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| Titel |
Evaluation of the Lidar/Radiometer Inversion Code (LIRIC) to determine microphysical properties of volcanic and desert dust |
| VerfasserIn |
J. Wagner, A. Ansmann, U. Wandinger, P. Seifert, A. Schwarz, M. Tesche, A. Chaikovsky, O. Dubovik |
| 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 ; 6, no. 7 ; Nr. 6, no. 7 (2013-07-22), S.1707-1724 |
| Datensatznummer |
250017922
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| Publikation (Nr.) |
 copernicus.org/amt-6-1707-2013.pdf |
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| Zusammenfassung |
| The Lidar/Radiometer Inversion Code (LIRIC) combines the multiwavelength
lidar technique with sun/sky photometry and allows us to retrieve vertical
profiles of particle optical and microphysical properties separately for
fine-mode and coarse-mode particles. After a brief presentation of the
theoretical background, we evaluate the potential of LIRIC to retrieve the
optical and microphysical properties of irregularly shaped dust particles.
The method is applied to two very different aerosol scenarios: a strong
Saharan dust outbreak towards central Europe and an Eyjafjallajökull
volcanic dust event. LIRIC profiles of particle mass concentrations for the
coarse-mode as well as for the non-spherical particle fraction are compared
with results for the non-spherical particle fraction as obtained with the
polarization-lidar-based POLIPHON method. Similar comparisons for fine-mode
and spherical particle fractions are presented also. Acceptable agreement
between the different dust mass concentration profiles is obtained. LIRIC
profiles of optical properties such as particle backscatter coefficient,
lidar ratio, Ångström exponent, and particle depolarization ratio are
compared with direct Raman lidar observations. Systematic deviations between
the LIRIC retrieval products and the Raman lidar measurements of the desert
dust lidar ratio, depolarization ratio, and spectral dependencies of particle
backscatter and lidar ratio point to the applied spheroidal-particle model as
main source for these uncertainties in the LIRIC results. |
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