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Estimation of mixing in the troposphere from Lagrangian trace gas reconstructions during long-range pollution plume transport Estimation of mixing in the troposphere from Lagrangian trace gas reconstructions during long-range pollution plume transport

Pisso, I. und Real, E. und Law, K. S. und Legras, B. und Bousserez, N. und Attié, J. L. und Schlager, H. (2009) Estimation of mixing in the troposphere from Lagrangian trace gas reconstructions during long-range pollution plume transport Estimation of mixing in the troposphere from Lagrangian trace gas reconstructions during long-range pollution plume transport. Journal of Geophysical Research, 114 (D19301), Seiten 1-11. DOI: 10.1029/2008JD011289.

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Offizielle URL: http://www.agu.org/pubs/crossref/2009/2008JD011289.shtml

Kurzfassung

The dispersion and mixing of pollutant plumes during long-range transport across the North Atlantic is studied using ensembles of diffusive backward trajectories in order to estimate turbulent diffusivity coefficients in the free troposphere under stratified flow conditions. Values of the order of 0.3�1 m2 s�1 and 1 �� 104 m2 s�1 for the vertical and horizontal diffusivity coefficients Dv and Dh , respectively, are derived. Uncertainties related to the method are discussed, and results are compared with previous estimates of atmospheric mixing rates. These diffusivity estimates also yield an estimate of the vertical/horizontal aspect ratio of tracer structures in the troposphere. Results from this case study are used to estimate grid resolutions needed to accurately simulate the intercontinental transport of pollutants as being of the order of 500 m in the vertical and at least 40 km in the horizontal. This work forms the basis of high-resolution chemical simulations using ensembles of diffusive backward trajectories.

Dokumentart:Zeitschriftenbeitrag
Titel:Estimation of mixing in the troposphere from Lagrangian trace gas reconstructions during long-range pollution plume transport Estimation of mixing in the troposphere from Lagrangian trace gas reconstructions during long-range pollution plume transport
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Pisso, I.LATMOS, Paris, F
Real, E.LATMOS, Paris, F
Law, K. S.LATMOS, Paris, F
Legras, B.CNRS/ Toulouse, F
Bousserez, N.CNRS/ Toulouse, F
Attié, J. L.CNRS/ Toulouse, F
Schlager, H.DLR
Datum:2009
Erschienen in:Journal of Geophysical Research
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:114
DOI :10.1029/2008JD011289
Seitenbereich:Seiten 1-11
Status:veröffentlicht
Stichwörter:Long-range transport, Lagrangian study, dispersion
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:L VU - Luftverkehr und Umwelt (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L VU - Luftverkehr und Umwelt
DLR - Teilgebiet (Projekt, Vorhaben):L - Schadstoffarmer Luftverkehr (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Atmosphärische Spurenstoffe
Hinterlegt von: Yasemin Yilmaz
Hinterlegt am:15 Dez 2009 15:34
Letzte Änderung:23 Jan 2014 11:36

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