The Effect of a Well-Resolved Stratosphere on Surface Climate: Differences between CMIP5 Simulations with High and Low Top Versions of the Met Office Climate Model
The importance of using a general circulation model that includes a well-resolved stratosphere for climate simulations, and particularly the influence this has on surface climate, is investigated. High top model sim- ulations are run with the Met Office Unified Model for the Coupled Model Intercompa...
| Main Authors: | , , , , |
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| Format: | Journal article |
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2012
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| _version_ | 1826274736798171136 |
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| author | Hardiman, S Butchart, N Hinton, T Osprey, S Gray, L |
| author_facet | Hardiman, S Butchart, N Hinton, T Osprey, S Gray, L |
| author_sort | Hardiman, S |
| collection | OXFORD |
| description | The importance of using a general circulation model that includes a well-resolved stratosphere for climate simulations, and particularly the influence this has on surface climate, is investigated. High top model sim- ulations are run with the Met Office Unified Model for the Coupled Model Intercomparison Project Phase 5 (CMIP5). These simulations are compared to equivalent simulations run using a low top model differing only in vertical extent and vertical resolution above 15 km. The period 1960-2002 is analyzed and compared to observations and the European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis dataset. Long-term climatology, variability, and trends in surface temperature and sea ice, along with the variability of the annular mode index, are found to be insensitive to the addition of a well-resolved stratosphere. The inclusion of a well-resolved stratosphere, however, does improve the impact of atmospheric teleconnections on surface climate, in particular the response to El Niño-Southern Oscillation, the quasi-biennial oscillation, and midwinter stratospheric sudden warmings (i.e., zonal mean wind reversals in the middle stratosphere). Thus, including a well-represented stratosphere could improve climate simulation on intraseasonal to in- terannual time scales. © 2012 American Meteorological Society. |
| first_indexed | 2024-03-06T22:48:00Z |
| format | Journal article |
| id | oxford-uuid:5dd966b1-042e-4a24-a3a6-03466a2fa3fb |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:48:00Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:5dd966b1-042e-4a24-a3a6-03466a2fa3fb2022-03-26T17:36:49ZThe Effect of a Well-Resolved Stratosphere on Surface Climate: Differences between CMIP5 Simulations with High and Low Top Versions of the Met Office Climate ModelJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5dd966b1-042e-4a24-a3a6-03466a2fa3fbSymplectic Elements at Oxford2012Hardiman, SButchart, NHinton, TOsprey, SGray, LThe importance of using a general circulation model that includes a well-resolved stratosphere for climate simulations, and particularly the influence this has on surface climate, is investigated. High top model sim- ulations are run with the Met Office Unified Model for the Coupled Model Intercomparison Project Phase 5 (CMIP5). These simulations are compared to equivalent simulations run using a low top model differing only in vertical extent and vertical resolution above 15 km. The period 1960-2002 is analyzed and compared to observations and the European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis dataset. Long-term climatology, variability, and trends in surface temperature and sea ice, along with the variability of the annular mode index, are found to be insensitive to the addition of a well-resolved stratosphere. The inclusion of a well-resolved stratosphere, however, does improve the impact of atmospheric teleconnections on surface climate, in particular the response to El Niño-Southern Oscillation, the quasi-biennial oscillation, and midwinter stratospheric sudden warmings (i.e., zonal mean wind reversals in the middle stratosphere). Thus, including a well-represented stratosphere could improve climate simulation on intraseasonal to in- terannual time scales. © 2012 American Meteorological Society. |
| spellingShingle | Hardiman, S Butchart, N Hinton, T Osprey, S Gray, L The Effect of a Well-Resolved Stratosphere on Surface Climate: Differences between CMIP5 Simulations with High and Low Top Versions of the Met Office Climate Model |
| title | The Effect of a Well-Resolved Stratosphere on Surface Climate: Differences between CMIP5 Simulations with High and Low Top Versions of the Met Office Climate Model |
| title_full | The Effect of a Well-Resolved Stratosphere on Surface Climate: Differences between CMIP5 Simulations with High and Low Top Versions of the Met Office Climate Model |
| title_fullStr | The Effect of a Well-Resolved Stratosphere on Surface Climate: Differences between CMIP5 Simulations with High and Low Top Versions of the Met Office Climate Model |
| title_full_unstemmed | The Effect of a Well-Resolved Stratosphere on Surface Climate: Differences between CMIP5 Simulations with High and Low Top Versions of the Met Office Climate Model |
| title_short | The Effect of a Well-Resolved Stratosphere on Surface Climate: Differences between CMIP5 Simulations with High and Low Top Versions of the Met Office Climate Model |
| title_sort | effect of a well resolved stratosphere on surface climate differences between cmip5 simulations with high and low top versions of the met office climate model |
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