Browsing OU - Theses by Author "Wang, Xuguang"
Now showing items 21-26 of 26
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A Statistical Approach to Diagnosing Storm Mode
Stang, David (2021-12-17)Determining storm mode (linear or isolated) is a crucial component of any severe weather forecast. Isolated storms are associated with a greater likelihood of significant (EF2+) tornadoes and very large (2”+) hail, while ... -
Strengths and Limitations of NSSL's Experimental Warn-on-Forecast System for Ensembles in Forecasting Cyclic Mesocyclogenesis
Britt, Kelsey (2018-12-14)Cyclic mesocyclogenesis is the process by which a supercell produces multiple mesocyclones with similar life cycles. Supercells that exhibit cyclic mesocyclogenesis (i.e. cyclic supercells) have the potential to produce ... -
Supercell Predictability: Exploring Ensemble Sensitivity to Initial Condition Spread
Flora, Montgomery (2017-05-12)The sensitivity of full-physics ensemble forecasts of supercells to initial condition (IC) uncertainty is investigated. The motivation for the study largely stems from the NOAA Warn-on-Forecast (WoF) program, where the ... -
A Tale of Two Mesovortices: Analysis of a Simulated Severe MCS Observed By PECAN on 5-6 July 2015
Flournoy, Matthew (2017-07)Understanding and forecasting nocturnal thunderstorms and their hazards remain elusive goals. To this end, an expansive array of fixed and mobile observing systems were deployed in the summer of 2015 for the Plains Elevated ... -
A Two Part Study in the Evaluation of Quantitative Precipitation Forecasts from Convection-Allowing Models
Iyer, Eswar (2017-12)Previous studies examining convection-allowing models (CAMs), as well as NOAA/Hazardous Weather Testbed Spring Forecasting Experiments (SFEs) have typically emphasized “day 1” (12-36 h) forecast guidance. These studies ... -
Understanding and Predicting Nocturnal Convection Initiation using an Ensemble-based Multi-scale Data Assimilation System
Degelia, Samuel (2016-08-12)A nocturnal maximum in precipitation exists over the Great Plains during the summer. The initiation of nocturnal storms is notoriously difficult to forecast in numerical models due to the storms often involving interactions ...