THE EFFECTS OF AMBIENT CONDITIONS ON CESIUM CLOCK RATES

Lee A. Breakiron

Abstract:	The rates and errors of 42 cesium clocks in 6 different vaults at USNO were studied using 18 months of hourly data. Temperature effects were found to be negligible when the temperature was controlled to within +1°C. During excursions much greater than this, rate changes in either sense are possible. No short-term humidity effects were evident, but there appears to be an annual variation in clock rates (in either sense) dependent on absolute humidity. Significant intercorrelations between clocks indicate the general importance of environmental conditions of some kind.
Published in:	Proceedings of the 19th Annual Precise Time and Time Interval Systems and Applications Meeting December 1 - 3, 1989 Sheraton Hotel Redondo Beach, California
Pages:	175 - 184
Cite this article:	Breakiron, Lee A., "THE EFFECTS OF AMBIENT CONDITIONS ON CESIUM CLOCK RATES," Proceedings of the 19th Annual Precise Time and Time Interval Systems and Applications Meeting, Redondo Beach, California, December 1987, pp. 175-184.
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