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Proceedings Paper

Ground truthing modeled-kPAR and on deck primary productivity incubations with in-situ observations
Author(s): Richard T. Barber; Lisa Borden; Zachary Johnson; John Marra; Carol Knudson; Charles C. Trees
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Paper Abstract

The Arabian Sea Process Study carried out on six cruises in 1995 provided observations that make possible the ground truthing of model estimates of kPAR and on deck productivity incubations with direct kPAR observations and in situ productivity incubations. THe Morel 1988 optical model did a good job of reproducing the observed values. Comparison of on deck and in situ depth profiles suggested that on deck incubators received more irradiance across the entire light gradient. This subsidy in E0 apparently came from efficient absorption of reflected light and low angle sunlight by small incubators. When depths were recalculated taking into account the irradiance subsidy, profiles of productivity as a function of depth determined by on deck incubations were essentially identical to in situ profiles.

Paper Details

Date Published: 6 February 1997
PDF: 6 pages
Proc. SPIE 2963, Ocean Optics XIII, (6 February 1997); doi: 10.1117/12.266409
Show Author Affiliations
Richard T. Barber, Duke University (United States)
Lisa Borden, Duke University (United States)
Zachary Johnson, Duke University (United States)
John Marra, Columbia University (United States)
Carol Knudson, Columbia University (United States)
Charles C. Trees, San Diego State University (United States)

Published in SPIE Proceedings Vol. 2963:
Ocean Optics XIII
Steven G. Ackleson; Robert J. Frouin, Editor(s)

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