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Using Machine Learning Applications and HREFv2 to Enhance Hail Prediction for Operations
(2019-08)
In this thesis, I demonstrate how hail prediction can be improved through post-processing numerical weather prediction (NWP) data from the new High-Resolution Ensemble Forecast system version 2 (HREFv2) with machine learning ...
Carbon-Based Pollutant Analysis and Remote Sensor Validation Using Column-Observing Fourier Transform Infrared (FTIR) Spectrometers During the TRACER Campaign
(2023-08-04)
Greenhouse gases methane (CH4), and carbon dioxide (CO2), along with carbon monoxide (CO), while produced by both anthropogenic and natural sources, all contribute to atmospheric warming. Additionally, CO poses health risks ...
SIMULTANEOUS ASSIMILATION OF RADAR AND SATELLITE DATA FOR CONVECTIVE SCALE NWP USING HYBRID ENSEMBLE VARIATIONAL DATA ASSIMILATION APPROACH
(2017)
Recently, an ensemble of the three-dimensional variational data assimilation (En3DA) system has been developed based on Advanced Regional Prediction System (ARPS) three-dimensional variational (3DVar) data assimilation ...
Exploring Tornado Debris Signature Hypotheses Using Radar Simulations and Large-Eddy Simulations
(2021)
Tornadoes can loft various types and sizes of debris, sometimes resulting in a polarimetric radar signature called the TDS (Tornado Debris Signature). The presence of a TDS in the radar data can help confirm the occurrence ...
Boundary Layer Profiling Using Rotary-Wing Unmanned Aircraft Systems: Filling the Atmospheric Data Gap
(2018-08)
The planetary boundary layer (PBL) is comprised of energy exchanges with the Earth’s surface, and as such plays a large factor in the evolution of weather con- ditions. However, traditional methods of observing the atmosphere, ...
Assessing the Impact of Non-Conventional Observations on High-Resolution Analyses and Forecasts
(2017-05)
A key recommendation of a 2009 report by the National Research Council (NRC) was for new mesoscale networks to be integrated with existing ones to form a nationwide “network of networks”. This recommendation originated ...
Environmental Conditions Producing Thunderstorms with Anomalous Vertical Polarity of Charge Structure
(2018-05)
Electric field soundings and Lightning Mapping Arrays have confirmed the existence of thunderstorms with vertical charge structure that is inverted from the usual polarity. This inverted charge structure can be described ...
Tornado proximity soundings from the NCEP/NCAR reanalysis data
(2002)
Thermodynamic soundings have been constructed from the reanalysis dataset produced by the National Centers for Environmental Prediction (NCEP) and the National Center for Atmospheric Research (NCAR). This was done to expand ...
Relationships Between the Circulation and Eastward Propagation of the Madden-Julian Oscillation
(2020-12)
The Madden-Julian Oscillation (MJO) is the dominant mode of intraseasonal variability in the tropics and represents a major connection between global weather and climate. Successful prediction of the phenomenon has proved ...
Modeling CCN Effects on Electrification within High and Low Precipitation Supercells
(2021-08)
Cloud condensation nuclei (CCN) are known to affect both the electrical and the dynamic evolution of storms, but the effects on storm electrification in different storm modes have not been thoroughly examined. We will ...