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Observing System Simulation Experiments on Assimilation of Multistatic Passive Radar Network Observations into the Warn-On Forecast System to Improve Short-Term Prediction of Thunderstorm Hazards
(2022-12-16)
The Warn-on-Forecast System (WoFS) assimilates radar and satellite observations to produce initial conditions for short-term forecasts of individual convective storms. The accuracy of the WoFS analysis is a function of the ...
A priori testing of subgrid-scale models for large eddy simulations in supersaturated conditions
(2023-05-12)
Turbulence is characterized by irregular movement in pressure and flow velocity. Better understanding of turbulent flow will help in the understanding of air movement including wind currents, dissipation of pollutants and ...
Subseasonal Winter Weather Predictability Associated with Single vs. Multiple Wave Pulse Events and their Impact on the Arctic Stratospheric Polar Vortex
(2020-07-30)
Variability in the Arctic stratospheric polar vortex can lead to extreme winter weather across the Northern Hemisphere, which can have large socioeconomic impacts. Dynamically, increased vertical wave activity from the ...
Improving Drop Size Distribution Retrieval and Rain Estimation from Polarimetric Radar Data using the Deep Neural Network
(2022-08)
Drop size distribution (DSD) and rain rate (R) have been estimated from polarimetric radar data are now available nationwide. DSD and R are essential in understanding rain microphysics. Past studies utilized parametrized ...
Using Machine Learning to Improve the NSSL's Warn-On-Forecast System's Prediction of Thunderstorm Location
(2023-08-04)
Deep learning (DL) models have become immensely popular in recent years, with many models creating accurate and high-skill predictions for a wide range of atmospheric phenomena. Using DL models for predicting convection ...
Examining Extreme Rainfall Forecast and Communication Processes in the South Central United States
(2021-08)
Extreme rainfall events have increased in parts of the United States and climate models project that trend to continue (Carter et al. 2018; Mullens et al. 2013; Hayhoe et al. 2018). As such, forecasters must be able to ...
Observing System Simulation Experiments Using Small Unmanned Aerial Vehicles in Various Configurations to Improve High-Resolution Forecasts of Convection
(2021)
There has been a lot of interest and development of small Unmanned Aerial Vehicles (sUAVs) to
obtain atmospheric measurements for research and operations. Some have proposed a 3D Mesonet
concept to add vertical profiling ...
Assessing scanning strategies with all-digital phased array weather radars for characterization and detection of microbursts
(2022-05-13)
Microbursts are a rapidly evolving, vertically oriented meteorological phenomena that can be extremely hazardous to aviation, and other human activities, if left undetected. The temporal resolution and vertical sampling ...
Assessment of stratospheric wave activity associated with the Madden-Julian Oscillation (MJO) and its potential impact on the Quasi-Biennial Oscillation (QBO)
(2021-12)
The Madden-Julian Oscillation (MJO) and Quasi-Biennial Oscillation (QBO) are known to provide sub-seasonal to seasonal predictability, yet their dynamics and interactions are not fully understood. Many recent studies have ...
Colorful Language: Investigating the Interpretation of the Storm Prediction Center's Convective Outlook by Broadcast Meteorologists and the US Public
(2020-07-30)
Though severe weather forecast products, such as the Storm Prediction Center (SPC) convective outlook, have shown to be significantly more accurate than climatology at day-to-week time scales, tornadoes and severe thunderstorms ...