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Full-Text Articles in Meteorology
Spatial And Temporal Characteristics Of Polarimetric Tornadic Debris Signatures, Matthew S. Van Den Broeke, Sabrina T. Jauernic
Spatial And Temporal Characteristics Of Polarimetric Tornadic Debris Signatures, Matthew S. Van Den Broeke, Sabrina T. Jauernic
Department of Earth and Atmospheric Sciences: Faculty Publications
Nonmeteorological scatter, including debris lofted by tornadoes, may be detected using the polarimetric radar variables. For the 17 months from January 2012 to May 2013, radar data were examined for each tornado reported in the domain of an operational polarimetric Weather Surveillance Radar-1988 Doppler (WSR-88D). Characteristics of the tornadic debris signature (TDS) were recorded when a signature was present. Approximately 16% of all tornadoes reported in Storm Data were associated with a debris signature, and this proportion is shown to vary regionally. Signatures were more frequently seen with tornadoes that were rated higher on the enhanced Fujita (EF) scale, with …
Effects Of Mid- And Upper-Level Dry Layers On Microphysics Of Simulated Supercell Storms, Matthew S. Van Den Broeke
Effects Of Mid- And Upper-Level Dry Layers On Microphysics Of Simulated Supercell Storms, Matthew S. Van Den Broeke
Department of Earth and Atmospheric Sciences: Faculty Publications
Conceptual differences are presented among supercell storms simulated with midlevel and deep dry layers of varying magnitude. Initial patterns are identified which should be studied more comprehensively using observed or simulated data. These initial results indicate that mixing ratios of small ice particles are most sensitive to the depth of a dry layer rather than to its magnitude, with fewer particles in simulations containing a deep dry layer. Hail from frozen drops may be most abundant when a deep layer is dried, and bursts of hail species reaching low levels may be followed 15–20 min later by an increase in …