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Near-IR extinction and backscatter coefficient measurements in low- and mid-altitude cloudsKnowledge of the attenuation and backscattering properties of clouds is required to high resolution for several types of optical sensing systems. Such data was obtained in about 15 hours of flights through clouds in the vicinity of Washington, D.C. The flights were mainly through stratocumulus, altocumulus, stratus, and stratus fractus clouds and covered an altitude and temperature range of 300 to 3200 m and -13 to 17 C. Two instruments were flown, each of which measured the backscatter from close range in two range bins to independently determine both the extinction and backscatter coefficients. The extinction and backscatter coefficients can be obtained from the signals in the two channels of each instrument, provided that the aerosol is uniform over the measurement region. When this assumptions holds, the extinction coefficient is derived basically from the ratio of the signal in the two channels; the backscatter coefficient can then be obtained from the signal in either channel.
Document ID
19870000918
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sztankay, Z. G.
(Harry Diamond Labs. Adelphi, MD, United States)
Date Acquired
August 13, 2013
Publication Date
August 1, 1986
Publication Information
Publication: NASA. Langley Research Center 13th International Laser Radar Conference
Subject Category
Communications And Radar
Accession Number
87N10351
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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