Search
Now showing items 1-10 of 143
Assessing the impact of non-conventional observation types on high-resolution 3DVAR analyses and ARW-WRF forecasts
(2016-12)
This work looks at the impact on high-resolution analyses and forecasts of several non-conventional data types available within the Dallas Fort Worth (DFW) Urban Testbed. A major focus is an evaluation of the added value ...
A 16-Year Observational Analysis of Land-Atmosphere Coupling in Oklahoma Using Mesonet and North American Regional Reanalysis Data
(2018-08)
Global “hot spots” for land atmosphere coupling have been identified through various studies. One particular region that has been identified in many of these global studies is the Southern Great Plains (SGP) of North ...
Verification of 10-Meter Wind Forecasts from NSSL-WRF in Predicting Severe Wind-Producing MCSs
(2016-12-16)
Predicting convective winds associated with mesoscale convective systems (MCSs) remains a major challenge for operational severe weather forecasters. To assess the performance of the Weather Research and Forecasting Model ...
A Microphysical Analysis of the Stratiform Rain Region of Mesoscale Convective Systems using Polarimetric Radar and In Situ Aircraft Measurements
(2018-12-14)
The benefits of using polarimetric weather radar data to infer microphysical properties of and processes within observed precipitation is becoming more widely recognized. The quasi-vertical profile (QVP) technique has ...
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 ...