Accession Number : AD0674179

Title :   WIND CORRELATION AND VARIABILITY IN TIME AND SPACE,

Corporate Author : ATMOSPHERIC SCIENCES LAB WHITE SANDS MISSILE RANGE N MEX

Personal Author(s) : Armendariz,Manuel ; Lang,Virgil D.

Report Date : JUL 1968

Pagination or Media Count : 43

Abstract : Wind velocity data gathered from three Aerovane anemometers arranged in a triangular array were compared for varying lag times and sample averaging intervals. The anemometers were placed 275 meters apart at the vertices of an equilateral triangle at a height of 19 meters above the surface. Correlation coefficients, coherence, and root mean square (RMS) of wind velocity differences between anemometers were computed for different stability regimes and varied lag times. The wind direction relative to lines drawn between the instruments was considered in the analysis. In general, it was found that as stability increases, the correlation and coherence functions become smaller. There is a rapid drop in correlation as the lag time is increased, with negligible correlation after 100 seconds elapsed time. The advantage of using a long sampling interval in predicting the wind in time and space is demonstrated. (Author)

Descriptors :   (*UPPER ATMOSPHERE, *WIND), (*ANEMOMETERS, PHASED ARRAYS), GUIDED MISSILE RANGES, VELOCITY, STABILITY, PREDICTIONS, SAMPLING, CORRELATION TECHNIQUES

Subject Categories : Meteorology
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE