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Quantifying Precipitation Efficiency and Drivers of Excessive Precipitation in Post-Landfall Hurricane Harvey
(2019)
Hurricane Harvey produced widespread rainfall amounts over 1000 mm in portions of Southeast Texas, including Houston from 26-31 August 2017. The highly efficient and prolonged warm rain processes associated with Harvey ...
In-Situ Measurements and Remotely Sensed Estimations of Surface Fluxes over the Southern Great Plains of the United States
(2016-12)
Evapotranspiration (ET) is an important variable in the hydrologic cycle. As such, improved understanding of the spatial and temporal variability of ET is critical to weather and climate analysis and prediction, water ...
Atmospheric Conditions Preceeding Very Rapid Sea Ice Loss Events
(2019)
Even though the observed amplified warming trend in the Arctic region is well-established in theory through climate feedbacks and reproduced in global climate model projections, the same global climate models underestimate ...
Strengths and Limitations of NSSL's Experimental Warn-on-Forecast System for Ensembles in Forecasting Cyclic Mesocyclogenesis
(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 ...
Large Scale and Local Influences on the Occurrence and Maintenance of Liquid Bearing Clouds over the Greenland Ice Sheet
(2016)
Arctic liquid bearing clouds (LBCs) have a large impact on the surface radiation and cryospheric mass budgets. Their effect on the surface radiation budget is a combination of two competing processes. First, they can ...
Evaluation of the Madden-Julian Oscillation and the Stratospheric Polar Vortex and Their Joint Influence on the Northern Hemisphere Extratropical Circulation
(2018-12)
Multiple modes of climate variability inform long-range Northern Hemisphere (NH) winter weather prediction through their interactions with the atmosphere. Two specific modes of variability that are the focus of this study ...
Observations of Cold Front Features at High Spatiotemporal Resolution Using the Atmospheric Imaging Radar
(2016-08-12)
Over the past 40+ years, cold front vertical structure has been studied for the
purpose of increased understanding of convection initiation and aviation safety. Traditional
scanning radars tend to not be well-suited for ...
Characteristics of Tropopause Polar Vortices Based on Observations Over The Greenland Ice Sheet
(2018-12-14)
Tropopause Polar Vortices (TPVs) are long-lived, coherent vortices that are identified by closed material contours of potential temperature on the dynamic tropopause. They are characterized by PV anomalies that spend most ...
Understanding and Predicting Nocturnal Convection Initiation using an Ensemble-based Multi-scale Data Assimilation System
(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 ...
Inferring Bulk Microphysical Characteristics of Mesoscale Convective Systems Using Polarimetric Radar Observations
(2017)
In 2013, the network of NEXRAD WSR-88D’s were upgraded to dual-polarization. Dual-polarization allows for the identification of particle shape, size, orientation, and concentration within a radar sample volume due to the ...