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Now showing items 31-40 of 143
An Analysis of the Microphysical and Thermodynamic Properties of Elevated Convective Cells within Snowbands Associated with Winter Storms.
(2023-12-15)
In-situ and remote sensing observations of snowbands were obtained by probes on a cloudpenetrating NASA P-3 and a high-altitude NASA ER-2 aircraft, to identify and characterize elevated convective cells (CCs). Observations ...
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 ...
Evaluating Boundary Layer Features in the CHEESEHEAD Campaign and Their Contribution to Convection Evolution During the 19-20 July 2019 Severe Weather Outbreak
(2022-08-04)
Interactions between the atmospheric boundary layer and convective storms provide an opportunity for research bridging the two meteorological fields. Despite this, there remains a pervasive sense within the meteorological ...
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 ...
Constraint of Vegetation Photosynthesis and Respiration Model (VPRM) Parameter Uncertainty Using a Markov Chain Monte Carlo (MCMC) Technique
(2023-05-12)
Modeling the changes to the carbon cycle and their effects on the atmosphere is a key area of research for understanding climate change. The Vegetation Photosynthesis and Respiration Model (VPRM) is a light-use efficiency ...
Impacts of Extratropical Transition on Tropical Cyclone Tornado Occurrence
(2023-08-04)
Tornadoes that spawn from tropical cyclones (TCs) pose a threat to lives and property. Although nearly half of TCs in the Atlantic Ocean undergo extratropical transition, there has only been one study investigating how ...
THE PACIFIC DECADAL PRECESSION AND ITS RELATIONSHIP TO TROPICAL PACIFIC DECADAL VARIABILITY IN CMIP6 MODELS
(2020-07-30)
Persistent, multi-year shifts in atmospheric circulations and their associated influence on regional climates can have profound impacts on physical, biological, and socioeconomic systems. The Pacific Decadal Precession ...
Flow Dependent Evaluation and Training of Random Forest based Probabilistic Forecasts of Severe Weather Hazards
(2023-12-15)
There has been an increasing interest over the past ten years in the use of Machine Learning (ML) algorithms such as Random Forests (RF) in the context of severe weather prediction. RF-based methods have even been shown ...
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 ...
Non-Terminal Hydrometeor Fall Speed Effects on Modeled Rain Processes
(2023-08-04)
Recent observational studies have shown hydrometeors exhibit non-terminal fall speeds. The goal of this study is to understand how these non-terminal fall speeds affect the collision, coalescence and breakup of raindrops ...