Spatial structures of optical parameters in the California current, as measured with the Nimbus-7 Coastal Zone Color Scanner.

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Author
McMurtrie, John T., Jr
Date
1984-03Advisor
Mueller, James L.
Second Reader
Willmott, Andrew J.
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Show full item recordAbstract
Optical variability across the continental slope and
shelf off Central California was studied using Nimbus-7
Coastal Zone Color Scanner (CZCS) data. CZCS estimates of
It (490), the irradiance attenuation coefficient at 490 nm,
were expressed as optical depth 1/k(490). k modified atmospheric
correction algorithm was used to account for water
radiance at 670 nm. Time sequences of 1/k(490) were assembled
and partitioned into four zonal transects, at different
latitudes, spanning May through November in 1979, 1980 and
1982. Empirical Orthogonal Functions (EOFs) were calculated
for each partition. The first EOFs are dominated by scales
of order 180 km, with in all cases, a band of low optical
depth water in the first 100 km adjacent to the coast.
Scales decrease in successive EOFs, to about 40 km in the
fifth EOF. The feasibility of joining EOFs from different
partitions was demonstrated as a precursor for future
applications to piecewise analysis of oceanic satellite
data.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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