Radar observations of updrafts, downdrafts, and turbulence in fair-weather cumuli

Observations from a 94-GHz radar are used to define the vertical structure of marine fair-weather cumuli. Doppler spectra obtained from the radar provide mean vertical velocities as well as detailed spectral shapes that can be used to infer small-scale vertical velocity shear, illuminate cloud micro...

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Veröffentlicht in:	Journal of the atmospheric sciences 2001-07, Vol.58 (13), p.1750-1766
Hauptverfasser:	KOLLIAS, P, ALBRECHT, B. A, LHERMITTE, R, SAVTCHENKO, A
Format:	Artikel
Sprache:	eng
Schlagworte:	Atmosphere ATMOSPHERIC CIRCULATION ATMOSPHERIC TURBULENCE Clouds CUMULUS CLOUDS DOPPLER RADAR Earth, ocean, space Exact sciences and technology External geophysics FAIR WEATHER METEOROLOGICAL RADAR Meteorology Radar RADAR MEASUREMENT Turbulence VERTICAL AIR CURRENTS Water in the atmosphere (humidity, clouds, evaporation, precipitation) Weather WIND MEASUREMENT
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Beschreibung
Zusammenfassung:	Observations from a 94-GHz radar are used to define the vertical structure of marine fair-weather cumuli. Doppler spectra obtained from the radar provide mean vertical velocities as well as detailed spectral shapes that can be used to infer small-scale vertical velocity shear, illuminate cloud microphysical processes, and provide estimates of turbulence dissipation rates.
ISSN:	0022-4928 1520-0469
DOI:	10.1175/1520-0469(2001)058<1750:roouda>2.0.co;2