Atmos. Chem. Phys. Discuss., 9, 8619-8633, 2009
www.atmos-chem-phys-discuss.net/9/8619/2009/
doi:10.5194/acpd-9-8619-2009
© Author(s) 2009. This work is distributed
under the Creative Commons Attribution 3.0 License.
Review Status
This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Sensitivity of ensemble Lagrangian reconstructions to assimilated wind time step resolution
I. Pisso1,*, V. Marécal2, B. Legras1, and G. Berthet2
1Laboratoire de Météorologie Dynamique (UMR 8539), ENS – CNRS, Paris, France
2Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (UMR 6115), Université d'Orléans – CNRS, Orléans, France
*now at: Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, UK

Abstract. The aim of this study is to define the optimal temporal and spatial resolution required for accurate offline diffusive Lagrangian reconstructions of high resolution in-situ tracers measurements based on meteorological wind fields and on coarse resolution 3-D tracer distributions. Increasing the time resolution of the advecting winds from three to one hour intervals has a modest impact on diffusive reconstructions in the case studied. This result is discussed in terms of the effect on the geometry of transported clouds of points in order to set out a method to assess the effect of meteorological flow on the transport of atmospheric tracers.

Citation: Pisso, I., Marécal, V., Legras, B., and Berthet, G.: Sensitivity of ensemble Lagrangian reconstructions to assimilated wind time step resolution, Atmos. Chem. Phys. Discuss., 9, 8619-8633, doi:10.5194/acpd-9-8619-2009, 2009.
 
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