Inverse modelling of atmospheric trace constituents with Lagrangian models on the European scale.
Abstract
Air quality measurement networks such as the Europe-wide EMEP network have been installed, among other reasons, for tracking the success of emission reductions. In the past, this was possible only in a limited way because atmospheric transport and disper-sion couples emission and observed ambient concentrations and deposition. The project 'Inverse modelling of atmospheric trace constituents with lagrangian models on the European scale' is about the development and application of methods which allow to derive information on the sources of respective constituents from the wealth of existing air quality measurements, using dispersion models. For this purpose, source-receptor-relationships (how much contributes each source region to the impact at a measurement site during a measurement interval?) will be derived using numerical dispersion models. The emission strength in each source region will then be optimized in a way that the computed concentrations fit best the observed ones. In the present project, which is restricted to linear relationships as a first step, this is accomplished through the solution of a linear system of equations. In order to guarantee a reasonable solution of this gener-ally ill-conditioned problem, additional conditions have to be built in (regularisation). The methodology shall be applied to the recent European Tracer Experiment (ETEX) and to the iodine and caesium emissions of Chernobyl as well as the sulfur dioxide emission in Europe. All results will be compared with conventional emission inventories whose generation still suffers from a variety of methodological and practical problems and which are thus subject to considerable uncertainties. Another application are heavy metals for which even less is known about their emissions.
dispersion modelling inverse modelling atmospheric chemistry Chernobyl
Publikationen
Inverse modelling of sulfur emissions in Europe based on trajectories.
Autoren: Seibert, P. Jahr: 1999
Chapter in collected volumes
Inverse modelling with a Lagrangian particle dispersion model: application to pointreleases over limited time intervals.
Autoren: Seibert, P. Jahr: 2000
Conference & Workshop proceedings, paper, abstract
Inverse modelling of the ETEX-1 release with a Lagrangian particle model.
Autoren: Seibert, P., Stohl, A. Jahr: 2000
Conference & Workshop proceedings, paper, abstract
Inverse Modelling of Atmospheric Trace Substances on the Regional Scale with Lagrangian Models.
Autoren: Seibert, P. Jahr: 2000
Monographs
Source Reconstructions for the ETEX-1 Tracer Release with a Lagrangian Dispersion Model.
Autoren: Seibert, P. Jahr: 2001
Conference & Workshop proceedings, paper, abstract
Uncertainties in atmospheric dispersion modelling and source determination.
Autoren: Seibert, P. Jahr: 2001
Conference & Workshop proceedings, paper, abstract
Inverse modelling with a Lagrangian particle dispersion model: application to point releases over limited time intervals.
Autoren: Seibert, P. Jahr: 2001
Chapter in collected volumes
A replacement for simple backtrajectory calculations in theinterpretation of atmospheric tracesubstance measurements
Autoren: Stohl Andreas, Sabine Eckhardt, Caroline Forster, Paul James, Nicole Spichtinger and Petra Seibert Jahr: 2002
Journal articles
Inverse modelling of atmospheric trace substances on the regional scale with Lagrangian models
Autoren: Seibert, P., Frank, A., Kromp-Kolb, H. Jahr: 2002
Conference & Workshop proceedings, paper, abstract
Project staff
Helga Kromp-Kolb
Em.O.Univ.Prof. Dr.h.c. Helga Kromp-Kolb
helga.kromp-kolb@boku.ac.at
Project Leader
01.10.1998 - 31.12.2002
Petra Seibert
Assoc. Prof. Dr. Petra Seibert
petra.seibert@boku.ac.at
Tel: +43 1 47654-81417
Project Staff
01.10.1998 - 31.12.2002
BOKU partners
External partners
Ludwig Maximilian University Munich, Lehrstuhl für Bioklimatologie und Immissionsforschung
Dr. Andreas Stohl
partner
University of Wienna, Institute of Mathematics
Prof. Arnold Neumaier
partner