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RISAtmospheric Transport Models for Complex Terrain
Publisher: American Meteorological Society
Abstract: Two codes, ATMOS1 and ATMOS2, have been developed to model respectively, wind fields and pollutant transport in three dimensions with particular application to complex terrain. ATMOS1 models wind fields with the use of a ...
Environmental 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 ...
Numerical Simulations of the Formation of Hurricane Gabrielle (2001)
Publisher: American Meteorological Society
Abstract: This study examines the formation of Hurricane Gabrielle (2001), focusing on whether an initial disturbance and vertical wind shear were favorable for development. This examination is performed by running numerical experiments ...
Initiation of Precipitation Episodes Relative to Elevated Terrain
Publisher: American Meteorological Society
Abstract: The western and central United States experience a pronounced diurnal cycle in rainfall during the warm season. Over the higher terrain west of 105°W, most precipitation occurs in the afternoon, whereas the central United ...
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 ...
Incorporating TOMS Ozone Measurements into the Prediction of the Washington, D.C., Winter Storm during 24–25 January 2000
Publisher: American Meteorological Society
Abstract: In this study, a methodology is proposed for incorporating total column ozone data from the Total Ozone Mapping Spectrometer (TOMS) into the initial conditions of a mesoscale prediction model. Based on the strong correlation ...