Imported and Storm-Generated Near-Ground Vertical Vorticity in a Simulated Supercell
The authors use a high-resolution supercell simulation to investigate the source of near-ground vertical vorticity by decomposing the vorticity vector into barotropic and nonbarotropic parts. This way, the roles of ambient and storm-generated vorticity can be isolated. A new Lagrangian technique is...
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| Veröffentlicht in: | Journal of the atmospheric sciences 2014-08, Vol.71 (8), p.3027-3051 |
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| container_title | Journal of the atmospheric sciences |
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| creator | Dahl, Johannes M L Parker, Matthew D Wicker, Louis J |
| description | The authors use a high-resolution supercell simulation to investigate the source of near-ground vertical vorticity by decomposing the vorticity vector into barotropic and nonbarotropic parts. This way, the roles of ambient and storm-generated vorticity can be isolated. A new Lagrangian technique is employed in which material fluid volume elements are tracked to analyze the rearrangement of ambient vortex-line segments. This contribution is interpreted as barotropic vorticity. The storm-generated vorticity is treated as the residual between the known total vorticity and the barotropic vorticity. |
| doi_str_mv | 10.1175/JAS-D-13-0123.1 |
| format | Article |
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This way, the roles of ambient and storm-generated vorticity can be isolated. A new Lagrangian technique is employed in which material fluid volume elements are tracked to analyze the rearrangement of ambient vortex-line segments. This contribution is interpreted as barotropic vorticity. The storm-generated vorticity is treated as the residual between the known total vorticity and the barotropic vorticity.</abstract><cop>Boston</cop><pub>American Meteorological Society</pub><doi>10.1175/JAS-D-13-0123.1</doi><tpages>25</tpages><oa>free_for_read</oa></addata></record> |
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| source | American Meteorological Society; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Barotropic mode Downdraft Fluid dynamics Fluid flow Fluids Mathematical analysis Meteorology Outflow Physics Rivers Segments Simulation Storms Thunderstorms Tornadoes Trajectory analysis Vectors (mathematics) Vertical vorticity Vortices Vorticity Water outflow Wind shear |
| title | Imported and Storm-Generated Near-Ground Vertical Vorticity in a Simulated Supercell |
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