Search
Now showing items 71-80 of 80
Assimilation of radar and surface observations of a developing convective system: Observing system simulation and real-data experiments
(2013-12)
Convective-scale observing system simulation experiments (OSSEs) and real-data experiments were performed to study the impact of radar and surface observations on analyses and forecasts of convective systems using the ...
Observations and Simulations of Polarimetric, X-Band Radar Signatures in Supercells
(2013)
Polarimetric weather radars, with the additional information collected, allow one to infer scatterer and precipitation properties considerably more easily than single-polarization radars. Given the relationship between the ...
Assimilation of CASA and WSR-88D Radar Data for Tornadic Convective Storms using an Ensemble Kalman Filter and Applications in Probabilistic Ensemble Forecasting
(2011)
Two sets of experiments are performed to examine the ability of a storm-scale numerical weather prediction (NWP) model to predict precipitation and meso-vortices within the tornadic mesoscale convective system (MCS) that ...
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 ...
Interactions Between Coherent Structures and the Urban Canopy Layer
(2014-12-12)
The focus of this dissertation research is to gain further insight into the interaction of coherent structures and the urban canopy layer (CS-UCL interactions). There is a growing body of evidence that suggests that periods ...
A method for calibrating probabilistic forecasts
(2013)
One aim of the Warn-on-Forecast initiative is to transform the warning paradigm of rare convective events (RCEs) from warn-on-detection to one where RCE warnings are informed by short-term, high resolution numerical forecasts ...
Observations of Evolving Lightning, Microphysics, and Kinematics for a Supercell, a Multicell, and a Mesoscale Convective System
(2019)
The Deep Convective Clouds and Chemistry (DC3) field experiment collected data on a variety of storms to investigate the relationships between lightning and other storm processes. This study focuses on the relationships ...
Identification of Enhanced Rainfall Rates Using the Near-Storm Environment for Radar Precipitation Estimates
(2012)
Reliable and timely flash flood warnings are critically dependent on the accuracy of real-time rainfall estimates. Precipitation is not only the most vital input for basin-scale accumulation algorithms such as the Flash ...
The Impact of El Nino Southern Oscillation on the Climatology of U.S. Winter and Early Spring Tornado Outbreaks
(2014-12-12)
In recent years, the notion of a potential seasonal tornado outbreak prediction scheme has garnered the attention of several researchers. The studies that have arisen on this topic have focused mainly on the influence of ...
A HIGH RESOLUTION DISTRIBUTED HYDROLOGIC MODEL CLIMATOLOGY OVER THE CONTERMINOUS UNITED STATES FOCUSED ON FLASH FLOODING
(2016-08-12)
This study will describe the MRMS reanalysis precipitation dataset created for the time period from 2001 to 2011. This high resolution 1-km^2 5-minute dataset is ideal for simulating flash floods with a distributed hydrologic ...