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| Titel |
Aerosol classification using airborne High Spectral Resolution Lidar measurements – methodology and examples |
| VerfasserIn |
S. P. Burton, R. A. Ferrare, C. A. Hostetler, J. W. Hair, R. R. Rogers, M. D. Obland, C. F. Butler, A. L. Cook, D. B. Harper, K. D. Froyd |
| 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 ; 5, no. 1 ; Nr. 5, no. 1 (2012-01-10), S.73-98 |
| Datensatznummer |
250002309
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| Publikation (Nr.) |
 copernicus.org/amt-5-73-2012.pdf |
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| Zusammenfassung |
| The NASA Langley Research Center (LaRC) airborne High Spectral Resolution
Lidar (HSRL) on the NASA B200 aircraft has acquired extensive datasets of
aerosol extinction (532 nm), aerosol optical depth (AOD) (532 nm),
backscatter (532 and 1064 nm), and depolarization (532 and 1064 nm) profiles
during 18 field missions that have been conducted over North America since
2006. The lidar measurements of aerosol intensive parameters (lidar ratio,
depolarization, backscatter color ratio, and spectral depolarization ratio)
are shown to vary with location and aerosol type. A methodology based on
observations of known aerosol types is used to qualitatively classify the
extensive set of HSRL aerosol measurements into eight separate types.
Several examples are presented showing how the aerosol intensive parameters
vary with aerosol type and how these aerosols are classified according to
this new methodology. The HSRL-based classification reveals vertical
variability of aerosol types during the NASA ARCTAS field experiment
conducted over Alaska and northwest Canada during 2008. In two examples
derived from flights conducted during ARCTAS, the HSRL classification of
biomass burning smoke is shown to be consistent with aerosol types derived
from coincident airborne in situ measurements of particle size and
composition. The HSRL retrievals of AOD and inferences of aerosol types are
used to apportion AOD to aerosol type; results of this analysis are shown
for several experiments. |
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