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Improvements in Raman Lidar Measurements Using New Interference Filter TechnologyNarrow-band interference filters with improved transmission in the ultra-violet have been developed under NASA-funded research and used in the Raman Airborne Spectroscopic Lidar (RASL) in ground-based, upward-looking tests. Measurements were made of atmospheric water vapor, cirrus cloud optical properties and carbon dioxide that improve upon any previously demonstrated using Raman lidar. Daytime boundary and mixed layer profiling of water vapor mixing ratio up to an altitude of approximately 4 h is performed with less than 5% random error using temporal and spatial resolution of 2-minutes and 60 - 210, respectively. Daytime cirrus cloud optical depth and extinction-to-backscatter ratio measurements are made using 1 -minute average. Sufficient signal strength is demonstrated to permit the simultaneous profiling of carbon dioxide and water vapor mixing ratio into the free troposphere during the nighttime. A description of the filter technology developments is provided followed by examples of the improved Raman lidar measurements.
Document ID
20060026169
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Whiteman, David N. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Potter, John R. (Barr Associates, Inc. Westford, MA, United States)
Tola, Rebecca (Barr Associates, Inc. Westford, MA, United States)
Veselovskii, Igor (Maryland Univ. Baltimore County Catonsville, MD, United States)
Cadirola, Martin (Ecotronics, LLC Clarksburg, Md, United States)
Rush, Kurt (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Comer, Joseph (Science Systems and Applications, Inc. Lanham, MD, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2006
Subject Category
Geophysics
Distribution Limits
Public
Copyright
Public Use Permitted.

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