Ice cloud depolarization for nadir and off-nadir CALIPSO measurements

Ice cloud depolarization for nadir and off-nadir CALIPSO measurements

Currently approaching its sixth year in space, the CALIPSO satellite collects lidar linear depolarization ratios δ from 0.532 μm laser backscatter, an indicator of particle phase, shape, and orientation. We examine one‐yearδaverages for day and night periods when the lidar was pointing close to the...

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Veröffentlicht in:Geophysical research letters 2012-10, Vol.39 (20), p.n/a
Hauptverfasser: Sassen, Kenneth, Kayetha, Vinay Kumar, Zhu, Jiang
Format: Artikel
Sprache:eng
Schlagworte:
Atmospheric sciences
Backscattering
CALIPSO
Chemistry
Clouds
Crystal structure
Crystals
Depolarization
Earth sciences
Earth, ocean, space
Exact sciences and technology
Ice
Ice clouds
Latitude
Lidar
Night
Physics
Radiation
Radiative transfer
Troposphere
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Beschreibung
Zusammenfassung:Currently approaching its sixth year in space, the CALIPSO satellite collects lidar linear depolarization ratios δ from 0.532 μm laser backscatter, an indicator of particle phase, shape, and orientation. We examine one‐yearδaverages for day and night periods when the lidar was pointing close to the nadir (0.3°) and off‐nadir (3.0°), in terms of geographic location and zonal height averages. For the first time, also given is the dependency ofδon temperature versus latitude for ice clouds. The analysis involves all ice clouds with a cloud top temperature of 
ISSN:0094-8276
1944-8007
DOI:10.1029/2012GL053116