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RISThe Importance of the Horizontal Advection of Hydrometeors in a Single-Column Model
Publisher: American Meteorological Society
Abstract: Single-column models (SCMs) are typically forced with profiles of vertical velocity and the divergence of water vapor and temperature due to horizontal advection. Vertical profiles of wind speed are also usually included ...
Aerosol Effects on Intensity of Landfalling Hurricanes as Seen from Simulations with the WRF Model with Spectral Bin Microphysics
Publisher: American Meteorological Society
Abstract: The evolution of a superhurricane (Katrina, August 2005) was simulated using the Weather Research and Forecasting Model (WRF; version 3.1) with explicit (nonparameterized) spectral bin microphysics (SBM). The new computationally ...
Conservative Split-Explicit Time Integration Methods for the Compressible Nonhydrostatic Equations
Publisher: American Meteorological Society
Abstract: Historically, time-split schemes for numerically integrating the nonhydrostatic compressible equations of motion have not formally conserved mass and other first-order flux quantities. In this paper, split-explicit integration ...
An Upper Gravity-Wave Absorbing Layer for NWP Applications
Publisher: American Meteorological Society
Abstract: Although the use of a damping layer near the top of a computational model domain has proven effective in absorbing upward-propagating gravity-wave energy in idealized simulations, this technique has been less successful ...
Four-Dimensional Variational Data Assimilation of Heterogeneous Mesoscale Observations for a Strong Convective Case
Publisher: American Meteorological Society
Abstract: On 19 September 1996, a squall line stretching from Nebraska to Texas with intense embedded convection moved eastward across the Kansas?Oklahoma area, where special observations were taken as part of a Water Vapor Intensive ...
The Ability of MM5 to Simulate Ice Clouds: Systematic Comparison between Simulated and Measured Fluxes and Lidar/Radar Profiles at the SIRTA Atmospheric Observatory
Publisher: American Meteorological Society
Abstract: The ability of the fifth-generation Pennsylvania State University?NCAR Mesoscale Model (MM5) to simulate midlatitude ice clouds is evaluated. Model outputs are compared to long-term meteorological measurements by active ...
Convectively Induced Secondary Circulations in Fine-Grid Mesoscale Numerical Weather Prediction Models
Publisher: American Meteorological Society
Abstract: esoscale numerical weather prediction models using fine-grid [O(1) km] meshes for weather forecasting, environmental assessment, and other applications capture aspects of larger-than-grid-mesh size, convectively induced ...