Tositti, L.; Trickl, T.; Zanis, P.
Language:English
Date of Publication (YYYY-MM-DD):2003-03-13
Title of Journal:Journal of Geophysical Research-Atmospheres
Journal Abbrev.:J. Geophys. Res.-Atmos.
Volume:108
Issue / Number:D12
Sequence Number of Article:8525
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:During the EU-project Influence of Stratosphere-Troposphere exchange in a Changing Climate on Atmospheric Transport and Oxidation Capacity (STACCATO), a combined approach of a measurement network and numerical simulations was used to estimate the strength and frequency of stratosphere-to-troposphere transport (STT) events and their influence on tropospheric chemistry. Measurements of surface ozone, beryllium-7, and beryllium-10 concentrations and meteorological parameters at four European high mountain stations, as well as atmospheric profiles obtained by ozone soundings and a high-resolution lidar, were carried out. In order to simulate STT events, seven different models have been applied by the STACCATO partners. These are two trajectory models (LAGRANTO and FLEXTRA), a Lagrangian transport model (FLEXPART), a Lagrangian chemistry-transport model (STOCHEM), a Eulerian transport model (TM3), and two general circulation models (ECHAM4 and MA-ECHAM4). In order to investigate the strengths and weaknesses of each of these models and to identify the reasons for their discrepancies, a detailed comparison with measured data is presented in this paper. These models provided fluxes and concentrations of a stratospheric tracer, as well as the vertical profiles of ozone and radionuclides for a stratospheric intrusion case study that occurred over Europe in the year 1996. The comparison of the model results with the measurement data and the satellite observations revealed that all the models captured the general behavior of the event. However, great differences were found in the intensity and spatial development of the simulated intrusion event.
Comment of the Author/Creator:Date: 2003, MAR 13
External Publication Status:published
Document Type:Article
Communicated by:Carola Kauhs
Affiliations:MPI für Meteorologie/The Atmosphere in the Earth System
External Affiliations:CNR, ISAC, Bologna, Italy.; Met Off, Bracknell, Berks, England.; Max Planck Inst Meteorol, Hamburg, Germany.; Tech Univ Munich, Dept Ecol, D-8050 Freising Weihenstephan, Germany.; Univ Utrecht, Inst Marine & Atmospher Res, Utrecht, Netherlands.; Paul Scherrer Inst, CH-8048 Zurich, Switzerland.; Royal Netherlands Meteorol Inst, Div Atmospher Composit, NL-3730 AE De Bilt, Netherlands.; Swiss Fed Inst Technol, Inst Atmospher & Climate Sci, Zurich, Switzerland.; Univ Bern, Dept Chem & Biochem, Bern, Switzerland.; ETH Honggerberg, Inst Particle Phys, CH-8093 Zurich, Switzerland.; Paul Scherrer Inst, Villigen, Switzerland.; Univ Bologna, Environm Radiochem Lab, Bologna, Italy.; Forschungszentrum Karlsruhe, Bereich Atmosphaer Umweltforsch, Inst Meteorol & Klimaforsch, Garmisch Partenkirchen, Germany.; Aristotle Univ Thessaloniki, Lab Atmospher Phys, Thessaloniki, Greece.
Identifiers:ISI:000182196300002
ISSN:0148-0227
DOI:10.1029/2002JD002600
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