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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 ...
High-Resolution Downscaled Simulations of Warm-Season Extreme Precipitation Events in the Colorado Front Range under Past and Future Climates
Publisher: American Meteorological Society
Abstract: high-resolution case-based approach for dynamically downscaling climate model data is presented. Extreme precipitation events are selected from regional climate model (RCM) simulations of past and future time periods. Each ...
Greenhouse Gas–Induced Changes in Summer Precipitation over Colorado in NARCCAP Regional Climate Models
Publisher: American Meteorological Society
Abstract: recipitation changes between 32-yr periods in the late twentieth and mid-twenty-first centuries are investigated using regional climate model simulations provided by the North American Regional Climate Change Assessment ...
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 ...
A Multiscale Evaluation of Multisensor Quantitative Precipitation Estimates in the Russian River Basin
Publisher: American Meteorological Society
Abstract: AbstractThe Russian River in northern California is an important hydrological resource that typically depends on a few significant precipitation events per year, often associated with atmospheric rivers (ARs), to maintain ...