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RISA Multiple Mass-Flux Parameterization for the Surface-Generated Convection. Part I: Dry Plumes
Publisher: American Meteorological Society
Abstract: The present study introduces a parameterization for the mixing in the surface-generated free convection regime (including dry and moist convection cases). The parameterization explicitly represents the plumes that drive ...
A Multiple Mass Flux Parameterization for the Surface-Generated Convection. Part II: Cloudy Cores
Publisher: American Meteorological Society
Abstract: The multiple mass-flux approach introduced in a companion paper aims at parameterizing the surface-generated convection in the atmosphere. The original aspects of this model are as follows. A number of convective updrafts ...
Local Structure Parameters of Temperature and Humidity in the Entrainment-Drying Convective Boundary Layer: A Large-Eddy Simulation Analysis
Publisher: American Meteorological Society
Abstract: Many wave propagation applications depend on the local, instantaneous structure parameters of humidity and of potential temperature . This study uses a large-eddy simulation to explore and compare the variability of and ...
Power Laws and the Empirical Representation of Velocity and Directional Shear
Publisher: American Meteorological Society
Abstract: Wind profiles over a smooth frozen sea were used to determine the exponent in the empirical power laws for wind modulus and both horizontal components. Classification according to stability shows the expected trend but ...
Equatorial Mountain Torques and Cold Surge Preconditioning
Publisher: American Meteorological Society
Abstract: The evolution of the two components of the equatorial mountain torque (EMT) applied by mountains on the atmosphere is analyzed in the NCEP reanalysis. A strong lagged relationship between the EMT component along the Greenwich ...
Impact of Subgrid-Scale Orography on Equatorial Angular Momentum Budget and the Cold Surges in a General Circulation Model
Publisher: American Meteorological Society
Abstract: he dynamical relations between equatorial atmospheric angular momentum (EAAM), equatorial mountain torques, and cold surges are analyzed in a general circulation model (GCM). First, the authors show that the global EAAM ...
Three-Dimensional Computation of Flow around Groyne
Publisher: American Society of Civil Engineers
Abstract: The three-dimensional (3D) numerical simulation of a steady, shallow turbulent flow around a groyne in a rectangular channel is presented. A method used to track a moving surface boundary and to follow its evolution, using ...
Parameterization of the Urban Energy Budget with the Submesoscale Soil Model
Publisher: American Meteorological Society
Abstract: The thermal component of the Soil Model for Submesoscales, Urbanized Version (SM2-U), is described. SM2-U is an extension on a physical basis of the rural Interactions between Soil, Biosphere, and Atmosphere (ISBA) soil ...
Variability of Local Structure Parameters in the Convective Boundary Layer
Publisher: American Meteorological Society
Abstract: The propagation of optical and acoustical waves is affected by the atmospheric turbulence through the local instantaneous refractive index structure parameter in a volume of characteristic size r, denoted Cn,r2. Often r ...
Design and Experimental Assessment of an Elastically Averaged Binary Manipulator Using Pneumatic Air Muscles for Magnetic Resonance Imaging Guided Prostate Interventions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Early diagnostic and treatment of prostate cancer could be achieved using magnetic resonance imaging (MRI) to improve tumor perceptibility. Nonetheless, performing intra-MRI interventions present ...