HR: 12:05h
AN: A11H-08    [PDF]
TI: Simulations of the July 16 and 21 CRYSTAL-FACE Cirrus Cases Using a Cloud-Resolving Model Forced by a Mesoscale Model
AU: * Carver, R W
EM: rwc141@psu.edu
AF: Department of Meteorology Pennsylvania State University, 503 Walker Building, University Park, PA 16802 United States
AU: Harrington, J
EM: harring@mail.meteo.psu.edu
AF: Department of Meteorology Pennsylvania State University, 503 Walker Building, University Park, PA 16802 United States
AU: Verlinde, J
EM: verlinde@essc.psu.edu
AF: Department of Meteorology Pennsylvania State University, 503 Walker Building, University Park, PA 16802 United States
AB: To understand what could influence the evolution and maintenance of tropical anvil cirrus, we present results from a paired mesoscale-cloud scale numerical modeling system. The mesoscale model is used to simulate the development of convection over southern FL during the CRYSTAL-FACE study days and to provide a guide as to how the atmosphere responds to the convection. Data from these model runs is then used to provide initial conditions and mesoscale forcing terms for a LES simulation of detached anvil. Results suggest that the amount of initial condensate present in the anvil simulation has a role in the maintenance and evolution of the cirrus layer comparable to the role played by the mesoscale forcing. Parcel studies and off-line microphysics models are used to describe the interplay between cloud microphysics, mesoscale dynamics, and cloud dynamics.
UR: http://www.meteo.psu.edu/~rcarver
DE: 3314 Convective processes
DE: 3329 Mesoscale meteorology
DE: 3337 Numerical modeling and data assimilation
DE: 3374 Tropical meteorology
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting