Urban-Small Building Complex Environment: W07US Stability Analysis, Volume AS-3 (Urban Versus Rural Diurnal Stability Cycles)

Report No. ARL-TR-4954
Authors: Gail Vaucher
Date/Pages: September 2009; 44 pages
Abstract: This report documents the urban diurnal stability cycle research, an outgrowth of the ongoing Urban Stability research begun with the WSMR 2003 Urban Study field project. The long term goal for this investigation is to develop an empirical Neutral Event Forecast Model for the urban environment. This quest stems from the success of a Neutral Event Forecast Model which was created for an operational high energy laser test facility located in a rural desert environment. Neutral events represent periods during which the atmosphere have a minimal impact on the laser operation; thus, they have a significant impact on the site mission. This report gives a background of stability from two perspectives, discusses the character of the urban stable conditions observed in the supporting datasets of this study, describes the rural and urban diurnal stability cycles, and finally presents qualitative equations for predicting the urban and rural diurnal stability cycle anchors known as the "neutral events."
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2009