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Proceedings Paper

Forecasting the atmospheric optical turbulence neutral events
Author(s): Gail M. Vaucher; Robert W. Endlich
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Paper Abstract

Atmospheric optical turbulence (AOT) degrades seeing conditions over long horizontal paths. Embedded into the typical AOT diurnal cycle are two time periods in which the AOT is at a minimum; these periods are called neutral events (NE). Previously, we stated that the NE generally occurs 60 min after sunrise and 40 min before sunset. We refine this empirical model using a statistical analysis on a March-June 1994 AOT-NE data set sampled over the Tularosa Basin, New Mexico. Reviewing the months successively, a systematic change in the time differential between sunrise (sunset) and NE was observed. This and other March-to-June trends are discussed, as are several factors that cause variations in the NE forecast. We conclude with recommendations for refining the AOT-NE forecasting model.

Paper Details

Date Published: 15 June 1995
PDF: 10 pages
Proc. SPIE 2471, Atmospheric Propagation and Remote Sensing IV, (15 June 1995); doi: 10.1117/12.211932
Show Author Affiliations
Gail M. Vaucher, Science and Technology Corp. (United States)
Robert W. Endlich, Army Research Lab. (United States)

Published in SPIE Proceedings Vol. 2471:
Atmospheric Propagation and Remote Sensing IV
J. Christopher Dainty, Editor(s)

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