Comparison of Cross-Path Optical Anemometer Data from ASCOT 1979 and 1980 Experiments

摘要

The spatial averaging and sensitivity to low wind speeds associated with optical cross-path wind sensing are shown to be valuable assets in complex terrain wind studies. Optical anemometer paths were located across valleys which channel drainage winds. The optical path component perpendicular to the valley stream flow was used to isolate the drainage wind component. The results from these instruments have been used to determine the timing, strength and extent of the drainage, morning upslope and afternoon sea-breeze winds. These data have also been used to determine complex terrain effects on auto-spectral wind variability at a point from a cup-vane anemometer and the effect of this variability on numerical wind field models which include spatial averaging. (ERA citation 07:047977)