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Relevance of a Tuning-Fork Effect for Temperature Measurements with the Gill Solent HS Ultrasonic Anemometer–Thermometer
Publisher: American Meteorological Society
Abstract: The performance of a new type of sonic anemometer?thermometer (called a sonic), the Solent-Research HS, manufactured by Gill Instruments, Lymington, United Kingdom, was investigated. Measurements of the three wind-velocity ...
Supersaturation Fluctuations during the Early Stage of Cumulus Formation
Publisher: American Meteorological Society
Abstract: n time scales that are long compared to the phase relaxation time, a quasi-steady supersaturation sqs is expected to exist in clouds. On shorter time scales, however, turbulent fluctuations of temperature and water vapor ...
Homogeneous and Inhomogeneous Mixing in Cumulus Clouds: Dependence on Local Turbulence Structure
Publisher: American Meteorological Society
Abstract: The helicopter-borne instrument payload known as the Airborne Cloud Turbulence Observation System (ACTOS) was used to study the entrainment and mixing processes in shallow warm cumulus clouds. The characteristics of the ...
Observations of Small-Scale Turbulence and Energy Dissipation Rates in the Cloudy Boundary Layer
Publisher: American Meteorological Society
Abstract: Tethered balloon?borne measurements with a resolution in the order of 10 cm in a cloudy boundary layer are presented. Two examples sampled under different conditions concerning the clouds' stage of life are discussed. The ...
On the Use of Hot-Wire Anemometers for Turbulence Measurements in Clouds
Publisher: American Meteorological Society
Abstract: The use of a hot-wire anemometer for high-resolution turbulence measurements in a two-phase flow (e.g., atmospheric clouds) is discussed. Experiments in a small wind tunnel (diameter of 0.2 and 2 m in length) with a mean ...
Measurements of Turbulent Mixing and Subsiding Shells in Trade Wind Cumuli
Publisher: American Meteorological Society
Abstract: igh-resolution measurements of the turbulent, thermodynamic, and microphysical structure of the edges of trade wind cumuli have been performed with the Airborne Cloud Turbulence Observation System. Lateral entrainment of ...
Probing Finescale Dynamics and Microphysics of Clouds with Helicopter-Borne Measurements
Publisher: American Meteorological Society
Abstract: Helicopter-based measurements provide an opportunity for probing the finescale dynamics and microphysics of clouds simultaneously in space and time. Due to the low true air speed compared with research aircraft, a helicopter ...
Observations of aerosol, cloud, turbulence, and radiation properties at the top of the marine boundary layer over the Eastern North Atlantic Ocean: The ACORES campaign
Publisher: American Meteorological Society
Abstract: Helicopter-borne observations with unprecedented high resolution provide new insights in the fine-scale structure of marine boundary layer clouds and aerosol stratification over the Eastern North Atlantic.We report on the ...
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