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Title: A Nonhydrostatic Variable Resolution Atmospheric Model in ACME

Abstract

The Accelerated Climate Modeling for Energy (ACME) Project is designed to perform coupled climate simulations at high resolution on current and next generation DOE leadership class supercomputers. Prior to this project, the ACME atmospheric model employed the primitive equations of motion, which constrained its maximum resolution and limited the physical phenomena that it could resolve. Our team removed this constraint by implementing a non-hydrostatic (NH) atmospheric model in the ACME Framework. Collaboration with SciDAC FASTMath institutes facilitated improvements to key technologies needed for the non-hydrostatic model. This model was tested in a variable resolution framework, which enables high resolution simulation regions at reasonable computational costs. The correct performance of the NH model was verified with standard dynamical-core tests, and by demonstrating that it reproduced expected climate statistics in the hydrostatic regime. The completed model was applied to evaluate the limitations of existing turbulent mountain stress and gravity wave drag parameterizations, in order to demonstrate the power of the new nonhydrostatic model to model new phenomena and enhance the quality of present day 1/4 degree simulations.

Authors:
; ; ;
Publication Date:
Research Org.:
University of Colorado Boulder
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1509842
Report Number(s):
DOE-CUB-043019
3034929660
DOE Contract Number:  
SC0014449
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Hall, David Matthew, Taylor, Mark, Ullrich, P, and Woodward, C. A Nonhydrostatic Variable Resolution Atmospheric Model in ACME. United States: N. p., 2019. Web. doi:10.2172/1509842.
Hall, David Matthew, Taylor, Mark, Ullrich, P, & Woodward, C. A Nonhydrostatic Variable Resolution Atmospheric Model in ACME. United States. doi:10.2172/1509842.
Hall, David Matthew, Taylor, Mark, Ullrich, P, and Woodward, C. Mon . "A Nonhydrostatic Variable Resolution Atmospheric Model in ACME". United States. doi:10.2172/1509842. https://www.osti.gov/servlets/purl/1509842.
@article{osti_1509842,
title = {A Nonhydrostatic Variable Resolution Atmospheric Model in ACME},
author = {Hall, David Matthew and Taylor, Mark and Ullrich, P and Woodward, C},
abstractNote = {The Accelerated Climate Modeling for Energy (ACME) Project is designed to perform coupled climate simulations at high resolution on current and next generation DOE leadership class supercomputers. Prior to this project, the ACME atmospheric model employed the primitive equations of motion, which constrained its maximum resolution and limited the physical phenomena that it could resolve. Our team removed this constraint by implementing a non-hydrostatic (NH) atmospheric model in the ACME Framework. Collaboration with SciDAC FASTMath institutes facilitated improvements to key technologies needed for the non-hydrostatic model. This model was tested in a variable resolution framework, which enables high resolution simulation regions at reasonable computational costs. The correct performance of the NH model was verified with standard dynamical-core tests, and by demonstrating that it reproduced expected climate statistics in the hydrostatic regime. The completed model was applied to evaluate the limitations of existing turbulent mountain stress and gravity wave drag parameterizations, in order to demonstrate the power of the new nonhydrostatic model to model new phenomena and enhance the quality of present day 1/4 degree simulations.},
doi = {10.2172/1509842},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {4}
}