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Forecaster Warning Decision Making with Rapidly-Updating Radar Data
(2017-12)
Phased-array radar is being considered as a potential future replacement technology for the current operational Weather Surveillance Radar 1988 Doppler system. One of the most notable differences in these weather radar ...
HYBRID EN3DVAR RADAR DATA ASSIMILATION AND COMPARISONS WITH 3DVAR AND ENKF WITH OSSES AND A REAL CASE
(2017-12)
Studies have shown advantages of the hybrid ensemble-variational data assimilation (DA) algorithms over pure ensemble or variational algorithms, although such advantages at the convective scale, in the presence of complex ...
Simulated effects of urban environments on the dynamics of a supercell thunderstorm
(2017-05)
The world's population is increasingly concentrated in large urban areas. Many observational and modeling studies have explored how large, population-dense cities modify local and mesoscale atmospheric phenomena. Urban ...
A Phenomenological Investigation of Voluntary Exits from the Atmospheric Science Occupation
(2017-05)
Data available from several atmospheric science (including meteorology) degree programs suggest that a sizable number of degree-holding atmospheric scientists may work outside of the atmospheric science occupation. In cases ...
MOISTURE SOURCES FOR FLASH FLOODS IN THE UNITED STATES
(2017-12)
This dissertation uses backward trajectories derived from North American Regional Reanalysis data for 19,253 flash flood reports published by the National Weather Service to assess the nonlocal contribution of the land ...
The Role of Surface Drag in Supercell Tornadogenesis and Mesocyclogenesis: Studies Based on Idealized Numerical Simulations
(2017-05)
Idealized numerical simulations of supercell thunderstorms have been employed for several decades to study tornadogenesis, providing valuable insights that have helped shape our current understanding of the process. Until ...
Analysis of environmental modifications by deep convection during the Mesoscale Predictability Experiment
(2017-05)
The Mesoscale Predictability Experiment (MPEX) conducted during the spring of 2013 included frequent coordinated sampling of near-storm environments via upsondes. These unique observations were taken to better understand ...
Theory and observations of bores in the nocturnal environment of the Great Plains
(2017-08-03)
Accurate representation of bores in forecast models is a challenge. This challenge is
of considerable interest to both the operational and the research communities because
bores are capable of producing vertical displacements ...
Polarimetric Measurements of Ice Pellets and Aggregated Snow
(2017-12-15)
The recent upgrade of the National Weather Service WSR-88D radar network to polarimetric capabilities provides the abundance of information about the precipitation microphysics. Even with the plethora of polarimetric ...
Deriving Operationally Relevant Tornado Probabilities from Convection-Allowing Ensembles
(2017-12)
Hourly maximum fields of simulated storm diagnostics from experimental versions of convection-allowing models (CAMs) provide valuable information regarding severe weather potential. The focus of this work is to extract ...