Influence of sudden stratospheric warmings on tropospheric winds
The influence of changes in the zonal mean stratospheric potential vorticity, associated with sudden stratospheric warmings, on the zonal mean zonal wind in the troposphere is investigated by piecewise potential vorticity inversion. The focus is on the major sudden stratospheric warming that occurre...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Borntraeger
2011-06-01
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| Series: | Meteorologische Zeitschrift |
| Online Access: | http://dx.doi.org/10.1127/0941-2948/2011/0503 |
| _version_ | 1797332617231597568 |
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| author | Yvonne Hinssen Aarnout van Delden Theo Opsteegh |
| author_facet | Yvonne Hinssen Aarnout van Delden Theo Opsteegh |
| author_sort | Yvonne Hinssen |
| collection | DOAJ |
| description | The influence of changes in the zonal mean stratospheric potential vorticity, associated with sudden stratospheric warmings, on the zonal mean zonal wind in the troposphere is investigated by piecewise potential vorticity inversion. The focus is on the major sudden stratospheric warming that occurred in January 2009. It is shown that changes in the potential vorticity distribution associated with sudden stratospheric warmings may result in substantially less westerly or more easterly winds in the mid-troposphere in midlatitudes. The potential vorticity changes accompanying the sudden stratospheric warming persist for several months in the lower stratosphere. A comparison of years with and years without a sudden stratospheric warming leads to the conclusion that the change in the zonal mean tropospheric windspeed due to the sudden stratospheric warming can be as large as -5 m s-1 and that this change can easily persist until the end of the winter. Information on the stratospheric potential vorticity distribution may therefore be valuable for winter weather forecasts on a monthly timescale. |
| first_indexed | 2024-03-08T07:51:30Z |
| format | Article |
| id | doaj.art-164402cdadd845a2aa1f494ecbd0920f |
| institution | Directory Open Access Journal |
| issn | 0941-2948 |
| language | English |
| last_indexed | 2024-03-08T07:51:30Z |
| publishDate | 2011-06-01 |
| publisher | Borntraeger |
| record_format | Article |
| series | Meteorologische Zeitschrift |
| spelling | doaj.art-164402cdadd845a2aa1f494ecbd0920f2024-02-02T14:42:39ZengBorntraegerMeteorologische Zeitschrift0941-29482011-06-0120325926610.1127/0941-2948/2011/050376127Influence of sudden stratospheric warmings on tropospheric windsYvonne HinssenAarnout van DeldenTheo OpsteeghThe influence of changes in the zonal mean stratospheric potential vorticity, associated with sudden stratospheric warmings, on the zonal mean zonal wind in the troposphere is investigated by piecewise potential vorticity inversion. The focus is on the major sudden stratospheric warming that occurred in January 2009. It is shown that changes in the potential vorticity distribution associated with sudden stratospheric warmings may result in substantially less westerly or more easterly winds in the mid-troposphere in midlatitudes. The potential vorticity changes accompanying the sudden stratospheric warming persist for several months in the lower stratosphere. A comparison of years with and years without a sudden stratospheric warming leads to the conclusion that the change in the zonal mean tropospheric windspeed due to the sudden stratospheric warming can be as large as -5 m s-1 and that this change can easily persist until the end of the winter. Information on the stratospheric potential vorticity distribution may therefore be valuable for winter weather forecasts on a monthly timescale.http://dx.doi.org/10.1127/0941-2948/2011/0503 |
| spellingShingle | Yvonne Hinssen Aarnout van Delden Theo Opsteegh Influence of sudden stratospheric warmings on tropospheric winds Meteorologische Zeitschrift |
| title | Influence of sudden stratospheric warmings on tropospheric winds |
| title_full | Influence of sudden stratospheric warmings on tropospheric winds |
| title_fullStr | Influence of sudden stratospheric warmings on tropospheric winds |
| title_full_unstemmed | Influence of sudden stratospheric warmings on tropospheric winds |
| title_short | Influence of sudden stratospheric warmings on tropospheric winds |
| title_sort | influence of sudden stratospheric warmings on tropospheric winds |
| url | http://dx.doi.org/10.1127/0941-2948/2011/0503 |
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