On cold spells in North America and storminess in western Europe
Abstract We discuss the dynamical and statistical links between cold extremes over eastern North America and storminess over western Europe, with a focus on the midlatitude jet stream, the North Atlantic Oscillation (NAO) and the Pacific‐North American Pattern (PNA). The analysis is performed on the...
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| Format: | Article |
| Language: | English |
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Wiley
2016-06-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2016GL069392 |
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| _version_ | 1849321825271545856 |
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| author | Gabriele Messori Rodrigo Caballero Marco Gaetani |
| author_facet | Gabriele Messori Rodrigo Caballero Marco Gaetani |
| author_sort | Gabriele Messori |
| collection | DOAJ |
| description | Abstract We discuss the dynamical and statistical links between cold extremes over eastern North America and storminess over western Europe, with a focus on the midlatitude jet stream, the North Atlantic Oscillation (NAO) and the Pacific‐North American Pattern (PNA). The analysis is performed on the European Centre for Medium‐Range Weather Forecasts 20th Century Reanalysis. The large‐scale circulation associated with the cold spells corresponds to advection of cold air from the Arctic region into North America and to a very zonal and intense North Atlantic jet, shifted persistently south of its climatological location. These features of the Atlantic jet are conducive to destructive windstorms and intense precipitation over a large part of southern and continental Europe and the British Isles. The cold spells are preceded by a negative NAO and followed by a positive PNA; however, we interpret the associated circulation anomalies as being distinct from these standard modes of climate variability. |
| format | Article |
| id | doaj-art-07e4f331d7314472ae728d00b203f45f |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-07e4f331d7314472ae728d00b203f45f2025-08-20T03:49:37ZengWileyGeophysical Research Letters0094-82761944-80072016-06-0143126620662810.1002/2016GL069392On cold spells in North America and storminess in western EuropeGabriele Messori0Rodrigo Caballero1Marco Gaetani2Department of Meteorology and Bolin Centre for Climate Research Stockholm University Stockholm SwedenDepartment of Meteorology and Bolin Centre for Climate Research Stockholm University Stockholm SwedenLATMOS/IPSL UPMC Université Paris 06 Sorbonne Universités, UVSQ, CNRS Paris FranceAbstract We discuss the dynamical and statistical links between cold extremes over eastern North America and storminess over western Europe, with a focus on the midlatitude jet stream, the North Atlantic Oscillation (NAO) and the Pacific‐North American Pattern (PNA). The analysis is performed on the European Centre for Medium‐Range Weather Forecasts 20th Century Reanalysis. The large‐scale circulation associated with the cold spells corresponds to advection of cold air from the Arctic region into North America and to a very zonal and intense North Atlantic jet, shifted persistently south of its climatological location. These features of the Atlantic jet are conducive to destructive windstorms and intense precipitation over a large part of southern and continental Europe and the British Isles. The cold spells are preceded by a negative NAO and followed by a positive PNA; however, we interpret the associated circulation anomalies as being distinct from these standard modes of climate variability.https://doi.org/10.1002/2016GL069392cold spellsdestructive windstormsjet streamNorth Atlanticprecipitationextreme events |
| spellingShingle | Gabriele Messori Rodrigo Caballero Marco Gaetani On cold spells in North America and storminess in western Europe Geophysical Research Letters cold spells destructive windstorms jet stream North Atlantic precipitation extreme events |
| title | On cold spells in North America and storminess in western Europe |
| title_full | On cold spells in North America and storminess in western Europe |
| title_fullStr | On cold spells in North America and storminess in western Europe |
| title_full_unstemmed | On cold spells in North America and storminess in western Europe |
| title_short | On cold spells in North America and storminess in western Europe |
| title_sort | on cold spells in north america and storminess in western europe |
| topic | cold spells destructive windstorms jet stream North Atlantic precipitation extreme events |
| url | https://doi.org/10.1002/2016GL069392 |
| work_keys_str_mv | AT gabrielemessori oncoldspellsinnorthamericaandstorminessinwesterneurope AT rodrigocaballero oncoldspellsinnorthamericaandstorminessinwesterneurope AT marcogaetani oncoldspellsinnorthamericaandstorminessinwesterneurope |