The use of DMSP and SMS-2 digital satellite data for identifying marine fog in the eastern North Pacific Ocean area.

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Author
Ihli, Carl Bolton, Jr.
Date
1977Advisor
Renard, R. J.
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Show full item recordAbstract
Defense Meteorological Satellite Program (DMSP) and
Synchronous Meteorological Satellite (SMS-2) digital satellite
data, both visual and infrared, are processed and
analyzed in context with transient/stationary synoptic ship
reports, in an effort to identify areas of marine fog occurrence.
The eastern North Pacific Ocean was chosen as the area of study; for various reasons the period was limited
to 5-9 August 1976. Histograms and two-dimensional plots
of visual and infrared data are generated as a function
of five categories of fog/no-fog occurrence. Optimal
ranges of visual and infrared digital count values associated
with each of the five categories of fog occurrence
in the study area are proposed. In addition, the height
of the cloud base is computed for all processed SMS-2
data points, based on a formulation derived from radiation
physics and empiricism available from the University of
Wisconsin. Insofar as advancing the skill of objectively
identifying marine fog areas from weather satellite observations
is concerned, the results of this study are considered
suggestive but not definitive, in part due to the
limited data sample. The relation of the study to prior
work at the Naval Postgraduate School, using NOAA polarorbiting
satellite data, is noted.
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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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