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| Titel |
AOTF-based NO2 camera, results from the AROMAT-2 campaign |
| VerfasserIn |
Emmanuel Dekemper, Didier Fussen, Jurgen Vanhamel, Bert Van Opstal, Jeroen Maes, Alexis Merlaud, Kerstin Stebel, Dirk Schuettemeyer |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250136541
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| Publikation (Nr.) |
 EGU/EGU2016-17608.pdf |
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| Zusammenfassung |
| A hyperspectral imager based on an acousto-optical tunable filter (AOTF) has been developed in the frame of the ALTIUS mission (atmospheric limb tracker for the investigation of the upcoming stratosphere). ALTIUS is a three-channel (UV, VIS, NIR) space-borne limb sounder aiming at the retrieval of concentration profiles of important trace species (O3, NO2, aerosols and more) with a good vertical resolution. An optical breadboard was built from the VIS channel concept and is now serving as a ground-based remote sensing instrument. Its good spectral resolution (0.6nm) coupled to its natural imaging capabilities (6° square field of view sampled by a 512x512 pixels sensor) make it suitable for the measurement of 2D fields of NO2, similarly to what is nowadays achieved with SO2 cameras.
Our NO2 camera was one of the instruments that took part to the second Airborne ROmanian Measurements of Aerosols and Trace gases (AROMAT-2) campaign in August 2015. It was pointed to the smokestacks of the coal and oil burning power plant of Turceni (Romania) in order to image the exhausted field of NO2 and derive slant columns and instantaneous emission fluxes. The ultimate goal of the AROMAT campaigns is to prepare the validation of TROPOMI onboard Sentinel-5P.
We will briefly describe the instrumental concept of the NO2 camera, its heritage from the ALTIUS mission, and its advantages compared to previous attempts of reaching the same goal. Key results obtained with the camera during the AROMAT-2 campaign will be presented and further improvements will be discussed. |
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