The effect of sodar beamwander and tilt on Doppler-derived turbulence measurements
Abstract
Measurements of horizontal and vertical velocity spectra as well as the vertical flux of horizontal momentum were carried out using a four-beam acoustic Doppler sodar system. Results obtained indicate that the effects of spatial separation of sampling volumes, as well as the turbulence-induced beam wander and tilt may severely affect variance measurements and limit the usefulness of sodar measurements for determinations of the wind-velocity variance and covariance.
- Publication:
-
7th Symposium on Meteorological Observations and Instrumentations
- Pub Date:
- 1991
- Bibcode:
- 1991smoi.proc..422N
- Keywords:
-
- Atmospheric Turbulence;
- Doppler Radar;
- Radar Beams;
- Sodar;
- Turbulence Meters;
- Horizontal Orientation;
- Vertical Orientation;
- Wind Velocity Measurement;
- Acoustics