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| Titel |
Retrieval of aerosol backscatter and extinction from airborne coherent Doppler wind lidar measurements |
| VerfasserIn |
F. Chouza, O. Reitebuch, S. Groß, S. Rahm, V. Freudenthaler, C. Toledano, B. Weinzierl |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 8, no. 7 ; Nr. 8, no. 7 (2015-07-21), S.2909-2926 |
| Datensatznummer |
250116488
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| Publikation (Nr.) |
 copernicus.org/amt-8-2909-2015.pdf |
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| Zusammenfassung |
A novel method for calibration and quantitative aerosol optical property
retrieval from Doppler wind lidars (DWLs) is presented in this work. Due to
the strong wavelength dependence of the atmospheric molecular backscatter
and the low sensitivity of the coherent DWLs to spectrally broad signals,
calibration methods for aerosol lidars cannot be applied to coherent DWLs
usually operating at wavelengths between 1.5 and 2 μm. Instead,
concurrent measurements of an airborne DWL at 2 μm and the POLIS
ground-based aerosol lidar at 532 nm are used in this work, in combination
with sun photometer measurements, for the calibration and retrieval of
aerosol backscatter and extinction profiles at 532 nm.
The proposed method was applied to measurements from the SALTRACE experiment
in June–July 2013, which aimed at quantifying the aerosol transport and
change in aerosol properties from the Sahara desert to the Caribbean. The
retrieved backscatter and extinction coefficient profiles from the airborne
DWL are within 20 % of POLIS aerosol lidar and CALIPSO satellite
measurements. Thus the proposed method extends the capabilities of coherent
DWLs to measure profiles of the horizontal and vertical wind towards aerosol
backscatter and extinction profiles, which is of high benefit for aerosol
transport studies. |
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