P1.2
An electronic differential microbarograph system
PAPER WITHDRAWN
Carmen J. Nappo, NOAA/ERL/ARL/ATDD, Oak Ridge, TN; and D. L. Auble
The importance of the effects of gravity waves on all scales of atmospheric motions is increasingly being recognized. These effects are especially important on the meso- and microscales. Accordingly, field research and operational observation programs on these scales should be able to observe gravity waves over a wide range of time scales. This paper describes a low-cost electronic differential microbarograph system which is designed to be highly portable and to resolve pressure perturbations over a wide range of time scales. A differential pressure gauge measures the pressure difference between a sealed and thermally-insulated reference chamber and the atmosphere. Changes in reference chamber temperature introduce drift in the measurements; however, this drift can be removed during post processing by recoding the external temperature. In the event of sensor saturation, the chamber pressure is set to ambient pressure by opening a solenoid controlled valve. It is demonstrated that pressure perturbations over time periods can be constructed, and examples of observations from several field trials are given.
Poster Session 1, Grand Poster Night
Tuesday, 16 January 2001, 5:30 PM-7:00 PM
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