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Doppler Radar Analyses of Tornadic Supercells on 19 May 2013
(2016-05-13)
On 19 May 2013, two supercells moved through central Oklahoma and produced seven tornadoes, including one of EF-3 and one of EF-4 intensity. High temporal and spatial resolution observations were collected in both strong ...
Rapid-scan, polarimetric, mobile, Doppler-radar observations of the formation, evolution, and structure of the El Reno tornado of 31 May 2013
(2016-10)
On 31 May 2013, the mobile, Rapid-scan, X-band, Polarimetric (RaXPol) radar collected a high spatial and temporal resolution dataset documenting the genesis, intensification, and dissipation of a tornado that caused EF-3 ...
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 ...
ANALYSIS OF FLOW AND THERMODYNAMIC CHARACTERISTICS AT A SITE IN COMPLEX TERRAIN
(2018-08)
The goal of the Perdigão Field Experiment was to study atmospheric flows in complex terrain and to collect a high-quality dataset for the validation of meso- and micro-scale models. An Intensive Observation Period (IOP) ...
The Response of a Long-lived Mesoscale Convective System to Changes in Lower-Tropospheric Conditions
(2017-05)
Most continental regions experience an afternoon or evening maximum of convective activity, which is dominated by convection driven by surface heating. However, the Great Plains of North America experiences a nocturnal ...
An Evaluation of Radar- and Satellite-Data Based Products to Discriminate Between Tornadic and Non-Tornadic Storms
(2017-12)
Severe weather, and specifically tornadoes, can pose a significant threat to property and human life. Tornadic storms have been extensively studied using radar observations for decades, and some more recent studies have ...
Characteristics of the 2011-2016 California Drought
(2017-05-13)
The recent California drought persisted for five years from 2011-2016 and was the worst drought in recent memory. Previous studies have established that this drought was marked by low but not unprecedented rainfall coupled ...
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 ...