The low-resolution CCSM2 revisited: new adjustments and a present-day control run
International audience The low-resolution (T31) version of the Community Climate System Model CCSM2.0.1 is revisited and adjusted by deepening the Greenland-Scotland ridge, changing oceanic mixing parameters, and applying a regional freshwater flux adjustment at high northern latitudes. The main pur...
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ftinsu:oai:HAL:hal-00298413v1 2023-11-12T04:17:57+01:00 The low-resolution CCSM2 revisited: new adjustments and a present-day control run Prange, M. DFG Research Center Ocean Margins and Department of Geosciences University of Bremen 2006-08-18 https://hal.science/hal-00298413 https://hal.science/hal-00298413/document https://hal.science/hal-00298413/file/osd-3-1293-2006.pdf en eng HAL CCSD European Geosciences Union hal-00298413 https://hal.science/hal-00298413 https://hal.science/hal-00298413/document https://hal.science/hal-00298413/file/osd-3-1293-2006.pdf info:eu-repo/semantics/OpenAccess ISSN: 1812-0806 EISSN: 1812-0822 Ocean Science Discussions https://hal.science/hal-00298413 Ocean Science Discussions, 2006, 3 (4), pp.1293-1348 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2006 ftinsu 2023-10-25T16:28:01Z International audience The low-resolution (T31) version of the Community Climate System Model CCSM2.0.1 is revisited and adjusted by deepening the Greenland-Scotland ridge, changing oceanic mixing parameters, and applying a regional freshwater flux adjustment at high northern latitudes. The main purpose of these adjustments is to maintain a robust Atlantic meridional overturning circulation which collapses in the original model release. The paper describes the present-day control run of the adjusted model which is brought into climatic equilibrium by applying a deep-ocean acceleration technique. The accelerated integration is extended by a 100-year synchronous phase. The simulated meridional overturning circulation has a maximum of 14×10 6 m 3 s ?1 in the North Atlantic. Most shortcomings found in the control run are identified as "typical problems" in global climate modelling. Given its good simulation skills and its relatively low resource demands, the adjusted low-resolution version of CCSM2.0.1 appears to be a reasonable alternative to the latest low-resolution Community Climate System Model release (CCSM3.0) if runtime is a critical factor. Article in Journal/Newspaper Greenland Greenland-Scotland Ridge North Atlantic Institut national des sciences de l'Univers: HAL-INSU Greenland |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Prange, M. The low-resolution CCSM2 revisited: new adjustments and a present-day control run |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience The low-resolution (T31) version of the Community Climate System Model CCSM2.0.1 is revisited and adjusted by deepening the Greenland-Scotland ridge, changing oceanic mixing parameters, and applying a regional freshwater flux adjustment at high northern latitudes. The main purpose of these adjustments is to maintain a robust Atlantic meridional overturning circulation which collapses in the original model release. The paper describes the present-day control run of the adjusted model which is brought into climatic equilibrium by applying a deep-ocean acceleration technique. The accelerated integration is extended by a 100-year synchronous phase. The simulated meridional overturning circulation has a maximum of 14×10 6 m 3 s ?1 in the North Atlantic. Most shortcomings found in the control run are identified as "typical problems" in global climate modelling. Given its good simulation skills and its relatively low resource demands, the adjusted low-resolution version of CCSM2.0.1 appears to be a reasonable alternative to the latest low-resolution Community Climate System Model release (CCSM3.0) if runtime is a critical factor. |
author2 |
DFG Research Center Ocean Margins and Department of Geosciences University of Bremen |
format |
Article in Journal/Newspaper |
author |
Prange, M. |
author_facet |
Prange, M. |
author_sort |
Prange, M. |
title |
The low-resolution CCSM2 revisited: new adjustments and a present-day control run |
title_short |
The low-resolution CCSM2 revisited: new adjustments and a present-day control run |
title_full |
The low-resolution CCSM2 revisited: new adjustments and a present-day control run |
title_fullStr |
The low-resolution CCSM2 revisited: new adjustments and a present-day control run |
title_full_unstemmed |
The low-resolution CCSM2 revisited: new adjustments and a present-day control run |
title_sort |
low-resolution ccsm2 revisited: new adjustments and a present-day control run |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-00298413 https://hal.science/hal-00298413/document https://hal.science/hal-00298413/file/osd-3-1293-2006.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland-Scotland Ridge North Atlantic |
genre_facet |
Greenland Greenland-Scotland Ridge North Atlantic |
op_source |
ISSN: 1812-0806 EISSN: 1812-0822 Ocean Science Discussions https://hal.science/hal-00298413 Ocean Science Discussions, 2006, 3 (4), pp.1293-1348 |
op_relation |
hal-00298413 https://hal.science/hal-00298413 https://hal.science/hal-00298413/document https://hal.science/hal-00298413/file/osd-3-1293-2006.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782334691131523072 |