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Four wavelength lidar applied to determination of chlorophyll a concentration and algae color groupA technique for remote measurement of chlorophyll a density and determination of algae color group is described. In vivo fluorescence measurements of chlorophyll a for four color groups of algae (green, golden-brown, red, and blue-green) are described, and representative spectra are shown. The lidar equation is developed for the general case of a mixture of color groups showing the need for multicolor excitation. The lidar instrument which has been designed and fabricated at Langley Research Center for helicopter flights over surrounding portions of the Chesapeake Bay is described. The lidar package contains a unique four-color dye laser which permits multicolor excitation of chlorophyll a fluorescence from the various color groups of algae.
Document ID
19740044145
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Jarrett, O., Jr.
Mumola, P. B.
Brown, C. A., Jr.
(NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Subject Category
Geophysics
Meeting Information
Meeting: Symposium on Remote sensing and water resources management
Location: Ontario
Country: Canada
Start Date: June 11, 1973
End Date: June 14, 1973
Accession Number
74A26895
Distribution Limits
Public
Copyright
Other

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