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| Titel |
Water vapour profiles from Raman lidar automatically calibrated by microwave radiometer data during HOPE |
| VerfasserIn |
A. Foth, H. Baars, P. Di Girolamo, B. Pospichal |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 15, no. 14 ; Nr. 15, no. 14 (2015-07-16), S.7753-7763 |
| Datensatznummer |
250119899
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| Publikation (Nr.) |
 copernicus.org/acp-15-7753-2015.pdf |
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| Zusammenfassung |
| In this paper, we present a method to derive water vapour profiles
from Raman lidar measurements calibrated by the integrated water
vapour (IWV) from a collocated microwave radiometer during the
intense observation campaign HOPE in the frame of the HD(CP)2
initiative. The simultaneous observation of a microwave radiometer
and a Raman lidar allowed an operational and continuous measurement
of water vapour profiles also during cloudy conditions. The
calibration method provides results which are in a good agreement with
conventional methods based on radiosondes. The calibration factor
derived from the proposed IWV method is very stable with a relative
uncertainty of 5 %. This stability allows for the calibration of the lidar
even in the presence of clouds using the calibration factor
determined during the most recent clear sky interval. Based on
the application of this approach, it is possible to retrieve water
vapour profiles during all non-precipitating
conditions. A statistical analysis shows a good agreement between
the lidar measurements and collocated radiosondes. The relative
biases amount to less than 6.7 % below 2 km. |
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