Single Doppler Radar Measurements of Turbulence Profiles in the Convective Boundary Layer

Abstract

- turbulence information from noise-like signal superimposed on theleast-squares fit for {VAD} technique. {S}ingle scan data providesinformation from turbulence of sizes pulse volume scale to diameterof the circle swept out by the radar in its conical scan (2{R}).{T}he authors enhanced this technique invented by {W}ilson (1970)({CONF}.8) by sampling more scan{S}. {F}rom the scan-to-scan variationof the velocity turbulence from scales > 2{R} can be measured. -elevation angles for minimum errors: 45deg for vertical momentumfluxes; 90deg for variance of vertical velocity - only possible ifparticulate scatteres present in atmosphere that are light enoughto be influenced by small eddies (eg. {CBL} in {C}olorado from {M}aythrough {S}eptember; upslope snowstorm, drizzle) - covariance errorsca 0.04 m2s2