Investigation of temperature fluctuations near the air-sea interface
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Authors
Ramzy, James Robert
Young, Ernest Tillson
Subjects
AIR WATER INTERACTIONS
SIGNAL ANALYSIS
GRADIENTS
TEMPERATURE
SIGNAL ANALYSIS
GRADIENTS
TEMPERATURE
Advisors
Boston, Noel E.
Date of Issue
1968-12
Date
1968-12
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
Measurements of air temperature fluctuations as close as 2.5 cm above the surface of a pond in the presence of wind generated waves were made. Fast response thermistors were used, one at constant absolute height and one mounted on a styrofoam float. Data were collected on an Ampex CP-100 tape recorder using FM record amplifiers and a tape speed of 1 and 7/8 ips. The data were digitized by an SDS-9300 hybrid computer and analyzed by an IBM 360/67 digital computer. Temperature fluctuations as large as 5C in as little as 0.2 seconds were observed with the float mounted thermistor. There was strong correlation between the fixed and floating thermistor readings, with the fluctuation amplitude of the floating thermistor being more than three times larger than the fluctuation amplitude for the fixed thermistor. This ratio decreased when the height of the float mounted thermistor was raised. The large fluctuations measured by the floating thermistor are believed to be caused by the vertical motion of the thermistor in a large vertical temperature gradient immediately above the sea surface. More detailed instrumentation is needed to confirm this hypothesis.
Type
Thesis
Description
Series/Report No
Department
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funding
Format
85 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
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.