The sensitivity of Euro-Atlantic regimes to model horizontal resolution
There is growing evidence that the atmospheric dynamics of the Euro‐Atlantic sector during winter is driven in part by the presence of quasi‐persistent regimes. However, general circulation models typically struggle to simulate these with, for example, an overly weakly persistent blocking regime. Pr...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
| Published: |
American Geophysical Union
2019
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| _version_ | 1826258960709058560 |
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| author | Strommen, K Mavilia, I Corti, S Matsueda, M Davini, P Hadenberg, J Vidale, P Mizuta, R |
| author_facet | Strommen, K Mavilia, I Corti, S Matsueda, M Davini, P Hadenberg, J Vidale, P Mizuta, R |
| author_sort | Strommen, K |
| collection | OXFORD |
| description | There is growing evidence that the atmospheric dynamics of the Euro‐Atlantic sector during winter is driven in part by the presence of quasi‐persistent regimes. However, general circulation models typically struggle to simulate these with, for example, an overly weakly persistent blocking regime. Previous studies have showed that increased horizontal resolution can improve the regime structure of a model but have so far only considered a single model with only one ensemble member at each resolution, leaving open the possibility that this may be either coincidental or model dependent. We show that the improvement in regime structure due to increased resolution is robust across multiple models with multiple ensemble members. However, while the high‐resolution models have notably more tightly clustered data, other aspects of the regimes may not necessarily improve and are also subject to a large amount of sampling variability that typically requires at least three ensemble members to surmount. |
| first_indexed | 2024-03-06T18:42:19Z |
| format | Journal article |
| id | oxford-uuid:0d4feecc-05a3-4c02-b248-c8ecbbf4bf8b |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:42:19Z |
| publishDate | 2019 |
| publisher | American Geophysical Union |
| record_format | dspace |
| spelling | oxford-uuid:0d4feecc-05a3-4c02-b248-c8ecbbf4bf8b2022-03-26T09:39:50ZThe sensitivity of Euro-Atlantic regimes to model horizontal resolutionJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0d4feecc-05a3-4c02-b248-c8ecbbf4bf8bSymplectic Elements at OxfordAmerican Geophysical Union2019Strommen, KMavilia, ICorti, SMatsueda, MDavini, PHadenberg, JVidale, PMizuta, RThere is growing evidence that the atmospheric dynamics of the Euro‐Atlantic sector during winter is driven in part by the presence of quasi‐persistent regimes. However, general circulation models typically struggle to simulate these with, for example, an overly weakly persistent blocking regime. Previous studies have showed that increased horizontal resolution can improve the regime structure of a model but have so far only considered a single model with only one ensemble member at each resolution, leaving open the possibility that this may be either coincidental or model dependent. We show that the improvement in regime structure due to increased resolution is robust across multiple models with multiple ensemble members. However, while the high‐resolution models have notably more tightly clustered data, other aspects of the regimes may not necessarily improve and are also subject to a large amount of sampling variability that typically requires at least three ensemble members to surmount. |
| spellingShingle | Strommen, K Mavilia, I Corti, S Matsueda, M Davini, P Hadenberg, J Vidale, P Mizuta, R The sensitivity of Euro-Atlantic regimes to model horizontal resolution |
| title | The sensitivity of Euro-Atlantic regimes to model horizontal resolution |
| title_full | The sensitivity of Euro-Atlantic regimes to model horizontal resolution |
| title_fullStr | The sensitivity of Euro-Atlantic regimes to model horizontal resolution |
| title_full_unstemmed | The sensitivity of Euro-Atlantic regimes to model horizontal resolution |
| title_short | The sensitivity of Euro-Atlantic regimes to model horizontal resolution |
| title_sort | sensitivity of euro atlantic regimes to model horizontal resolution |
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