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  Lidar Network Observations of Cirrus Morphological and Scattering Properties during the International Cirrus Experiment 1989: The 18 October 1989 Case-Study and Statistical-Analysis

Ansmann, A., Bösenberg, J., Elouragini, S., Flamant, P. H., Klappheck, K. H., Linné, H., et al. (1993). Lidar Network Observations of Cirrus Morphological and Scattering Properties during the International Cirrus Experiment 1989: The 18 October 1989 Case-Study and Statistical-Analysis. Journal of Applied Meteorology, 32, 1608-1622. doi:10.1175/1520-0450(1993)032<1608:LNOOCM>2.0.CO;2.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0000-DD27-C Version Permalink: https://hdl.handle.net/21.11116/0000-0005-A31C-4
Genre: Journal Article

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JournalAppliedMeteorolgy-1993-Ansmann.pdf (Publisher version), 2MB
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 Creators:
Ansmann, Albert1, Author
Bösenberg, Jens2, Author
Elouragini, Salem3, Author
Flamant, Pierre H.1, Author
Klappheck, Karl Heinz4, Author
Linné, Holger2, Author
Menenger, Louis3, Author
Michealis, Walfried1, Author
Riebesell, Maren1, Author
Senff, Christoph2, Author
Thro, Pierre-Yves2, Author
Wandinger, Ulla1, Author
Weitkamp, Claus1, Author
Loth, Claude3, Author
Moerl, Peter5, Author
Renger, Wolfgang5, Author
Pelon, Jacques6, Author
Affiliations:
1GKSS Forschungszentrum Geesthacht, Max-Planck-Straße, 2054 Geesthacht, DE, ou_persistent22              
2MPI for Meteorology, Max Planck Society, Bundesstraße 53, 20146 Hamburg, DE, ou_913545              
3LMD Ecole polytechnique, Laboratoire de Météorolgie dynamique, Ecole polytechnique, 91128 Palaiseau, FR, ou_persistent22              
4Deutscher Wetterdienst, Meteorologisches Observatorium Hamburg, Frahmredder 95, 2000 Hamburg 65, DE, ou_persistent22              
5Deutsche Forschungs- und Versuchsanstalt für Luft und Raumfahrt, 8031 Wessling, DE, ou_persistent22              
6Service d'aéronomie, BP3, 91370 Verriere-le-Buisson, FR, ou_persistent22              

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 Abstract: Four lidars, located roughly 75 km from each other in the inner German Bight of the North Sea, were used to measure geometrical and optical properties of cirrus clouds during the International Cirrus Experiment 1989 (ICE '89). A complete cirrus life cycle was observed simultaneously with three lidars during a case study on 18 October 1989. Time series of particle backscatter, depolarization-ratio height profiles, cloud depth, optical thickness, and of the cirrus extinction-to-backscatter, or lidar, ratio describe the evolution of the cloud system. A two-wavelength lidar measurement was performed and indicates wavelength independence of ice-crystal scattering. The optical and geometrical depths of the cirrus were well correlated and varied between 0.01 and 0.5 and 100 m and 4.5 km, respectively. Although the evolution of the cloud deck was similar over the different observation sites, cirrus geometrical, scattering, and microphysical properties were found to vary considerably within the lidar network. A statistical analysis of ice-cloud properties is performed based on 38 different cirrus cases sampled during ICE '89. Cirrus formation was found to start at the tropopause in most cases. Ice clouds, measured at high midlatitudes (around 54-degrees-N), were thin with mean optical and geometrical depths mainly below 0.4 and 2 km, respectively. A good correlation between mean cloud optical and geometrical thickness, and a weak decrease of the mean optical depths with temperature was observed.

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Language(s): eng - English
 Dates: 1993
 Publication Status: Issued
 Pages: -
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 Rev. Type: Peer
 Identifiers: DOI: 10.1175/1520-0450(1993)032<1608:LNOOCM>2.0.CO;2
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Title: Journal of Applied Meteorology
Source Genre: Journal
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Publ. Info: Boston, MA : American Meteorology Society
Pages: - Volume / Issue: 32 Sequence Number: - Start / End Page: 1608 - 1622 Identifier: ISSN: 0894-8763
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000210720

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Title: Report / Max-Planck-Institut für Meteorologie
  Other : MPI Report
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Publ. Info: Hamburg : Max-Planck-Institut für Meteorologie
Pages: - Volume / Issue: 060 Sequence Number: - Start / End Page: - Identifier: Other: 0937-1060
CoNE: https://pure.mpg.de/cone/journals/resource/0937-1060