Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"dual Doppler"”.
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Dual-Doppler Derived Vorticity as a Predictor of Hail Size in Severe Thunderstorms
… and size of hail. This study aims to use dual-Doppler observations as well as the MESH algorithm to test the idea that storms that rotate produce larger hail. Previous studies have used polarimetric radar products to detect the presence of large hail and dual-Doppler methods have been used …
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Comparison of positive and negative cloud-to-ground lightning dominant storms in three regions of the United States
… Kansas), central Oklahoma, and northern Alabama. Dual-polarization radar, lightning mapping array observations, and environmental reanalysis data were ingested by CLEAR to objectively assign lightning and environmental information to tracked storms. Comparison of environmental characteristics of …
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Determining Best Method For Estimating Observed Level Of Maximum Convective Detrainment Based On Radar Reflectivity
… (LMD) within convection using data from individual radars. Three methods were used to identify the LMD and validated against dual-Doppler derived vertical mass divergence fields. The best method for locating the LMD was determined to be the method that uses a horizontal reflectivity …
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Radar observations of misovortices within multiple long-lake-axis-parallel lake-effect bands during the OWLeS project
… conclusions. Our analyses, utilizing single-Doppler WSR-88D observations and dual-Doppler wind syntheses of mobile radar data reveal that most of the wind shifts within the LLAP bands were cyclonic, but that anticyclonic shear zones and misovortices also exist. It was found that anticyclonic …
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Observations of misovortices within the 7 January 2014 Long Lake-Axis-Parallel lake-effect snow band during the Ontario Winter Lake-effect Systems Project
… Project. With data from only a single mobile Doppler radar available, however, this hypothesis was not testable. In the present study, three-dimensional dual-Doppler (DD) wind syntheses reveal that two separate criteria for HSI are met along the low-level horizontal shear zone within this …
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Horizontal vorticity redistribution and vortex alignment in developing and mature tropical cyclones
… resolution wind fields derived from airborne dual-Doppler observations of Hurricane Olivia (1994). Seven consecutive composites of Olivia's wind field with 30-min time resolution depict a weakening storm undergoing substantial structural changes. The problem of vortex alignment (and the …
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Multi-scale interactions leading to tropical cyclogenesis in sheared environments
… data sources including observations such as dual-Doppler radar, dropsonde soundings, and satellite data for mesoscale case studies, reanalyses data for synoptic and climatological analysis, and extensive ensemble mesoscale modeling for controlled experiments. First, this dissertation presents …