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| Titel |
Lagrangian transport and inverse emission modeling of non-CO2 greenhouse gases in Europe |
| VerfasserIn |
Dominik Brunner, Stephan Henne, Stefan Reimann, Rebecca Hiller, Alistair Manning, Rona Thompson, Andreas Stohl |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250099153
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| Publikation (Nr.) |
 EGU/EGU2014-14905.pdf |
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| Zusammenfassung |
| Lagrangian models, which track the movement of fluid parcels in their moving frame of
reference, have gained in popularity and sophistication over the past few decades. More
recently, Lagrangian models, in particular the class of Lagrangian Particle Dispersion
Models (LPDMs), have demonstrated their great potential in the context of inverse
emission estimation as the Lagrangian framework provides a simple means to establish
the relationship between receptor (measurement) locations and upstream sources.
We will first briefly summarize the basic concepts of LPDMs, their application
in forward and backward mode, and their use in inverse modeling. We will then
present several examples of inverse emission estimation of non-CO2 greenhouse
gases and ozone depleting substances. The main transport modeling tool is the
Lagrangian Particle Dispersion Model FLEXPART which was driven either with
meteorological fields of the global IFS model of ECWMF or, in an adapted and
augmented version, with high-resolution fields of the mesoscale weather forecast
model COSMO. Using ECMWF meteorology, FLEXPART was applied to quantify
European halocarbon emissions based on measurements at Jungfraujoch, Mace Head
and a few other sites in Europe. While for some compounds our estimates were
in good agreement with officially reported numbers, we also identified important
examples of large discrepancies. FLEXPART was also applied at smaller scales
to study anthropogenic and semi-natural methane emissions in Switzerland. For
this purpose, it was driven by high-resolution fields of the COSMO model and
combined with observations from a small aircraft and from a new measurement network
recently established in Switzerland. We will compare our independently estimated
methane emissions with the numbers presented in the Swiss National Inventory
Report. |
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