NCAR Release of CAM‐SE in CESM2.0: A Reformulation of the Spectral Element Dynamical Core in Dry‐Mass Vertical Coordinates With Comprehensive Treatment of Condensates and Energy
Abstract
It is the purpose of this paper to provide a comprehensive documentation of the new NCAR (National Center for Atmospheric Research) version of the spectral element (SE) dynamical core as part of the Community Earth System Model (CESM2.0) release. This version differs from previous releases of the SE dynamical core in several ways. Most notably the hybrid sigma vertical coordinate is based on dry air mass, the condensates are dynamically active in the thermodynamic and momentum equations (also referred to as condensate loading), and the continuous equations of motion conserve a more comprehensive total energy that includes condensates. Not related to the vertical coordinate change, the hyperviscosity operators and the vertical remapping algorithms have been modified. The code base has been significantly reduced, sped up, and cleaned up as part of integrating SE as a dynamical core in the CAM (Community Atmosphere Model) repository rather than importing the SE dynamical core from High–Order Methods Modeling environment as an external code.
- Authors:
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- National Center for Atmospheric Research Boulder CO USA
- School of Marine and Atmospheric SciencesState University of New York at Stony Brook Stony Brook NY USA
- Sandia National Laboratories Albuquerque NM USA
- Department of Land, Air and Water ResourcesUniversity of California Davis CA USA
- Ecole Polytechnique, UMR 8539, Laboratoire de Météorologie Dynamique/IPSL Palaiseau France
- Rosenstiel School of Marine and Atmospheric ScienceUniversity of Miami Miami FL USA
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1460605
- Alternate Identifier(s):
- OSTI ID: 1460607; OSTI ID: 1528868
- Report Number(s):
- SAND-2019-6821J
Journal ID: ISSN 1942-2466
- Grant/Contract Number:
- FC02-97ER62402; AC04-94AL85000
- Resource Type:
- Published Article
- Journal Name:
- Journal of Advances in Modeling Earth Systems
- Additional Journal Information:
- Journal Name: Journal of Advances in Modeling Earth Systems Journal Volume: 10 Journal Issue: 7; Journal ID: ISSN 1942-2466
- Publisher:
- American Geophysical Union (AGU)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; CESM; Spectral‐elements; Aqua‐planet; Computational efficiency; condensate loading; total energy
Citation Formats
Lauritzen, P. H., Nair, R. D., Herrington, A. R., Callaghan, P., Goldhaber, S., Dennis, J. M., Bacmeister, J. T., Eaton, B. E., Zarzycki, C. M., Taylor, Mark A., Ullrich, P. A., Dubos, T., Gettelman, A., Neale, R. B., Dobbins, B., Reed, K. A., Hannay, C., Medeiros, B., Benedict, J. J., and Tribbia, J. J. NCAR Release of CAM‐SE in CESM2.0: A Reformulation of the Spectral Element Dynamical Core in Dry‐Mass Vertical Coordinates With Comprehensive Treatment of Condensates and Energy. United States: N. p., 2018.
Web. doi:10.1029/2017MS001257.
Lauritzen, P. H., Nair, R. D., Herrington, A. R., Callaghan, P., Goldhaber, S., Dennis, J. M., Bacmeister, J. T., Eaton, B. E., Zarzycki, C. M., Taylor, Mark A., Ullrich, P. A., Dubos, T., Gettelman, A., Neale, R. B., Dobbins, B., Reed, K. A., Hannay, C., Medeiros, B., Benedict, J. J., & Tribbia, J. J. NCAR Release of CAM‐SE in CESM2.0: A Reformulation of the Spectral Element Dynamical Core in Dry‐Mass Vertical Coordinates With Comprehensive Treatment of Condensates and Energy. United States. doi:https://doi.org/10.1029/2017MS001257
Lauritzen, P. H., Nair, R. D., Herrington, A. R., Callaghan, P., Goldhaber, S., Dennis, J. M., Bacmeister, J. T., Eaton, B. E., Zarzycki, C. M., Taylor, Mark A., Ullrich, P. A., Dubos, T., Gettelman, A., Neale, R. B., Dobbins, B., Reed, K. A., Hannay, C., Medeiros, B., Benedict, J. J., and Tribbia, J. J. Tue .
"NCAR Release of CAM‐SE in CESM2.0: A Reformulation of the Spectral Element Dynamical Core in Dry‐Mass Vertical Coordinates With Comprehensive Treatment of Condensates and Energy". United States. doi:https://doi.org/10.1029/2017MS001257.
@article{osti_1460605,
title = {NCAR Release of CAM‐SE in CESM2.0: A Reformulation of the Spectral Element Dynamical Core in Dry‐Mass Vertical Coordinates With Comprehensive Treatment of Condensates and Energy},
author = {Lauritzen, P. H. and Nair, R. D. and Herrington, A. R. and Callaghan, P. and Goldhaber, S. and Dennis, J. M. and Bacmeister, J. T. and Eaton, B. E. and Zarzycki, C. M. and Taylor, Mark A. and Ullrich, P. A. and Dubos, T. and Gettelman, A. and Neale, R. B. and Dobbins, B. and Reed, K. A. and Hannay, C. and Medeiros, B. and Benedict, J. J. and Tribbia, J. J.},
abstractNote = {It is the purpose of this paper to provide a comprehensive documentation of the new NCAR (National Center for Atmospheric Research) version of the spectral element (SE) dynamical core as part of the Community Earth System Model (CESM2.0) release. This version differs from previous releases of the SE dynamical core in several ways. Most notably the hybrid sigma vertical coordinate is based on dry air mass, the condensates are dynamically active in the thermodynamic and momentum equations (also referred to as condensate loading), and the continuous equations of motion conserve a more comprehensive total energy that includes condensates. Not related to the vertical coordinate change, the hyperviscosity operators and the vertical remapping algorithms have been modified. The code base has been significantly reduced, sped up, and cleaned up as part of integrating SE as a dynamical core in the CAM (Community Atmosphere Model) repository rather than importing the SE dynamical core from High–Order Methods Modeling environment as an external code.},
doi = {10.1029/2017MS001257},
journal = {Journal of Advances in Modeling Earth Systems},
number = 7,
volume = 10,
place = {United States},
year = {2018},
month = {7}
}
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DOI: https://doi.org/10.1029/2017MS001257
DOI: https://doi.org/10.1029/2017MS001257
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