The Atlantic Multidecadal Oscillation controls the impact of the North Atlantic Oscillation on North European climate
European climate is heavily influenced by the North Atlantic Oscillation (NAO). However, the spatial structure of the NAO is varying with time, affecting its regional importance. By analyzing an 850-year global climate model simulation of the last millennium it is shown that the variations in the sp...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/aba925 |
| _version_ | 1797747825276092416 |
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| author | Florian Börgel Claudia Frauen Thomas Neumann H E Markus Meier |
| author_facet | Florian Börgel Claudia Frauen Thomas Neumann H E Markus Meier |
| author_sort | Florian Börgel |
| collection | DOAJ |
| description | European climate is heavily influenced by the North Atlantic Oscillation (NAO). However, the spatial structure of the NAO is varying with time, affecting its regional importance. By analyzing an 850-year global climate model simulation of the last millennium it is shown that the variations in the spatial structure of the NAO can be linked to the Atlantic Multidecadal Oscillation (AMO). The AMO changes the zonal position of the NAO centers of action, moving them closer to Europe or North America. During AMO+ states, the Icelandic Low moves further towards North America while the Azores High moves further towards Europe and vice versa for AMO- states. The results of a regional downscaling for the East Atlantic/European domain show that AMO-induced changes in the spatial structure of the NAO reduce or enhance its influence on regional climate variables of the Baltic Sea such as sea surface temperature, ice extent, or river runoff. |
| first_indexed | 2024-03-12T15:57:09Z |
| format | Article |
| id | doaj.art-e008b180c0934dfd8cf32e473417a59c |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T15:57:09Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-e008b180c0934dfd8cf32e473417a59c2023-08-09T14:54:15ZengIOP PublishingEnvironmental Research Letters1748-93262020-01-01151010402510.1088/1748-9326/aba925The Atlantic Multidecadal Oscillation controls the impact of the North Atlantic Oscillation on North European climateFlorian Börgel0https://orcid.org/0000-0003-3294-667XClaudia Frauen1https://orcid.org/0000-0002-8615-5702Thomas Neumann2H E Markus Meier3Leibniz Institute for Baltic Sea Research , Warnemünde, RostockGerman Climate Computing Centre, Hamburg, GermanyLeibniz Institute for Baltic Sea Research , Warnemünde, RostockLeibniz Institute for Baltic Sea Research , Warnemünde, Rostock; Swedish Meteorological and Hydrological Institute , Norrköping, SwedenEuropean climate is heavily influenced by the North Atlantic Oscillation (NAO). However, the spatial structure of the NAO is varying with time, affecting its regional importance. By analyzing an 850-year global climate model simulation of the last millennium it is shown that the variations in the spatial structure of the NAO can be linked to the Atlantic Multidecadal Oscillation (AMO). The AMO changes the zonal position of the NAO centers of action, moving them closer to Europe or North America. During AMO+ states, the Icelandic Low moves further towards North America while the Azores High moves further towards Europe and vice versa for AMO- states. The results of a regional downscaling for the East Atlantic/European domain show that AMO-induced changes in the spatial structure of the NAO reduce or enhance its influence on regional climate variables of the Baltic Sea such as sea surface temperature, ice extent, or river runoff.https://doi.org/10.1088/1748-9326/aba925Atlantic Multidecadal OscillationNorth Atlantic OscillationRegional climate |
| spellingShingle | Florian Börgel Claudia Frauen Thomas Neumann H E Markus Meier The Atlantic Multidecadal Oscillation controls the impact of the North Atlantic Oscillation on North European climate Environmental Research Letters Atlantic Multidecadal Oscillation North Atlantic Oscillation Regional climate |
| title | The Atlantic Multidecadal Oscillation controls the impact of the North Atlantic Oscillation on North European climate |
| title_full | The Atlantic Multidecadal Oscillation controls the impact of the North Atlantic Oscillation on North European climate |
| title_fullStr | The Atlantic Multidecadal Oscillation controls the impact of the North Atlantic Oscillation on North European climate |
| title_full_unstemmed | The Atlantic Multidecadal Oscillation controls the impact of the North Atlantic Oscillation on North European climate |
| title_short | The Atlantic Multidecadal Oscillation controls the impact of the North Atlantic Oscillation on North European climate |
| title_sort | atlantic multidecadal oscillation controls the impact of the north atlantic oscillation on north european climate |
| topic | Atlantic Multidecadal Oscillation North Atlantic Oscillation Regional climate |
| url | https://doi.org/10.1088/1748-9326/aba925 |
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