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RISThe Stability of Cloud Top with Regard to Entrainment: Amendment of the Theory of Cloud-Top Entrainment Instability
Publisher: American Meteorological Society
Abstract: The stability of a uniformly saturated cloud layer separated from an overlying nonturbulent unsaturated layer by a thin inversion is considered. The stability of the interface can be described by entraining a parcel of air ...
The Roughness Length for Heat and Other Vegetation Parameters for a Surface of Short Grass
Publisher: American Meteorological Society
Abstract: Observations are presented that were made in the lower 2 m of the atmosphere and in the soil near the Cabauw mast in the Netherlands. The surroundings of the mast are horizontally homogeneous and the soil is covered with ...
Radiation Fog: A Comparison of Model Simulation with Detailed Observations
Publisher: American Meteorological Society
Abstract: A one-dimensional model designed to study the formation, growth, and dissipation of radiation fog is described. The model is compared with detailed observations made at the 200-m tower at Cabauw in the Netherlands. This ...
Simulation of Diurnal Variation in a Stratocumulus-capped Marine Boundary Layer during FIRE
Publisher: American Meteorological Society
Abstract: A model simulation is presented of the diurnal cycle of a marine stratocumulus-capped boundary layer. The model results are compared with observations obtained during the 1987 First ISCCP (International Satellite Cloud ...
Comparison of the ECMWF Reanalysis with FIRE I Observations: Diurnal Variation of Marine Stratocumulus
Publisher: American Meteorological Society
Abstract: The European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis (ERA) results for July 1987 are compared with stratocumulus observations for the same period made during the First International Satellite Cloud ...
Observed Lagrangian Transition of Stratocumulus into Cumulus during ASTEX: Mean State and Turbulence Structure
Publisher: American Meteorological Society
Abstract: Aircraft measurements made during the ?First Lagrangian? of the Atlantic Stratocumulus Transition Experiment (ASTEX) between 12 and 14 June 1992 are presented. During this Lagrangian experiment an air mass was followed ...
Microphysical and Turbulent Structure of Nocturnal Stratocumulus as Observed during ASTEX
Publisher: American Meteorological Society
Abstract: Measurements of the microphysical and turbulence structure of stratocumulus made during the Atlantic Stratocumulus Transition Experiment are presented. The measurements made from a C-130 aircraft, belonging to the ...
Analogies between Mass-Flux and Reynolds-Averaged Equations
Publisher: American Meteorological Society
Abstract: In many large-scale models mass-flux parameterizations are applied to prognose the effect of cumulus cloud convection on the large-scale environment. Key parameters in the mass-flux equations are the lateral entrainment ...
Can an E–l Turbulence Closure Simulate Entrainment in Radiatively Driven Convective Boundary Layers?
Publisher: American Meteorological Society
Abstract: The simulation of entrainment by an (E?l) turbulent kinetic energy?diagnostic length scale closure model is investigated in a smoke cloud convective boundary layer. The behavior of the E?l scheme is compared with two simple ...
The Contribution of Shear to the Evolution of a Convective Boundary Layer
Publisher: American Meteorological Society
Abstract: The role of shear in the development and maintenance of a convective boundary layer is studied by means of observations and large eddy simulations (LESs). Particular emphasis is given to the growth of the boundary layer ...