dorsal/arxiv
View SchemaElectrical Behavior of Downburst-Producing Convective Storms over the Western United States
| Authors | Kenneth Pryor |
|---|---|
| Categories | |
| ArXiv ID | physics/0603260 |
| URL | https://arxiv.org/abs/physics/0603260 |
Abstract
A great body of research literature pertaining to microburst generation in convective storms has focused on thermodynamic factors of the pre-convective environment as well as storm morphology as observed by radar imagery. Derived products based on GOES sounder data have been found to be especially useful in the study of thermodynamic environments. However, addressed much less frequently is the relationship between convective storm electrification, lightning phenomenology and downburst generation. Previous research in lightning production by convective storms has identified that electrification, phenomenology (i.e. flash rate, density), and polarity are dependent upon the thermodynamic structure of the ambient atmosphere, especially vertical moisture stratification. Thus, relevant parameters to describe the thermodynamic setting would include convective available potential energy (CAPE), due to its influence on updraft strength, and cloud liquid water content, due to its relationship to precipitation physical processes. It has already been addressed that buoyant energy and moisture stratification are important factors in convective storm development and downburst generation. This research effort investigates and derives a qualitative relationship between lightning phenomenology in convective storms and downburst generation. Downburst-producing convective storms will be analyzed by comparing pre-convective environments, as portrayed by GOES microburst products, storm morphology, as portrayed by radar imagery, and electrical behavior, as indicated by NLDN data.
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"abstract": "A great body of research literature pertaining to microburst generation in\nconvective storms has focused on thermodynamic factors of the pre-convective\nenvironment as well as storm morphology as observed by radar imagery. Derived\nproducts based on GOES sounder data have been found to be especially useful in\nthe study of thermodynamic environments. However, addressed much less\nfrequently is the relationship between convective storm electrification,\nlightning phenomenology and downburst generation. Previous research in\nlightning production by convective storms has identified that electrification,\nphenomenology (i.e. flash rate, density), and polarity are dependent upon the\nthermodynamic structure of the ambient atmosphere, especially vertical moisture\nstratification. Thus, relevant parameters to describe the thermodynamic setting\nwould include convective available potential energy (CAPE), due to its\ninfluence on updraft strength, and cloud liquid water content, due to its\nrelationship to precipitation physical processes. It has already been addressed\nthat buoyant energy and moisture stratification are important factors in\nconvective storm development and downburst generation. This research effort\ninvestigates and derives a qualitative relationship between lightning\nphenomenology in convective storms and downburst generation.\nDownburst-producing convective storms will be analyzed by comparing\npre-convective environments, as portrayed by GOES microburst products, storm\nmorphology, as portrayed by radar imagery, and electrical behavior, as\nindicated by NLDN data.",
"arxiv_id": "physics/0603260",
"authors": [
"Kenneth Pryor"
],
"categories": [
"physics.ao-ph"
],
"title": "Electrical Behavior of Downburst-Producing Convective Storms over the Western United States",
"url": "https://arxiv.org/abs/physics/0603260"
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