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RISModulation of Turbulence Energy by Longitudinal Rolls in an Unstable Planetary Boundary Layer
Publisher: American Meteorological Society
Abstract: Horizontal roll vortices influence the distribution of turbulence, with turbulence variances and fluxes concentrated in regions of positive roll vertical velocity ?r. This ?modulation? of turbulence can be explained simply ...
The Influence of Vertical Wind Shear on the Diameter of Cumulus Clouds in CCOPE
Publisher: American Meteorological Society
Abstract: The cloud-base diameters of 40 cumulus clouds traversed by aircraft on 14 days of the Cooperative Convective Precipitation Experiment (CCOPE) are shown to increase with the vertical shear of the horizontal wind through ...
The Fair Weather Boundary Layer in GATE: The Relationship of Subcloud Fluxes and Structure to the Distribution and Enhancement of Cumulus Clouds
Publisher: American Meteorological Society
Abstract: The structure of the convective atmospheric boundary layer and the characteristics of the associated turbulent mixing processes in undisturbed conditions over the tropical ocean are investigated using data collected during ...
A Comparison of Turbulence Measurements from Aircraft
Publisher: American Meteorological Society
Abstract: A performance analysis of the three turbulence-measuring aircraft which participated in the GATE is presented. These aircraft were a Lockheed C-130 operated by the Meteorological Research Flight Centre of the U.K. ...
Vertical Velocity in Oceanic Convection off Tropical Australia
Publisher: American Meteorological Society
Abstract: Time series of 1-Hz vertical velocity data collected during aircraft penetrations of oceanic cumulonimbus clouds over the western Pacific warm pool as part of the Equatorial Mesoscale Experiment (EMEX) are analyzed for ...
Perturbation Pressure at the Base of Cumulus Clouds in Low Shear
Publisher: American Meteorological Society
Abstract: We examine the pressure fields wound the cloud-base updraft of three cumulus clouds observed in environments with low vertical shear of the horizontal wind near cloud base. These fields are compared to the corresponding ...