Abstract
Abstract The authors performed numerical simulations of the 27–28 May 1998 mesoscale convective vortex (MCV) and mesoscale convective system (MCS) to understand how the MCV modulated the convection, and how the convection intensified the vortex. The fifth-generation Pennsylvania State University–National Center for Atmospheric Research (PSU/NCAR) Mesoscale Model (MM5) was used, initialized with the analysis from the Rapid Update Cycle version 2 (RUC-2) and nested to achieve 1.5-km grid spacing covering the MCS. The model successfully simulated a north–south convective band that formed near the center of the MCV in the early evening. The simulation then correctly reoriented the convection along a roughly east–west line in response to northward transport of warm, conditionally unstable air within the nocturnal low-level jet. Balanced vertical motion was found to contribute substantially to mesoscale lifting and thermodynamic destabilization, which localized the convection. Horizontal transport of moist, uns...
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call