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| Titel |
The IUP-Bremen imaging DOAS Instrument IMPACT: Characterization and first application |
| VerfasserIn |
Enno Peters, Mareike Ostendorf, Anja Schönhardt, Andreas Richter, André Seyler, Folkard Wittrock, Stefan Schreier, Mihalis Vrekoussis, John P. Burrows |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250143025
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| Publikation (Nr.) |
 EGU/EGU2017-6714.pdf |
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| Zusammenfassung |
| Tropospheric nitrogen dioxide (NO2) pollution has been measured for many years using various techniques. While for example in situ observations in urban monitoring networks detect the NO2 concentration continuously at a particular location, remote sensing techniques provide a larger-spatial scale image of the NO2 distribution but mostly with a smaller temporal coverage. Moreover, the concentration is integrated along the light path.
Here, we introduce the novel ground-based IMPACT (Imaging MaPper for AtmospheriC observaTions) instrument, which is based on the passive Differential Optical Absorption Spectroscopy (DOAS) method. In contrast to traditional MAX-DOAS instruments measuring in only one direction per time, the new imaging instrument is measuring simultaneously in 50 elevation angles. In addition, the azimuth is adjustable from 0°-360° due to installation of the telescope on a Pan-tilt-head. As a result, complete hemispheric images of NO2 as well as the oxygen dimer O4 around the measurement site are obtained with a temporal resolution of ca. 15 minutes. This provides a detailed insight into the regional NO2 distribution, local sources, transport and diurnal variation.
In addition to instrumental characterization, first data and results are presented from the international CINDI-2 field campaign, which took place in Cabauw, The Netherlands, in summer 2016. |
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