Santa Ana associated offshore fog : forecasting with a sequential model.

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Author
Backes, Douglas Allen
Date
1977Advisor
Leipper, Dale F.
Second Reader
Jung, Glenn H.
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Show full item recordAbstract
Aircraft measurements made offshore during a coastal
fog sequence by R.A. Markson are analyzed . Fog occurrence
and areal extent are determined using aircraft, ship and
shore station obs ervations obtained during the Cooperative
Experiment in West Coast Oceanography and Meteorology--1976
along with analyzed satellite visual and iril’ra-red imagery.
The offshore conditions are compared with those at the shore
stations using selected fog indices. Photographs of special
features observed are included .
The offshore conditions are classified into phases by
assigning limits within the specified fog indices used in
the modified Leipper fog model. The sequence of observed
fog events is compared to the ideal sequence. The trends
in the sequence are analyzed and a general relationship
between the phase sequence and the local offshore flow is
indicated . The Leipper indices, the Sari Dieg~
. raob and
the sequential fog model appear to ‘be useful in fog prediction
for the nearshore oceanic region from San Diego to Point
Conception.
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