NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The remote sensing of ocean primary productivity - Use of a new data compilation to test satellite algorithmsGlobal pigment and primary productivity algorithms based on a new data compilation of over 12,000 stations occupied mostly in the Northern Hemisphere, from the late 1950s to 1988, were tested. The results showed high variability of the fraction of total pigment contributed by chlorophyll, which is required for subsequent predictions of primary productivity. Two models, which predict pigment concentration normalized to an attenuation length of euphotic depth, were checked against 2,800 vertical profiles of pigments. Phaeopigments consistently showed maxima at about one optical depth below the chlorophyll maxima. CZCS data coincident with the sea truth data were also checked. A regression of satellite-derived pigment vs ship-derived pigment had a coefficient of determination. The satellite underestimated the true pigment concentration in mesotrophic and oligotrophic waters and overestimated the pigment concentration in eutrophic waters. The error in the satellite estimate showed no trends with time between 1978 and 1986.
Document ID
19920042347
Document Type
Reprint (Version printed in journal)
Authors
Balch, William (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Evans, Robert (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Brown, Jim (Miami, University FL, United States)
Feldman, Gene (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mcclain, Charles (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Esaias, Wayne (NASA Goddard Space Flight Center Greenbelt, MD; Miami, University, FL, United States)
Date Acquired
August 15, 2013
Publication Date
February 15, 1992
Publication Information
Publication: Journal of Geophysical Research
Volume: 97
ISSN: 0148-0227
Subject Category
OCEANOGRAPHY
Funding Number(s)
CONTRACT_GRANT: NAGW-2426
CONTRACT_GRANT: NAGW-273
CONTRACT_GRANT: NAGW-1777
Distribution Limits
Public
Copyright
Other