Stratus cloud liquid water and turbulence profiles using a K{sub {alpha}}-band Doppler radar and a microwave radiometer
- NOAA Environmental Technology Lab., Boulder, CO (United States)
- National Center for Atmospheric Research, Boulder, CO (United States)
The goal of the Atlantic Stratocumulus Transition Experiment (ASTEX) held in the North Atlantic during June 1992 was to determine the physical reasons for the transition from stratocumulus to broken clouds. Some possible reasons for this transition were such things as cloud top entrainment instability, and the decoupling effects of drizzle. As part of this experiment, the ETL cloud sensing Doppler radar and three channel microwave radiometer were deployed on the island of Porto Santo in the Madeira Islands of Portugal along with a CO{sub 2} Doppler lider. Drizzle properties in stratus were examined using a log-normal droplet distribution model which related the three parameters of the model to the first 3 Doppler spectral moments of the cloud radar. With these moments, the authors are then able to compute the drizzle droplet concentration, modal radius, liquid water and liquid water flux as a function of height.
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Oceanic and Atmospheric Administration, Washington, DC (United States)
- OSTI ID:
- 467666
- Report Number(s):
- CONF-9409461-; TRN: IM9721%%94
- Resource Relation:
- Conference: 2. International conference on air-sea interaction and on meterology and oceanography of the coastal zone, Lisbon (Portugal), 22-27 Sep 1994; Other Information: PBD: [1994]; Related Information: Is Part Of Second international conference on air-sea interaction and on meteorology and oceanography of the coastal zone; PB: 343 p.
- Country of Publication:
- United States
- Language:
- English
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