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RISA Study of the Convective Boundary-Layer Dynamics Using Single Doppler Radar Measurements
Publisher: American Meteorological Society
Abstract: The kinematic and dynamical properties of the convective planetary boundary layer (CBL) with shear are studied using single Doppler radar measurements. The data were collected using single K-band (0.87 cm) Doppler radar ...
Diurnal Patterns of Rainfall in Northwestern South America. Part III: Diurnal Gravity Waves and Nocturnal Convection Offshore
Publisher: American Meteorological Society
Abstract: Afternoon/evening near-coastal convection over land is easily understood as a response to solar heating of the land, turbulent transfer of heat and moisture to the boundary layer, and lifting of air by vigorous sea-breeze ...
Diurnal Patterns of Rainfall in Northwestern South America. Part II: Model Simulations
Publisher: American Meteorological Society
Abstract: This second paper of a three-part series documents the ability of the fifth-generation Pennsylvania State University?NCAR Mesoscale Model (MM5) to successfully replicate some known aspects of the rainfall of northwestern ...
On the Value of Time-Lag-Ensemble Averaging to Improve Numerical Model Predictions of Aircraft Icing Conditions
Publisher: American Meteorological Society
Abstract: AbstractThe High-Resolution Rapid Refresh (HRRR) model with its hourly updating cycles provides multiple weather forecasts valid at any given time. A logical combination of these individual deterministic forecasts is ...
The Prediction of Supercooled Large Drops by a Microphysics and a Machine Learning Model for the ICICLE Field Campaign
Publisher: American Meteorological Society
Lee Waves Associated with a Commercial Jetliner Accident at Denver International Airport
Publisher: American Meteorological Society
Abstract: t 1818 mountain standard time 20 December 2008, a Boeing 737 jetliner encountered significant crosswinds while accelerating for takeoff at the Denver International Airport (DIA), ran off the side of the runway, and burst ...
Applications of the Adjoint Technique to Short-Range Ensemble Forecasting of Mesoscale Convective Systems
Publisher: American Meteorological Society
Abstract: The feasibility of applying a mesoscale adjoint model to the creation of an ensemble for short-range simulations of mesoscale convective systems (MCSs) is explored. Because past studies show that forecasters routinely ...
Effect of Time Step Size in MM5 Simulations of a Mesoscale Convective System
Publisher: American Meteorological Society
Abstract: Results from simulations of a mesoscale convective system (MCS) that occurred in a weakly forced large-scale environment show significant sensitivity to the time step size chosen for model integration. As the time step is ...
Diurnal Patterns of Rainfall in Northwestern South America. Part I: Observations and Context
Publisher: American Meteorological Society
Abstract: One of the rainiest areas on earth, the Panama Bight and Pacific (western) littoral of Colombia, is the focal point for a regional modeling study utilizing the fifth-generation Pennsylvania State University?NCAR Mesoscale ...
Snow Nowcasting Using a Real-Time Correlation of Radar Reflectivity with Snow Gauge Accumulation
Publisher: American Meteorological Society
Abstract: This paper describes and evaluates an algorithm for nowcasting snow water equivalent (SWE) at a point on the surface based on a real-time correlation of equivalent radar reflectivity (Ze) with snow gauge rate (S). It is ...