P 3 . 2 Objective Environmental Analyses and Convective Modes for U . S . Tropical Cyclone Tornadoes from 2003 - 2008
نویسندگان
چکیده
Tropical cyclone (TC) tornado prediction remains a substantial challenge, both on its own and compared to advances made in prognostically relevant understanding of midlatitude supercells in particular. An ingredients-based approach (e.g., Johns and Doswell 1992), used for supercell tornado environments in midlatitudes, likewise can be applied to TCs, focusing on moisture, instability, vertical shear and lift for that majority of TC tornado situations resulting from supercells. Being rich in low level moisture, the main factors influencing the occurrence of supercell tornadoes in TCs are the relative distribution and overlap of shear, instability (as indicated by buoyancy) and various forms of convective bands and boundaries as foci for convection.
منابع مشابه
Convective Modes for Significant Severe Thunderstorms in the Contiguous United States. Part III: Tropical Cyclone Tornadoes
A gridded, hourly, three-dimensional environmental mesoanalysis database at the Storm Prediction Center (SPC), based on objectively analyzed surface observations blended with the Rapid Update Cycle (RUC) model-analysis fields and described in Parts I and II of this series, is applied to a 2003–11 subset of the SPC tropical cyclone (TC) tornado records. Distributions of environmental convective ...
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