Improved Transport Processes for CCSM

Tufo, Henry

University of Colorado

关键词: Transport;    99 General And Miscellaneous//Mathematics, Computing, And Information Science;    Computers;    Geometry;    Supercomputers;   

DOI  :  10.2172/1012795
RP-ID  :  DOE/04ER63870- Final Report
RP-ID  :  FG02-04ER63870
RP-ID  :  1012795

美国|英语

来源: UNT Digital Library

【 摘 要 】

In atmospheric modeling, global spectral methods have dominated weather and climate simulation for the past two decades. However, global methods based upon the spherical harmonic basis functions require expensive non-local communication and thus have difficulty in exploiting the full potential of current high-performance parallel computers. The primary objective of HOMME ((11)) is the development of a class of high-order scalable conservative atmospheric models for climate and general atmospheric modeling applications. The spatial discretizations are based on continuous Galerkin (spectral element method) and discontinuous Galerkin (DG). These are local methods based on high-order accurate spectral basis functions which have been shown to perform well on massively parallel supercomputers at any resolution (18). HOMME employs a cubed-sphere geometry (26) exhibiting none of the singularities present in conventional latitude-longitude spherical geometries. The element based formulation enables the use of general curvilinear geometries and adaptive conforming or non-conforming meshes.