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| Titel |
Small Whiskbroom Imager for atmospheric compositioN monitorinG (SWING) from an Unmanned Aerial Vehicle (UAV): Results from the 2014 AROMAT campaign |
| VerfasserIn |
Alexis Merlaud, Frederik Tack, Daniel Constantin, Caroline Fayt, Jeroen Maes, Florin Mingireanu, Ionut Mocanu, Lucian Georgescu, Michel Van Roozendael |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250112347
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| Publikation (Nr.) |
 EGU/EGU2015-12499.pdf |
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| Zusammenfassung |
| The Small Whiskbroom Imager for atmospheric compositioN monitorinG (SWING) is an
instrument dedicated to atmospheric trace gas retrieval from an Unmanned Aerial Vehicle
(UAV). The payload is based on a compact visible spectrometer and a scanning mirror to
collect scattered sunlight. Its weight, size, and power consumption are respectively 920 g,
27x12x12 cm3, and 6 W. The custom-built 2.5 m flying wing UAV is electrically powered,
has a typical airspeed of 100 km/h, and can operate at a maximum altitude of 3 km. Both the
payload and the UAV were developed in the framework of a collaboration between the
Belgian Institute for Space Aeronomy (BIRA-IASB) and the Dunarea de Jos University of
Galati, Romania.
We present here SWING-UAV test flights dedicated to NO2 measurements
and performed in Romania on 10 and 11 September 2014, during the Airborne
ROmanian Measurements of Aerosols and Trace gases (AROMAT) campaign.
The UAV performed 5 flights in the vicinity of the large thermal power station
of Turceni (44.67Ë N, 23.4Ë E). The UAV was operated in visual range during
the campaign, up to 900 m AGL , downwind of the plant and crossing its exhaust
plume.
The spectra recorded on flight are analyzed with the Differential Optical Absorption
Spectroscopy (DOAS) method. The retrieved NO2 Differential Slant Column Densities
(DSCDs) are up to 1.5e17 molec/cm2 and reveal the horizontal gradients around the
plant. The DSCDs are converted to vertical columns and compared with coincident
car-based DOAS measurements. We also present the near-future perspective of
the SWING-UAV observation system, which includes flights in 2015 above the
Black Sea to quantify ship emissions, the addition of SO2 as a target species, and
autopilot flights at higher altitudes to cover a typical satellite pixel extent (10x10 km2). |
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