Search
Now showing items 121-130 of 145
Synoptic and Local Influences on a Summertime, Long-Lived, Mixed-Phase Cloud Event Over Summit, Greenland
(2016-08-12)
Long-lived, Arctic mixed-phase clouds play a crucial role in modulating the surface energy balance over the Greenland Ice Sheet. However, due to temporally and spatially inconsistent observations, little is known about the ...
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 ...
The Impact of Surface Heterogeneity on Surface Flux Estimates of the Stable Boundary Layer Using Single Column Modeling
(2022-08)
The surface fluxes of momentum and heat play an important role in the evolution of the atmospheric boundary layer (ABL). Accurate representation of the fluxes in weather and climate forecasting models, especially when ...
60°S-62°S Witnessed a Shift Pattern of Southern Ocean Boundary Layer Aerosols and CCN
(2021)
The Southern Ocean (SO), dominated by high surface wind speeds associated with frequent cyclones, is the most pristine environment on Earth, providing a natural laboratory to study the correlation of marine boundary layer ...
Global Large-Scale Stratosphere-Troposphere Exchange in Modern Reanalyses
(2016-08-12)
Stratosphere-troposphere exchange (STE) has important and signi cant impacts
on the chemical and radiative properties of the upper troposphere and lower stratosphere.
This study presents a 15-year climatology of global ...
Bridging the NASA Global Precipitation Measurement and Soil Moisture Active Passive Missions: Variability of Microwave Surface Emissivity from both In-situ and Remote Sensing Perspectives
(2016-08-12)
The overland precipitation retrievals from satellite passive microwave (PMW) radiometer such as the Global Precipitation Mission (GPM) microwave imager (GMI) suffer from the contamination of observed brightness temperatures ...
SEVERE HAIL DETECTION USING REMOTE SENSING OBSERVATIONS AND AN EVALUATION OF THE ABOVE ANVIL CIRRUS PLUME FOR SEVERE WEATHER DETECTION
(2018-12-14)
This thesis undergoes a comprehensive comparative analysis to address two main objectives: a) Thoroughly assess available radar, satellite, and lightning based products’ ability to identify hail events and size, and b) ...
A 20-Year Survey of Short-Duration Extreme Rainfall Events from Summertime Convection Over the Central and Eastern United States: Climatology, Trends, and Meteorological Patterns
(2023-12-15)
Short-duration extreme rainfall events (EREs) caused by convection are often associated with flash flooding, which can have devastating impacts on society. An increase in the frequency and intensity of EREs has been ...
Quantifying and Mitigating Debris-Induced Bias in Radar Measurements of Tornadic Winds
(2021)
The centrifuging of lofted tornadic debris is known to cause bias in Doppler radar measurements of tornado wind speeds. Debris presence in a radar volume is associated with anomalous radial divergence, underestimation of ...