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The Numerical Representation of Entrainment in Parameterizations of Boundary Layer Turbulent Mixing
Publisher: American Meteorological Society
Abstract: Problems have been identified with parameterizations of convective boundary layers, in particular with their numerical treatment of the capping inversion. It is shown that the turbulence scheme can combine with the numerical ...
Conservative Explicit Unrestricted-Time-Step Multidimensional Constancy-Preserving Advection Schemes
Publisher: American Meteorological Society
Abstract: The multidimensional advection schemes described in this study are based on a strictly conservative flux-based control-volume formulation. They use an explicit forward-in-time update over a single time step, but there are ...
Seamless Stratocumulus Simulation across the Turbulent Gray Zone
Publisher: American Meteorological Society
Abstract: pragmatic approach for representing partially resolved turbulence in numerical weather prediction models is introduced and tested. The method blends a conventional boundary layer parameterization, suitable for large grid ...
A New Boundary Layer Mixing Scheme. Part II: Tests in Climate and Mesoscale Models
Publisher: American Meteorological Society
Abstract: A new turbulent mixing scheme, described in Part I of this paper, is tested in the climate and mesoscale configurations of the U.K. Met. Office?s Unified Model (UM). In climate configuration, the scheme is implemented along ...
CORRIGENDUM
Publisher: American Meteorological Society
The Surface Downwelling Solar Radiation Surplus over the Southern Ocean in the Met Office Model: The Role of Midlatitude Cyclone Clouds
Publisher: American Meteorological Society
Abstract: he authors study the role of clouds in the persistent bias of surface downwelling shortwave radiation (SDSR) in the Southern Ocean in the atmosphere-only version of the Met Office model. The reduction of this bias in the ...
A New Boundary Layer Mixing Scheme. Part I: Scheme Description and Single-Column Model Tests
Publisher: American Meteorological Society
Abstract: A new boundary layer turbulent mixing scheme has been developed for use in the UKMO weather forecasting and climate prediction models. This includes a representation of nonlocal mixing (driven by both surface fluxes and ...
The Turbulent Structure and Diurnal Growth of the Saharan Atmospheric Boundary Layer
Publisher: American Meteorological Society
Abstract: he turbulent structure and growth of the remote Saharan atmospheric boundary layer (ABL) is described with in situ radiosonde and aircraft measurements and a large-eddy simulation model. A month of radiosonde data from ...
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