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

Technical Report · Tue Sep 15 04:00:00 EDT 2015

DOI:https://doi.org/10.2172/1241514· OSTI ID:1241514

Tufo, Henry ^[1]

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1. Univ. of Colorado, Boulder, CO (United States); University of Colorado

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.

• Research Organization: University of Colorado, Boulder, CO (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
• DOE Contract Number: SC0006959
• OSTI ID: 1241514
• Report Number(s): DOE-CU_SC0006959
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
Dynamical Core
Exascale
High Order Methods
Parallel Computing
Non-Hydrostatic
Scalable Methods