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Relationships Between the Circulation and Eastward Propagation of the Madden-Julian Oscillation
(2020-12)
The Madden-Julian Oscillation (MJO) is the dominant mode of intraseasonal variability in the tropics and represents a major connection between global weather and climate. Successful prediction of the phenomenon has proved ...
Modeling CCN Effects on Electrification within High and Low Precipitation Supercells
(2021-08)
Cloud condensation nuclei (CCN) are known to affect both the electrical and the dynamic evolution of storms, but the effects on storm electrification in different storm modes have not been thoroughly examined. We will ...
The effects of urban geometry on point source scalar plume statistics: a large eddy simulation study
(2020-12)
Urban population currently forms the largest percentage of total human population in recorded history. The United Nations reported that 54% of people lived in urban environments in 2015, which is slated to increase to 68% ...
The Seasonality of Madden-Julian Oscillation (MJO) Teleconnections
(2023-08-04)
The Madden Julian Oscillation (MJO) is a tropical intraseasonal phenomenon that is known to generate teleconnections like the Pacific North American and the North Atlantic Oscillation patterns in boreal winter, but knowledge ...
A Comparative Convective Study Between the Ensemble Kalman Filter and the Local Particle Filter Using the Gridpoint Statistical Interpolation System
(2020-07-30)
The localized particle filter (LPF) is a recent advance in ensemble data assimilation for numerical weather prediction. Derived from the original particle filter used for highly nonlinear state variables, the LPF incorporates ...
GOES-16 GLM and ABI characteristics of severe and convective storms.
(2020-07)
The recent deployment of the Geostationary Lightning Mapper (GLM) on board the GOES-R series of satellites provides a new perspective of total lightning production for the severe convective storms research and operational ...
Meteorological Benefits of Dual-Polarization, Rapid-Scanning Radar Systems on Hail Producing Storms
(2022-08-04)
Hailstorms continue to be one of the leading economic natural hazards in the United States, amounting to ten billion dollars in damage, on average, annually. Radar tech- nology is one of the best means of detecting hailstorms, ...
A Statistical Approach to Diagnosing Storm Mode
(2021-12-17)
Determining storm mode (linear or isolated) is a crucial component of any severe weather forecast. Isolated storms are associated with a greater likelihood of significant (EF2+) tornadoes and very large (2”+) hail, while ...
Evolution of Biomass Burning Aerosol Properties During Transport in the Southeast Atlantic Region
(2023-05-12)
Biomass burning (BB) is a major source of absorbing aerosols globally and accounts for about 40% of black carbon in the atmosphere. The Southern African region contributes approximately 35% of the planet’s BB aerosol ...
TEST OF DIFFERENT TRANSFORMATION FUNCTIONS TO HYDROMETEOR AND WATER VAPOR MIXING RATIOS FOR DIRECT VARIATIONAL ASSIMILATION OF RADAR REFLECTIVITY DATA
(2021-05-14)
Many issues exist when using highly nonlinear radar reflectivity forward observation operator in three-dimensional variational data assimilation methods (3DVAR), especially with hydrometeor mixing ratios as control variables ...