Abstract: The existence of the Saharan air layer (SAL), a layer of warm, dry, dusty air frequently present over the tropical Atlantic Ocean, has long been appreciated. The nature of its impacts on hurricanes remains unclear, with ...

Abstract: The fifth-generation Pennsylvania State University?National Center for Atmospheric Research (PSU?NCAR) Mesoscale Model (MM5) is used to simulate Hurricane Bonnie at high resolution (2-km spacing) in order to examine budgets ...

Abstract: A numerical simulation of Hurricane Bob (1991) is conducted using the Pennsylvania State University?National Center for Atmospheric Research fifth-generation Mesoscale Model (MM5) with a horizontal grid spacing of 1.3 km ...

Abstract: A high-resolution numerical simulation of Hurricane Erin (2001) is used to examine the organization of vertical motion in the eyewall and how that organization responds to a large and rapid increase in the environmental ...

Abstract: The influence of uniform large-scale flow, the beta effect, and vertical shear of the environmental flow on hurricane intensity is investigated in the context of the induced convective or potential vorticity asymmetries ...

Abstract: The water and heat budgets for a midlatitude squall line are estimated from single- and dual-Doppler-radar data and thermodynamic data from rawinsonde and thermodynamic retrieval (from dual-Doppler winds). These data, along ...

Abstract: Mesoscale analysis of surface observations and mesoscale modeling results show that the 10?11 June squall line, contrary to prior studies, did not form entirely ahead of a cold front. The primary environmental features ...

Abstract: The fifth-generation Pennsylvania State University?National Center for Atmospheric Research Mesoscale Model is used to simulate Hurricane Bob (1991) using grids nested to high resolution (4 km). Tests are conducted to ...