Laser Doppler Dust Devil Measurements |
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11 SCAN air temperature analysis Angular core width anticyclonic approximately Arizona atmospheric atmospheric vortex August 26 AVRA Valley AZIMUTH ANGLE DEGREES backscatter intensity profile beam cell convective plume cumulus DAY 235 RUN day period density devils were observed diameter dust devil activity dust devil appears Dust devil core dust devil data dust devil development Dust devil peak Dust devils occur dust whirl electric field Elevation Angle Figure 21 flow field frequency frequency translator Gila River height horizontal Idso increase Kaimal lapse rate Laser Doppler layer measurements meteorological conditions Mojave Desert N/m² nephelometer peak integrated signal peak signal transport peak velocity Phoenix recorded RUN 5 ELEVATION RUN 9 scan plane second dust devil sensor shown in Figure SLDV system spectrum analyzer superadiabatic surface temperature test program VELOCITY m/s velocity plots velocity profiles Velocity time history vortex vortex tube vortices wind velocity x-y plot