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| Titel |
A comparison of light backscattering and particle size distribution measurements in tropical cirrus clouds |
| VerfasserIn |
F. Cairo, G. Donfrancesco, M. Snels, F. Fierli, M. Viterbini, S. Borrmann, W. Frey |
| 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. 3 ; Nr. 4, no. 3 (2011-03-17), S.557-570 |
| Datensatznummer |
250001803
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| Publikation (Nr.) |
 copernicus.org/amt-4-557-2011.pdf |
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| Zusammenfassung |
| An FSSP-100 Optical Particle Counter designed to count and size particles in
the micron range and a backscattersonde that measures in-situ particle
optical properties such as backscatter and depolarization ratio, are part of
the payload of the high altitude research aircraft M55 Geophysica. This
aircraft was deployed in tropical field campaigns in Bauru, Brasil
(TROCCINOX, 2004) Darwin, Australia (SCOUT-Darwin, 2005) and Ouagadougou,
Burkina Faso (SCOUT-AMMA, 2006). In those occasions, measurements of particle
size distributions and optical properties within cirrus cloud were performed.
Scope of the present work is to assess and discuss the consistency between
the particle volume backscatter coefficient observed by the backscattersonde
and the same parameter retrieved by optical scattering theory applied to
particle size distributions as measured by the FSSP-100. In addition,
empirical relationships linking the optical properties measured in-situ by
the backscattersonde, which generally can be obtained by remote sensing
techniques (LIDAR), and microphysical bulk properties like total particle
number, surface and volume density will be presented and discussed. |
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