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RISEnvironmental Controls on the Simulated Diurnal Cycle of Warm-Season Precipitation in the Continental United States
Publisher: American Meteorological Society
Abstract: The diurnal cycle of warm-season precipitation in the Rocky Mountains and adjacent Great Plains of the United States is examined using a numerical modeling framework designed to isolate the role of terrain-influenced ...
Long-Lived Mesoconvective Vortices and Their Environment. Part II: Induced Thermodynamic Destabilization in Idealized Simulations
Publisher: American Meteorological Society
Abstract: Idealized numerical simulations are used to quantify the effect of quasi-balanced lifting arising from the interaction of the ambient vertical shear with midtropospheric cyclonic vortices (MCVs) generated by mesoscale ...
Long-Lived Mesoconvective Vortices and Their Environment. Part I: Observations from the Central United States during the 1998 Warm Season
Publisher: American Meteorological Society
Abstract: Observations from the modernized United States National Weather Service (NWS) data network are used to assess the frequency and general characteristics of midtropospheric cyclonic vortices (MCVs) generated by mesoscale ...
Structure and Evolution of the 22 February 1993 TOGA COARE Squall Line: Numerical Simulations
Publisher: American Meteorological Society
Abstract: In this study a numerical cloud model is used to simulate the three-dimensional evolution of an oceanic tropical squall line observed during the Tropical Ocean Global Atmosphere Coupled Ocean?Atmosphere Response Experiment ...
Numerical Simulation of Radial Cloud Bands within the Upper-Level Outflow of an Observed Mesoscale Convective System
Publisher: American Meteorological Society
Abstract: Turbulence affecting aircraft is frequently reported within bands of cirrus anvil cloud extending radially outward from upstream deep convection in mesoscale convective systems (MCSs). A high-resolution convection permitting ...
Mechanisms Supporting Long-Lived Episodes of Propagating Nocturnal Convection within a 7-Day WRF Model Simulation
Publisher: American Meteorological Society
Abstract: A large-domain explicit convection simulation is used to investigate the life cycle of nocturnal convection for a one-week period of successive zonally propagating heavy precipitation episodes occurring over the central ...
Sensitivity of the PBL and Precipitation in 12-Day Simulations of Warm-Season Convection Using Different Land Surface Models and Soil Wetness Conditions
Publisher: American Meteorological Society
Abstract: A coupled land surface?atmospheric model that permits grid-resolved deep convection is used to examine linkages between land surface conditions, the planetary boundary layer (PBL), and precipitation during a 12-day warm-season ...
Inferences of Predictability Associated with Warm Season Precipitation Episodes
Publisher: American Meteorological Society
Abstract: Herein preliminary findings are reported from a radar-based climatology of warm season precipitation ?episodes.? Episodes are defined as time?space clusters of heavy precipitation that often result from sequences of organized ...
Effects of Surface Heat and Moisture Exchange on ARW-WRF Warm-Season Precipitation Forecasts over the Central United States
Publisher: American Meteorological Society
Abstract: The evolution of the daytime planetary boundary layer (PBL) and its association with warm-season precipitation is strongly impacted by land?atmosphere heat and moisture exchange (hereafter surface exchange). However, ...
Nocturnal Elevated Convection Initiation of the PECAN 4 July Hailstorm
Publisher: American Meteorological Society
Abstract: AbstractDuring the Plains Elevated Convection at Night (PECAN) experiment, an isolated hailstorm developed on the western side of the PECAN study area on the night of 3?4 July 2015. One of the objectives of PECAN was to ...