A GCM study of the influence of equatorial winds on the timing of sudden stratospheric warmings
A full troposphere-stratosphere-mesosphere global circulation model is used in a set of idealised experiments to investigate the sensitivity of the Northern Hemisphere winter stratospheric flow to improvements in the equatorial zonal winds. The model shows significant sensitivity to variability in t...
| Main Authors: | , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
2006
|
| _version_ | 1797094108889612288 |
|---|---|
| author | Pascoe, C Gray, L Scaife, A |
| author_facet | Pascoe, C Gray, L Scaife, A |
| author_sort | Pascoe, C |
| collection | OXFORD |
| description | A full troposphere-stratosphere-mesosphere global circulation model is used in a set of idealised experiments to investigate the sensitivity of the Northern Hemisphere winter stratospheric flow to improvements in the equatorial zonal winds. The model shows significant sensitivity to variability in the upper equatorial stratosphere, the imposition of SAO and QBO like variability in this region advances the timing of midwinter sudden warmings by about one month. Perturbations to the lower equatorial stratosphere are mainly found to influence early winter polar variability. These results suggest that it is important to pay attention to the capability of models to simulate realistic variability in the upper equatorial stratosphere. Copyright 2006 by the American Geophysical Union. |
| first_indexed | 2024-03-07T04:09:34Z |
| format | Journal article |
| id | oxford-uuid:c75d8f08-30de-4a38-8862-23c74ac9978d |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:09:34Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:c75d8f08-30de-4a38-8862-23c74ac9978d2022-03-27T06:44:30ZA GCM study of the influence of equatorial winds on the timing of sudden stratospheric warmingsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c75d8f08-30de-4a38-8862-23c74ac9978dEnglishSymplectic Elements at Oxford2006Pascoe, CGray, LScaife, AA full troposphere-stratosphere-mesosphere global circulation model is used in a set of idealised experiments to investigate the sensitivity of the Northern Hemisphere winter stratospheric flow to improvements in the equatorial zonal winds. The model shows significant sensitivity to variability in the upper equatorial stratosphere, the imposition of SAO and QBO like variability in this region advances the timing of midwinter sudden warmings by about one month. Perturbations to the lower equatorial stratosphere are mainly found to influence early winter polar variability. These results suggest that it is important to pay attention to the capability of models to simulate realistic variability in the upper equatorial stratosphere. Copyright 2006 by the American Geophysical Union. |
| spellingShingle | Pascoe, C Gray, L Scaife, A A GCM study of the influence of equatorial winds on the timing of sudden stratospheric warmings |
| title | A GCM study of the influence of equatorial winds on the timing of sudden stratospheric warmings |
| title_full | A GCM study of the influence of equatorial winds on the timing of sudden stratospheric warmings |
| title_fullStr | A GCM study of the influence of equatorial winds on the timing of sudden stratospheric warmings |
| title_full_unstemmed | A GCM study of the influence of equatorial winds on the timing of sudden stratospheric warmings |
| title_short | A GCM study of the influence of equatorial winds on the timing of sudden stratospheric warmings |
| title_sort | gcm study of the influence of equatorial winds on the timing of sudden stratospheric warmings |
| work_keys_str_mv | AT pascoec agcmstudyoftheinfluenceofequatorialwindsonthetimingofsuddenstratosphericwarmings AT grayl agcmstudyoftheinfluenceofequatorialwindsonthetimingofsuddenstratosphericwarmings AT scaifea agcmstudyoftheinfluenceofequatorialwindsonthetimingofsuddenstratosphericwarmings AT pascoec gcmstudyoftheinfluenceofequatorialwindsonthetimingofsuddenstratosphericwarmings AT grayl gcmstudyoftheinfluenceofequatorialwindsonthetimingofsuddenstratosphericwarmings AT scaifea gcmstudyoftheinfluenceofequatorialwindsonthetimingofsuddenstratosphericwarmings |