Search
Now showing items 131-140 of 145
Ice Crystal Size Distributions in Tropical Mesoscale Convective Systems in the Vicinity of Darwin, Australia: Results from the HAIC/HIWC Campaign
(2021-12)
Total ice water content (IWC) derived from an isokinetic evaporator probe and ice crystal size distributions measured by a two-dimensional stereo probe and precipitation imaging probe installed on the French Falcon aircraft ...
Radar analysis of the physics of extreme rainfall events
(2020)
Extreme precipitation events pose a threat to life, property, and economic growth throughout the United States and across the world. Although extensive research has focused on improving understanding of extreme precipitation ...
Structure of tropopause polar vortices represented from the atmospheric profiles of satellite observations
(2022-12-16)
Tropopause polar vortices (TPVs) are sub-synoptic tropopause disturbances commonly found poleward of the polar jet stream. Their roles in cyclogenesis and linkages to mid-latitude weather make them relevant to the improvement ...
Evolution of the Structure and Dynamics of the Nocturnal Low-Level Jet after the Passage of a Cold Front and Insights into the Initiation and Maintenance of Nocturnal Convection
(2021)
Nocturnal low-level jets (NLLJs) are commonly observed over the Southern Great Plains (SGP) and have been linked to occurrence of the nocturnal maximum in mesoscale convective systems over this region during the late spring ...
Impact of Assimilating Ground-Based and Airborne Radar Observations for the Analysis and Prediction of the Eyewall Replacement Cycle of Hurricane Matthew (2016) Using HWRF Hybrid 3DEnVar System
(2021-08-05)
Eyewall replacement cycles (ERC) are common dynamical processes in mature tropical cyclones (TCs) that can result in quick changes to the storm’s intensity and wind field size. As the resolution of TC models increases, ...
Characteristics and Lifecycles of Anticyclonic Tropopause Polar Vortices
(2023-05-12)
Tropopause polar vortices (TPVs) are sub-synoptic, long-lived, closed circulation features located in the upper-troposphere and lower-stratosphere region. Although TPV circulations can be cyclonic or anticyclonic, most ...
Using Radiosonde Observations to Assess The 'Three-Ingredients' Method to Forecast QLCS Mesovortices
(2022-08)
Quasi-linear convective system (QLCS) mesovortices have a propensity to produce impactful severe weather outcomes, including tornadoes and enhanced straight-line wind damage. Despite advances in understanding the origins ...
Impact of data assimilation and model physics on the predictability of the 2012 Great Arctic Cyclone
(2022-08-04)
Impact of data assimilation and model physics on the predictability of the 2012 Great Arctic Cyclone
A case study of the Great Arctic Cyclone 2012 (AC12) is used to understand the role of initial condition errors and model ...
Evolution of the Tornado and Near-Tornado Wind Field of the Selden, Kansas Tornadic Supercell on 24 May 2021 Using a Rapid-Scan, X-Band, Mobile, Doppler Radar
(2023-05-12)
On 24 May 2021, a supercell in Selden, KS produced tornadoes which were probed by RaXPol, the University of Oklahoma’s rapid-scan, mobile, X-band, polarimetric Doppler radar. According to the National Weather Service, the ...
An Investigation Between Tornadic and Non-Tornadic QLCS Mesovortices using Operational and Experimental MRMS Products
(2023-08-04)
Quasi-linear convective system (QLCS) tornadoes have become an active area of research over the last several years. Through numerical simulations, it is theorized that QLCS vortex formation occurs near the surface in a ...