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Titel |
Comparison of Tropospheric NO2 Columns from the LOTOS-EUROS Regional Air Quality Model and Ground Based MAX-DOAS Observations |
VerfasserIn |
Tim Vlemmix, Henk Eskes, Ankie Piters, Pieternel Levelt |
Konferenz |
EGU General Assembly 2011
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Medientyp |
Artikel
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Sprache |
Englisch
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Digitales Dokument |
PDF |
Erschienen |
In: GRA - Volume 13 (2011) |
Datensatznummer |
250050831
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Zusammenfassung |
It has been demonstrated that the MAX-DOAS measurement technique can be used to
retrieve tropospheric NO2 columns from ground based observations of scattered
sunlight with an uncertainty below 20% (cloud free conditions). We have used a
twelve-month data set (mostly 2008) of MAX-DOAS observations done in De Bilt, the
Netherlands, to compare tropospheric NO2 columns - seasonal variation, diurnal
cycle, weekly cycle - with the regional air quality model LOTOS-EUROS that was
run on a high-resolution grid (7x7 km2). A comparison with both a free model
run, and a run including assimilated surface observations of NOx and ozone, was
performed to study the effect of data-assimilation. For cloudy conditions, only the
sub-cloud tropospheric NO2 columns were compared, using lidar cloud height
observations in combination with the NO2 profile from the LOTOS-EUROS model. |
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