A multidecadal simulation of Atlantic tropical cyclones using a variable-resolution global atmospheric general circulation model

Colin M. Zarzycki, Christiane Jablonowski
2014 Journal of Advances in Modeling Earth Systems  
CESM Workshop 6/17/2015 the globe. This eliminates issues that arise from the use of traditional latitude-longitude grids such as the convergence of meridians in polar regions which requires either extremely short time steps or polar filtering to satisfy numerical stability constraints. The accuracy of the model can be controlled by selecting the polynomial degree of the basis functions on each quadrilateral element. The default polynomial degree in CAM-SE is selected to be three (cubic
more » ... hree (cubic polynomials), leading to fourth-order spatial accuracy. We utilize a finitedifference approach in the vertical with a hybrid sigma-pressure coordinate, and a Runge-Kutta time discretization. Spectral elements are highly localized numerical discretizations and therefore require minimal communica-
doi:10.1002/2014ms000352 fatcat:unjwjorclrg2ho546sts46lf74