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Title: Progress in fast, accurate multi-scale climate simulations

Abstract

We present a survey of physical and computational techniques that have the potential to contribute to the next generation of high-fidelity, multi-scale climate simulations. Examples of the climate science problems that can be investigated with more depth with these computational improvements include the capture of remote forcings of localized hydrological extreme events, an accurate representation of cloud features over a range of spatial and temporal scales, and parallel, large ensembles of simulations to more effectively explore model sensitivities and uncertainties. Numerical techniques, such as adaptive mesh refinement, implicit time integration, and separate treatment of fast physical time scales are enabling improved accuracy and fidelity in simulation of dynamics and allowing more complete representations of climate features at the global scale. At the same time, partnerships with computer science teams have focused on taking advantage of evolving computer architectures such as many-core processors and GPUs. As a result, approaches which were previously considered prohibitively costly have become both more efficient and scalable. In combination, progress in these three critical areas is poised to transform climate modeling in the coming decades. These topics have been presented within a workshop titled, "Numerical and Computational Developments to Advance Multiscale Earth System Models (MSESM'15)," asmore » part of the International Conference on Computational Sciences, Reykjavik, Iceland, June 1-3, 2015.« less

Authors:
 [1];  [1];  [2];  [3];  [3]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
OSTI Identifier:
1201557
Alternate Identifier(s):
OSTI ID: 1512093
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Procedia Computer Science
Additional Journal Information:
Journal Volume: 51; Journal Issue: C; Journal ID: ISSN 1877-0509
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; 54 ENVIRONMENTAL SCIENCES; earth system models; multi-scale climate; time integration; many-core

Citation Formats

Collins, W. D., Johansen, H., Evans, K. J., Woodward, C. S., and Caldwell, P. M. Progress in fast, accurate multi-scale climate simulations. United States: N. p., 2015. Web. doi:10.1016/j.procs.2015.05.465.
Collins, W. D., Johansen, H., Evans, K. J., Woodward, C. S., & Caldwell, P. M. Progress in fast, accurate multi-scale climate simulations. United States. https://doi.org/10.1016/j.procs.2015.05.465
Collins, W. D., Johansen, H., Evans, K. J., Woodward, C. S., and Caldwell, P. M. Mon . "Progress in fast, accurate multi-scale climate simulations". United States. https://doi.org/10.1016/j.procs.2015.05.465. https://www.osti.gov/servlets/purl/1201557.
@article{osti_1201557,
title = {Progress in fast, accurate multi-scale climate simulations},
author = {Collins, W. D. and Johansen, H. and Evans, K. J. and Woodward, C. S. and Caldwell, P. M.},
abstractNote = {We present a survey of physical and computational techniques that have the potential to contribute to the next generation of high-fidelity, multi-scale climate simulations. Examples of the climate science problems that can be investigated with more depth with these computational improvements include the capture of remote forcings of localized hydrological extreme events, an accurate representation of cloud features over a range of spatial and temporal scales, and parallel, large ensembles of simulations to more effectively explore model sensitivities and uncertainties. Numerical techniques, such as adaptive mesh refinement, implicit time integration, and separate treatment of fast physical time scales are enabling improved accuracy and fidelity in simulation of dynamics and allowing more complete representations of climate features at the global scale. At the same time, partnerships with computer science teams have focused on taking advantage of evolving computer architectures such as many-core processors and GPUs. As a result, approaches which were previously considered prohibitively costly have become both more efficient and scalable. In combination, progress in these three critical areas is poised to transform climate modeling in the coming decades. These topics have been presented within a workshop titled, "Numerical and Computational Developments to Advance Multiscale Earth System Models (MSESM'15)," as part of the International Conference on Computational Sciences, Reykjavik, Iceland, June 1-3, 2015.},
doi = {10.1016/j.procs.2015.05.465},
journal = {Procedia Computer Science},
number = C,
volume = 51,
place = {United States},
year = {Mon Jun 01 00:00:00 EDT 2015},
month = {Mon Jun 01 00:00:00 EDT 2015}
}

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