A Petascale Non-Hydrostatic Atmospheric Dynamical Core in the HOMME Framework

Tufo, Henry¹ 

[1] Univ. of Colorado, Boulder, CO (United States)

关键词: Dynamical Core;    Non-Hydrostatic;    High Order Methods;    Parallel Computing;    Scalable Methods;    Exascale;   

DOI  :  10.2172/1241514
RP-ID  :  DOE-CU_SC0006959
PID  :  OSTI ID: 1241514

学科分类：地球科学(综合)

美国|英语

来源: SciTech Connect

【 摘 要 】

The High-Order Method Modeling Environment (HOMME) is a framework for building scalable, conserva- tive atmospheric models for climate simulation and general atmospheric-modeling applications. Its spatial discretizations are based on Spectral-Element (SE) and Discontinuous Galerkin (DG) methods. These are local methods employing high-order accurate spectral basis-functions that have been shown to perform well on massively parallel supercomputers at any resolution and scale particularly well at high resolutions. HOMME provides the framework upon which the CAM-SE community atmosphere model dynamical-core is constructed. In its current incarnation, CAM-SE employs the hydrostatic primitive-equations (PE) of motion, which limits its resolution to simulations coarser than 0.1 per grid cell. The primary objective of this project is to remove this resolution limitation by providing HOMME with the capabilities needed to build nonhydrostatic models that solve the compressible Euler/Navier-Stokes equations.