Toward a novel high-resolution modeling approach for the study of chemical evolution of pollutant plumes during long-range transport

Autor: Hans Schlager, Kathy S. Law, Anke Roiger, Jean-Luc Attié, N. Bousserez, Ignacio Pisso, Bernard Legras, Elsa Real
Přispěvatelé: TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Laboratoire d'aérologie (LAERO), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), DLR Institut für Physik der Atmosphäre (IPA), Deutsches Zentrum für Luft- und Raumfahrt [Oberpfaffenhofen-Wessling] (DLR), INSU et ADEME (programmes PNCA et PATOM)IPSLIGN, Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École des Ponts ParisTech (ENPC)-École polytechnique (X)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Atmospheric Science
010504 meteorology & atmospheric sciences
Meteorology
[SDE.MCG]Environmental Sciences/Global Changes
Soil Science
Aquatic Science
010502 geochemistry & geophysics
Oceanography
Atmospheric sciences
01 natural sciences
chemical transformations
Troposphere
Geochemistry and Petrology
TRACER
tropospheric pollution
Earth and Planetary Sciences (miscellaneous)
Panache
long range transport
Mixing (physics)
Air mass
0105 earth and related environmental sciences
Earth-Surface Processes
Water Science and Technology
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]
Ecology
Atmosphärische Spurenstoffe
Paleontology
Forestry
Trace gas
Plume
Geophysics
13. Climate action
Space and Planetary Science
Trajectory
Environmental science
Zdroj: Journal of Geophysical Research: Atmospheres
Journal of Geophysical Research: Atmospheres, 2010, 115 (12), pp.D12302. ⟨10.1029/2009JD011707⟩
Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2010, 115 (12), pp.D12302. ⟨10.1029/2009JD011707⟩
ISSN: 2169-897X
2169-8996
DOI: 10.1029/2009JD011707⟩
Popis: International audience; This paper presents results from a new method, ZooM-CiTTy, that aims to accurately reproduce filamentation observed in profiles of chemically active species in the free troposphere. Lagrangian tracer reconstructions of aircraft measurements across pollutant plumes including a stochastic representation of mixing are coupled with photochemical trajectory simulations, initialized with global model fields. The results provide a high-resolution simulation of trace gases along the flight track together with a detailed picture about the multiple air mass origins influencing chemical composition in the region where plume measurements were taken. This paper builds on results from Pisso et al. (2009) for the dynamic part of the model (the stochastic tracer reconstructions) and focuses on reconstruction of reactive species like O3. The model is evaluated for a case of long-range transport of a forest fire plume from Alaska to Europe. Simulated trace species are compared with measurements made in the plume by the DLR Falcon aircraft flying over Europe, and the role of photochemistry in governing the chemical composition across the plume is evaluated. It is shown that the model reproduces well O3 and NOy concentrations and O3 production per CO in the plumes as well as gradients at plume edges. In particular, because ZooM-CiTTy represents the contribution of several air masses to a measurement at a particular location, the model can reproduce so-called mixing lines between air masses. Results show that photochemistry and mixing contributions vary in different parts of the plume and that resulting trace gas correlations are a combination of these different mixtures. One limitation of the method is the fact that mixing between air masses is only performed at the end of the trajectories. Errors on simulated O3 reconstruction from this formulation are evaluated. These errors seems to be negligible in this case (in the free troposphere, far from emission region) because strong gradients are maintained by large-scale winds. Results from ZooM-CiTTy are also used to evaluate errors due to nonlinearities in O3 photochemistry in coarse-grid models. It is shown that in cases where strong gradients are maintained, errors in net O3 production can be as high as 50% at plumes edges. This new method is interesting to simulate relatively small layering structures observed in the free troposphere, but a more realistic treatment of mixing “en route” is needed if the model has to be used more extensively.
Databáze: OpenAIRE
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