Comparisons among second-order, fourth-order, and pseudospectral advection techniques in a mesoscale numerical modelThe reported investigation is concerned with mesoscale squall-line simulation utilizing numerical techniques. Particular attention is given to fourth-order results and their implications for the dynamical evolution of mesoscale squall-line systems which contain severe local storms. An adiabatic inviscid set of prognostic equations is utilized in a z coordinate system for the fundamental experiment. The fourth-order advection is employed for all time-dependent equations. The Euler-backward time marching scheme is utilized with a 60 second time step. The horizontal mesh length is 42 km. Horizontal diffusion is accomplished by utilizing a smoother-desmoother. Lateral boundary conditions are designed to reduce the development of strong gradients in dependent variables near the boundaries by bringing interior values from the grid to the boundaries.
Document ID
19780064888
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Kaplan, M. (NASA Langley Research Center Hampton, VA, United States)
Gooden, A. (NASA Langley Research Center Hampton, VA, United States)
Turner, R. (NASA Langley Research Center Hampton, VA, United States)
Wong, Y. (NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: Conference on Numerical Weather Prediction