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RISThe Representation of Cumulus Convection in High-Resolution Simulations of the 2013 Colorado Front Range Flood
Publisher: American Meteorological Society
Abstract: odel simulations of the 2013 Colorado Front Range floods are performed using 4-km horizontal grid spacing to evaluate the impact of using explicit convection (EC) versus parameterized convection (CP) in the model convective ...
The Sensitivity of Momentum Transport and Severe Surface Winds to Environmental Moisture in Idealized Simulations of a Mesoscale Convective System
Publisher: American Meteorological Society
Abstract: nalysis of a pair of three-dimensional simulations of mesoscale convective systems (MCSs) reveals a significant sensitivity of convective momentum transport (CMT), MCS motion, and the generation of severe surface winds to ...
The Effect of Upstream Convection on Downstream Precipitation
Publisher: American Meteorological Society
Abstract: Operational forecasters in the southeast and mid-Atlantic regions of the United States have noted a positive quantitative precipitation forecast (QPF) bias in numerical weather prediction (NWP) model forecasts downstream ...
The Sensitivity of Numerical Forecasts to Convective Parameterization: A Case Study of the 17 February 2004 East Coast Cyclone
Publisher: American Meteorological Society
Abstract: The sensitivity of numerical model forecasts of coastal cyclogenesis and frontogenesis to the choice of model cumulus parameterization (CP) scheme is examined for the 17 February 2004 southeastern U.S. winter weather event. ...
The Role of Momentum Transport in the Motion of a Quasi-Idealized Mesoscale Convective System
Publisher: American Meteorological Society
Abstract: Momentum transport is examined in a simulated midlatitude mesoscale convective system (MCS) to investigate its contribution to MCS motion. Momentum budgets are computed using model output to quantify the role of specific ...
Potential Vorticity (PV) Thinking in Operations: The Utility of Nonconservation
Publisher: American Meteorological Society
Abstract: The use of the potential vorticity (PV) framework by operational forecasters is advocated through case examples that demonstrate its utility for interpreting and evaluating numerical weather prediction (NWP) model output ...
High-Resolution Model-Based Investigation of Moisture Transport into the Pacific Northwest during a Strong Atmospheric River Event
Publisher: American Meteorological Society
Abstract: AbstractA series of precipitation events impacted the Pacific Northwest during the first two weeks of November 2006. This sequence was punctuated by a particularly potent inland-penetrating atmospheric river (AR) that ...
Wind Profilers to Aid with Monitoring and Forecasting of High-Impact Weather in the Southeastern and Western United States
Publisher: American Meteorological Society
Abstract: ith funding provided by the 2012 Disaster Relief Act (Sandy Supplemental), NOAA?s Earth System Research Laboratory Physical Sciences Division has installed three Doppler wind-profiling radars and surface meteorology towers ...
The Landfall and Inland Penetration of a Flood-Producing Atmospheric River in Arizona. Part II: Sensitivity of Modeled Precipitation to Terrain Height and Atmospheric River Orientation
Publisher: American Meteorological Society
Abstract: his manuscript documents numerical modeling experiments based on a January 2010 atmospheric river (AR) event that caused extreme precipitation in Arizona. The control experiment (CNTL), using the Weather Research and ...
Verification of Quantitative Precipitation Reforecasts over the Southeastern United States
Publisher: American Meteorological Society
Abstract: OAA?s second-generation reforecasts are approximately consistent with the operational version of the 2012 NOAA Global Ensemble Forecast System (GEFS). The reforecasts allow verification to be performed across a multidecadal ...