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A 16-Year Observational Analysis of Land-Atmosphere Coupling in Oklahoma Using Mesonet and North American Regional Reanalysis Data
(2018-08)
Global “hot spots” for land atmosphere coupling have been identified through various studies. One particular region that has been identified in many of these global studies is the Southern Great Plains (SGP) of North ...
A Microphysical Analysis of the Stratiform Rain Region of Mesoscale Convective Systems using Polarimetric Radar and In Situ Aircraft Measurements
(2018-12-14)
The benefits of using polarimetric weather radar data to infer microphysical properties of and processes within observed precipitation is becoming more widely recognized. The quasi-vertical profile (QVP) technique has ...
Correcting, Improving, and Verifying Automated Guidance in a New Warning Paradigm
(2018-05-11)
The prototype Probabilistic Hazards Information (PHI) system allows forecasters to experimentally issue dynamically evolving severe weather warning and advisory products in a testbed environment, providing hypothetical end ...
ATMOSPHERIC VARIATIONS IN COLUMN INTEGRATED CO2 ON SYNOPTIC AND SEASONAL TIME SCALE OVER THE U.S.
(2018)
Past studies have demonstrated that synoptic events play an important role in the spatial and temporal variations of carbon dioxide (CO2). In this study, in order to investigate whether cold fronts have impact on synoptic ...
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) ...
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 ...
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 ...
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 ...
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, ...
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 ...