Computer Science – Sound
Scientific paper
Mar 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976bolme..10...55f&link_type=abstract
Boundary-Layer Meteorology, vol. 10, Mar. 1976, p. 55-68.
Computer Science
Sound
8
Atmospheric Boundary Layer, Convection Currents, Doppler Radar, Echo Sounding, Velocity Distribution, Wind Velocity, Atmospheric Circulation, Power Spectra, Vectors (Mathematics), Wind Direction, Wind Velocity Measurement
Scientific paper
Three-dimensional air motion, observed with radar in a convective planetary boundary layer under light wind conditions, is organized in cellular structures scaled from 2 to 5 km; simultaneous acoustic echosonde measurements indicate that near the ground there are smaller cells than those observable by the radar. At heights of 400 m, cell scales become as large as those observable by the radar. Pressure fluctuations at the ground measured with spatial pressure transducers, at the same time as the radar and echosonde observations, traveled at the same speed and direction as the radar volume-averaged wind. The length scale determined at the ground with pressure fluctuation data was between 1.2 and 2.4 km, smaller than the largest radar-measured motion scales.
Chadwick R. B.
Frisch Shelby A.
Moninger W. R.
Young Jane M.
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