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Relationships Between Lidar Aerosol Extinction and Backscatter Coefficients with CCN Number Concentrations in the Southeast Atlantic
(2021-08-05)
Due to seasonal biomass burning and the presence of a semi-permanent stratocumulus deck off the western coast of Africa, the Southeast Atlantic (SEA) region is particularly important in terms of characterizing aerosol and ...
Impact of Microphysics Parameterization Schemes on the Assimilation of GOES-16 All-Sky Infrared Radiances for a Bow Echo Analysis and Prediction
(2023-08-04)
Assimilating infrared brightness temperature (BT) from the water vapor sensitive channels of the GOES-16 Advanced Baseline Imager (ABI) has been shown by past studies to improve the analysis and prediction of severe weather ...
Kinematics, Thermodynamics, and Microphysics of the 25-26 June 2015 Kansas MCS during PECAN
(2018-05)
This case study analyzes a nocturnal mesoscale convective system (MCS) that was observed in northeast Kansas as part of the Plains Elevated Convection at Night (PECAN) field experiment on 25-26 June 2015. Over the course ...
Potential Predictability and Impacts of Subseasonal Extreme Precipitation Events in the United States
(2020-12-18)
Prediction of climate extremes at the S2S time scale has become a large topic of conversation between researchers and decision makers. Long duration precipitation events, lasting 14-days, may lead to devastating impacts ...
Understanding the Features and Mechanisms of the Great Plains Low-Level Jet in CMIP5 Models
(2016-12)
The Great Plains low-level jet (GPLLJ) is an important driver of precipitation and severe weather outbreaks over the U.S. Great Plains during the spring and summer. Therefore, it is extremely important that features of the ...
Analysis of Tornadic Supercells Using Two Rapid-Scan, Mobile Doppler Radars
(2021-08)
Mobile Doppler radar is a critical tool in studying microscale phenomena, including tornadoes, in supercell thunderstorms at close-range. However, a relative dearth of high-quality cases documenting the tornadic life cycle ...
Analysis of Polarimetric Radar Downburst Precursors Using Automated Storm Identification and Tracking
(2023-12-15)
Strong thunderstorm winds produced by downbursts pose a threat to life, property, and aviation, yet they remain challenging to predict in advance. Current operational understanding of radar-based downburst precursors ...
A Comparison of Hybrid-4DEnVar and Hourly Hybrid-3DEnVar Assimilation of Tail Doppler Radar Observations on the Prediction of Rapidly Evolving Hurricanes
(2019-08-01)
Beginning in the summer of 2017 the National Weather Service upgraded the operational Hurricane WRF (HWRF) to a continuously cycled Gridpoint Statistical Interpolation (GSI) based, 6-hourly, Hybrid 3-dimensional (3D) ...
South Pacific Atmospheric Internal Variability and Its Role in El Niño-Southern Oscillation
(2018)
Accurate long-range seasonal prediction of the El Niño-Southern Oscillation (ENSO) phenomenon is of critical importance to predict regional and global climate anomalies. The overarching goal of this work is to seek the ...
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 ...