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Showing 1 to 6 of 6 for “"Profiling of Winter Storms (PLOWS)"”.
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Investigation of the comma-head stability structure of wintertime mid-latitude cyclones using high-resolution observations
The Profiling of Winter Storms (PLOWS) field campaign sampled twenty-four winter cyclones over the course of the 2008-2009 and 2009-2010 winter seasons. The goal of this field campaign was to investigate the distribution of instability that leads to precipitation substructures found in the …
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A comparison of X-band polarization parameters with in-situ microphysical measurements in the comma head of two winter cyclones
Since the advent of dual-polarization radar, methods of classifying hydrometeors by type from measured polarization variables have been developed. However, the deterministic approach of existing hydrometeor classification algorithms of assigning only one dominant habit to each volume does not …
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Electric charging in the comma-head regions of continental winter cyclones
Lightning in the comma-head region of winter cyclones is a relatively rare phenomenon. The nature of the electric charging in wintertime precipitation bands is unknown. During the ProfiLing Of Winter Storms (PLOWS) project, the surface electric field was measured using an electric field mill (EFM) …
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Dynamics of cloud-top generating cells in winter cyclones
… in the warm-frontal and comma-head regions of midlatitude winter cyclones. The presence of fall streaks emanating from the GCs, and their persistence either to the surface or until merging into precipitation bands suggests that GCs are a critical component of the precipitation process in …
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Exploring methods to extract vertical motions in winter storms
Methods of retrieving vertical motions in wintertime cyclones are tested for the 915 MHz profiler, a profiling radar on the University of Alabama-Huntsville Mobile Integrated Profiling System, used during several winter cyclones observed during the Profiling of Winter Storms (PLOWS) project. First, …
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Structure and statistical analysis of the microphysical properties of the comma-head region of cold-season midlatitude cyclones
This dissertation presents analyses of the microphysical structure and processes producing precipitation in the comma-head region of cold-season continental cyclones, using data collected by the W-band Wyoming Cloud Radar and in-situ instrumentation aboard the NSF/NCAR C-130 research aircraft …