Combining regional mesh refinement with vertically enhanced physics to target marine stratocumulus biases as demonstrated in the Energy Exascale Earth System Model version 1
<p>In this paper we develop a novel framework aimed to significantly reduce biases related to marine stratocumulus clouds in general circulation models (GCMs) while circumventing excessive computational cost requirements. Our strategy is to increase the horizontal resolution using a regionally...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-01-01
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| Series: | Geoscientific Model Development |
| Online Access: | https://gmd.copernicus.org/articles/16/335/2023/gmd-16-335-2023.pdf |
| _version_ | 1828066363405500416 |
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| author | P. A. Bogenschutz H.-H. Lee Q. Tang T. Yamaguchi T. Yamaguchi |
| author_facet | P. A. Bogenschutz H.-H. Lee Q. Tang T. Yamaguchi T. Yamaguchi |
| author_sort | P. A. Bogenschutz |
| collection | DOAJ |
| description | <p>In this paper we develop a novel framework aimed to significantly reduce biases related to marine stratocumulus clouds in general circulation models (GCMs) while circumventing excessive computational cost requirements. Our strategy is to increase the horizontal resolution using a regionally refined mesh (RRM) over our region of interest in addition to using the Framework for Improvement by Vertical Enhancement (FIVE) to increase the vertical resolution only for specific physical processes that are important for stratocumulus. We apply the RRM off the coast of Peru in the southeastern Pacific, a region that climatologically contains the most marine stratocumulus in the subtropics. We find that our new modeling framework is able to replicate the results of our high-resolution benchmark simulation with much fidelity, while reducing the computational cost by several orders of magnitude. In addition, this framework is able to greatly reduce the long-standing biases associated with marine stratocumulus in GCMs when compared to the standard-resolution control simulation.</p> |
| first_indexed | 2024-04-10T23:29:43Z |
| format | Article |
| id | doaj.art-47e10a36428c496884fcd818729d5744 |
| institution | Directory Open Access Journal |
| issn | 1991-959X 1991-9603 |
| language | English |
| last_indexed | 2024-04-10T23:29:43Z |
| publishDate | 2023-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Geoscientific Model Development |
| spelling | doaj.art-47e10a36428c496884fcd818729d57442023-01-12T07:04:45ZengCopernicus PublicationsGeoscientific Model Development1991-959X1991-96032023-01-011633535210.5194/gmd-16-335-2023Combining regional mesh refinement with vertically enhanced physics to target marine stratocumulus biases as demonstrated in the Energy Exascale Earth System Model version 1P. A. Bogenschutz0H.-H. Lee1Q. Tang2T. Yamaguchi3T. Yamaguchi4Lawrence Livermore National Laboratory, Livermore, CA, USALawrence Livermore National Laboratory, Livermore, CA, USALawrence Livermore National Laboratory, Livermore, CA, USACooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USANOAA Earth System Research Laboratories, Chemical Science Laboratory, Boulder, CO, USA<p>In this paper we develop a novel framework aimed to significantly reduce biases related to marine stratocumulus clouds in general circulation models (GCMs) while circumventing excessive computational cost requirements. Our strategy is to increase the horizontal resolution using a regionally refined mesh (RRM) over our region of interest in addition to using the Framework for Improvement by Vertical Enhancement (FIVE) to increase the vertical resolution only for specific physical processes that are important for stratocumulus. We apply the RRM off the coast of Peru in the southeastern Pacific, a region that climatologically contains the most marine stratocumulus in the subtropics. We find that our new modeling framework is able to replicate the results of our high-resolution benchmark simulation with much fidelity, while reducing the computational cost by several orders of magnitude. In addition, this framework is able to greatly reduce the long-standing biases associated with marine stratocumulus in GCMs when compared to the standard-resolution control simulation.</p>https://gmd.copernicus.org/articles/16/335/2023/gmd-16-335-2023.pdf |
| spellingShingle | P. A. Bogenschutz H.-H. Lee Q. Tang T. Yamaguchi T. Yamaguchi Combining regional mesh refinement with vertically enhanced physics to target marine stratocumulus biases as demonstrated in the Energy Exascale Earth System Model version 1 Geoscientific Model Development |
| title | Combining regional mesh refinement with vertically enhanced physics to target marine stratocumulus biases as demonstrated in the Energy Exascale Earth System Model version 1 |
| title_full | Combining regional mesh refinement with vertically enhanced physics to target marine stratocumulus biases as demonstrated in the Energy Exascale Earth System Model version 1 |
| title_fullStr | Combining regional mesh refinement with vertically enhanced physics to target marine stratocumulus biases as demonstrated in the Energy Exascale Earth System Model version 1 |
| title_full_unstemmed | Combining regional mesh refinement with vertically enhanced physics to target marine stratocumulus biases as demonstrated in the Energy Exascale Earth System Model version 1 |
| title_short | Combining regional mesh refinement with vertically enhanced physics to target marine stratocumulus biases as demonstrated in the Energy Exascale Earth System Model version 1 |
| title_sort | combining regional mesh refinement with vertically enhanced physics to target marine stratocumulus biases as demonstrated in the energy exascale earth system model version 1 |
| url | https://gmd.copernicus.org/articles/16/335/2023/gmd-16-335-2023.pdf |
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