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| Titel |
Inter-comparison of lidar and ceilometer retrievals for aerosol and Planetary Boundary Layer profiling over Athens, Greece |
| VerfasserIn |
G. Tsaknakis, A. Papayannis, P. Kokkalis, V. Amiridis, H. D. Kambezidis, R. E. Mamouri, G. Georgoussis, G. Avdikos |
| 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 ; 4, no. 6 ; Nr. 4, no. 6 (2011-06-29), S.1261-1273 |
| Datensatznummer |
250002021
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| Publikation (Nr.) |
 copernicus.org/amt-4-1261-2011.pdf |
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| Zusammenfassung |
| This study presents an inter-comparison of two active remote sensors (lidar
and ceilometer) to determine the mixing layer height and structure of the
Planetary Boundary Layer (PBL) and to retrieve tropospheric aerosol vertical
profiles over Athens, Greece. This inter-comparison was performed under
various strongly different aerosol loads/types (urban air pollution, biomass
burning and Saharan dust event), implementing two different lidar systems
(one portable Raymetrics S.A. lidar system running at 355 nm and one
multi-wavelength Raman lidar system running at 355 nm, 532 nm and 1064 nm)
and one CL31 Vaisala S.A. ceilometer (running at 910 nm). Spectral
conversions of the ceilometer's data were performed using the
Ångström exponent estimated by ultraviolet multi-filter radiometer
(UV-MFR) measurements. The inter-comparison was based on two parameters: the
mixing layer height determined by the presence of the suspended aerosols and
the attenuated backscatter coefficient. Additionally, radiosonde data were
used to derive the PBL height. In general, a good agreement was found
between the ceilometer and the lidar techniques in both inter-compared
parameters in the height range from 500 m to 5000 m, while the limitations
of each instrument are also examined. |
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