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| Titel |
Comparison of OMI NO2 tropospheric columns with an ensemble of global and European regional air quality models |
| VerfasserIn |
V. Huijnen, H. J. Eskes |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250023665
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| Zusammenfassung |
| The European GEMS project aims at developing a pre-operational system for forecasting the
chemical composition of the atmosphere, both on a global scale and on a regional scale. One
specific aim of GEMS is to develop a regional air quality forecasting system for Europe
(the GEMS-RAQ subproject). Here NO2 is one of the key chemical variables. Up
to 10 Chemical Transport Models (CTMs) are running independently to deliver
forecasts of trace gases up to three days ahead, on a daily basis. Some of the regional
models obtain their boundary conditions from a global model: MOZART 3. In
this study the tropospheric NO2 columns derived from these regional models are
validated against OMI satellite data from june 2008 onwards. The OMI data is also
compared with MOZART 3 and a reanalysis with the TM5 model for the same
period.
The first comparisons indicate that on average all models are performing very well. Some
of the regional models have difficulties to capture the high concentrations above the western
European region. This also counts for the global CTM’s. The quality of prediction after a
three forecast days decreases only moderately. For some of the models the results indicate too
low concentrations eastwards from the emission regions. Further results will be presented in
our contribution. |
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