Regional climate simulation with a mosaic of RCMs
The aim of the present study is to explore the possibility of getting high horizontal resolution over Europe by using a cluster of low computational cost atmospheric general circulation models (AGCM). The approach is based on global models with stretched grid, driven by a medium-resolution model ser...
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| Format: | Article |
| Language: | English |
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Borntraeger
2010-06-01
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| Series: | Meteorologische Zeitschrift |
| Online Access: | http://dx.doi.org/10.1127/0941-2948/2010/0455 |
| _version_ | 1797332573698916352 |
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| author | Michel Déqué |
| author_facet | Michel Déqué |
| author_sort | Michel Déqué |
| collection | DOAJ |
| description | The aim of the present study is to explore the possibility of getting high horizontal resolution over Europe by using a cluster of low computational cost atmospheric general circulation models (AGCM). The approach is based on global models with stretched grid, driven by a medium-resolution model serving as a "conductor" to maintain time consistency of the synoptic events and avoid climate degradation in the low resolution part of the grids. Thus the global models behave as regional climate models (RCM). A perfect model approach is used with a high resolution AGCM serving as a reference. The results show that when the different models are merged on a high resolution grid, the mean climate is similar to what is obtained with an equivalent high resolution AGCM with an unstretched grid. A climate change numerical experiment shows that this is also valid for the climate response to increased greenhouse gas concentration. |
| first_indexed | 2024-03-08T07:51:49Z |
| format | Article |
| id | doaj.art-6fd7067314af40459b35d35465587584 |
| institution | Directory Open Access Journal |
| issn | 0941-2948 |
| language | English |
| last_indexed | 2024-03-08T07:51:49Z |
| publishDate | 2010-06-01 |
| publisher | Borntraeger |
| record_format | Article |
| series | Meteorologische Zeitschrift |
| spelling | doaj.art-6fd7067314af40459b35d354655875842024-02-02T14:44:10ZengBorntraegerMeteorologische Zeitschrift0941-29482010-06-0119325926610.1127/0941-2948/2010/045575079Regional climate simulation with a mosaic of RCMsMichel DéquéThe aim of the present study is to explore the possibility of getting high horizontal resolution over Europe by using a cluster of low computational cost atmospheric general circulation models (AGCM). The approach is based on global models with stretched grid, driven by a medium-resolution model serving as a "conductor" to maintain time consistency of the synoptic events and avoid climate degradation in the low resolution part of the grids. Thus the global models behave as regional climate models (RCM). A perfect model approach is used with a high resolution AGCM serving as a reference. The results show that when the different models are merged on a high resolution grid, the mean climate is similar to what is obtained with an equivalent high resolution AGCM with an unstretched grid. A climate change numerical experiment shows that this is also valid for the climate response to increased greenhouse gas concentration.http://dx.doi.org/10.1127/0941-2948/2010/0455 |
| spellingShingle | Michel Déqué Regional climate simulation with a mosaic of RCMs Meteorologische Zeitschrift |
| title | Regional climate simulation with a mosaic of RCMs |
| title_full | Regional climate simulation with a mosaic of RCMs |
| title_fullStr | Regional climate simulation with a mosaic of RCMs |
| title_full_unstemmed | Regional climate simulation with a mosaic of RCMs |
| title_short | Regional climate simulation with a mosaic of RCMs |
| title_sort | regional climate simulation with a mosaic of rcms |
| url | http://dx.doi.org/10.1127/0941-2948/2010/0455 |
| work_keys_str_mv | AT micheldeque regionalclimatesimulationwithamosaicofrcms |