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Life Cycle of Numerically Simulated Shallow Cumulus Clouds. Part II: Mixing Dynamics
Publisher: American Meteorological Society
Abstract: This paper is the second in a two-part series in which life cycles of six numerically simulated shallow cumulus clouds are systematically examined. The six clouds, selected from a single realization of a large-eddy simulation, ...
Life Cycle of Numerically Simulated Shallow Cumulus Clouds. Part I: Transport
Publisher: American Meteorological Society
Abstract: This paper is the first in a two-part series in which the life cycles of numerically simulated shallow cumulus clouds are systematically examined. The life cycle data for six clouds with a range of cloud-top heights are ...
Interpolation of LES Cloud Surfaces for Use in Direct Calculations of Entrainment and Detrainment
Publisher: American Meteorological Society
Abstract: Direct calculations of the entrainment and detrainment of air into and out of clouds require knowledge of the relative velocity difference between the air and the cloud surface. However, a discrete numerical model grid ...
The Influence of the Cloud Shell on Tracer Budget Measurements of LES Cloud Entrainment
Publisher: American Meteorological Society
Abstract: irect measurements of rates of entrainment into and detrainment from cumulus cloud cores obtained from LES model cloud fields produce values twice as large as those produced from tracer budget calculations. This difference ...
Unified Treatment of Thermodynamic and Optical Variability in a Simple Model of Unresolved Low Clouds
Publisher: American Meteorological Society
Abstract: Comparative studies of global climate models have long shown a marked sensitivity to the parameterization of cloud properties. Early attempts to quantify this sensitivity were hampered by diagnostic schemes that were ...
Precipitation in Stratocumulus Clouds: Observational and Modeling Results
Publisher: American Meteorological Society
Abstract: The spatial and temporal variability of precipitating stratocumulus layers is examined using aircraft observations, satellite retrievals of cloud optical depth, and one-dimensional models that include coalescence and a ...
Cloudiness and Marine Boundary Layer Dynamics in the ASTEX Lagrangian Experiments. Part II: Cloudiness, Drizzle, Surface Fluxes, and Entrainment
Publisher: American Meteorological Society
Abstract: The Analysis of the Atlantic Stratocumulus Transition Experiment (ASTEX) Lagrangians started in Part I is continued, presenting measurements of sea surface temperature, surface latent and sensible heat fluxes from bulk ...
Uncertainty in Cloud Optical Depth Estimates Made from Satellite Radiance Measurements
Publisher: American Meteorological Society
Abstract: The uncertainty in optical depths retrieved from satellite measurements of visible wavelength radiance at the top of the atmosphere is quantified. Techniques are briefly reviewed for the estimation of optical depth from ...
POCKETS OF OPEN CELLS AND DRIZZLE IN MARINE STRATOCUMULUS
Publisher: American Meteorological Society
Abstract: Data from recent field studies in the northeast and southeast Pacific are used to investigate pockets of open cells (POCs) that are embedded in otherwise uniform stratocumulus. The cellular structure within a POC resembles ...