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Laboratory studies of in vivo fluorescence of phytoplanktonA lidar system is developed that uses four selected excitation wavelengths to induce chlorophyll 'a' fluorescence which is indicative of both the concentration and diversity of phytoplankton. The operating principles of the system and the results of measurements of phytoplankton fluorescence in a controlled laboratory environment are presented. A comparative study of results from lidar fluorosensor laboratory tank tests using representative species of phytoplankton in single and multispecies cultures from each of four color groups reveals that (1) there is good correlation between the fluorescence of chlorophyll 'a' remotely simulated and detected by the lidar system and in-situ measurements using four similar excitation wavelengths in a flow-through fluorometer; (2) good correlation exists between the total chlorophyll 'a' calculated from lidar-fluorosensor data and measurements obtained by the Strickland-Parsons method; and (3) the lidar fluorosensor can provide an index of population diversity.
Document ID
19790031106
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Brown, C. A., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Farmer, F. H.
(NASA Langley Research Center Hampton, VA, United States)
Jarrett, O., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Staton, W. L.
(NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
Oceanography
Meeting Information
Meeting: In: Joint Conference on Sensing of Environmental Pollutants
Location: New Orleans, LA
Start Date: November 6, 1977
End Date: November 11, 1977
Accession Number
79A15119
Distribution Limits
Public
Copyright
Other

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