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| Titel |
First measurements of aerosols on a ZEPPELIN airship |
| VerfasserIn |
Ralf Tillmann, Thomas F. Mentel, Astrid Kiendler-Scharr, Andreas Wahner |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250036017
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| Zusammenfassung |
| In summer 2007 and autumn 2008 the airship ZEPPELIN NT was equipped with a suite of
instruments to measure the distribution of different trace gases, short-lived radicals
and aerosols in the planetary boundary layer together with radiation fluxes and
meteorological parameters. A condensation particle counter (CPC, TSI Inc.) and a
scanning mobility particle sizer (SMPS, TSI Inc.) were used to measure the total
number concentration of atmospheric aerosols and their number size distribution. The
measurements were carried out over forested, rural and urban areas in southern Germany as
well as over Lake Constance. The performed flight patterns were vertical profiles
above selected areas and regional flight tracks within a defined height above the
ground.
The observed aerosol number concentrations during the two campaign periods cover a
range between 500 and 40000 cm-3, dependent on the area investigated, meteorological
parameters and flight height. Height resolved measurements of aerosol number
concentrations predominately show that the aerosol concentration decreases with height.
Since primary aerosols and precursors of secondary aerosols have their sources near the
surface, aerosol concentrations are normally expected to be lower at higher altitudes. Results
of the SMPS-measurements show bi- and tri-modal aerosol size distributions in a particle
diameter range of 13 – 750 nm. The results of the aerosol measurements will be
discussed together with meteorological parameters and trace gas measurements. |
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