Decadal predictability of the North Atlantic eddy-driven jet in winter
This paper expands on work showing that the winter North Atlantic Oscillation (NAO) is predictable on decadal timescales to quantify the skill in capturing the North Atlantic eddy-driven jet’s location and speed. By focusing on decadal predictions made for years 2-9 from the 6th Coupled Model Interc...
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American Geophysical Union
2023
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ftunivreading:oai:centaur.reading.ac.uk:111403 2024-05-19T07:44:30+00:00 Decadal predictability of the North Atlantic eddy-driven jet in winter Marcheggiani, Andrea Robson, Jon Monerie, Paul-Arthur Bracegirdle, Thomas J. Smith, Doug 2023-04-28 text https://centaur.reading.ac.uk/111403/ https://centaur.reading.ac.uk/111403/8/111403%20VoR.pdf https://centaur.reading.ac.uk/111403/1/949380_1_art_file_10690544_rprlyd.pdf en eng American Geophysical Union https://centaur.reading.ac.uk/111403/8/111403%20VoR.pdf https://centaur.reading.ac.uk/111403/1/949380_1_art_file_10690544_rprlyd.pdf Marcheggiani, A. <https://centaur.reading.ac.uk/view/creators/90011296.html> orcid:0000-0002-3571-608X , Robson, J. <https://centaur.reading.ac.uk/view/creators/90002607.html> orcid:0000-0002-3467-018X , Monerie, P.-A. <https://centaur.reading.ac.uk/view/creators/90007727.html> orcid:0000-0002-5304-9559 , Bracegirdle, T. J. and Smith, D. (2023) Decadal predictability of the North Atlantic eddy-driven jet in winter. Geophysical Research Letters, 50 (8). e2022GL102071. ISSN 1944-8007 doi: https://doi.org/10.1029/2022GL102071 <https://doi.org/10.1029/2022GL102071> cc_by_4 Article PeerReviewed 2023 ftunivreading https://doi.org/10.1029/2022GL102071 2024-05-01T00:31:01Z This paper expands on work showing that the winter North Atlantic Oscillation (NAO) is predictable on decadal timescales to quantify the skill in capturing the North Atlantic eddy-driven jet’s location and speed. By focusing on decadal predictions made for years 2-9 from the 6th Coupled Model Intercomparison Project over 1960-2005 we find that there is significant skill in jet latitude and, especially, jet speed associated with the skill in the NAO. However, the skill in the NAO and jet latitude and speed indices appears to be sensitive to the period over which it is assessed. In particular, skill drops considerably when evaluating hindcasts up to the present day as models fail to capture the recent observed northern shift and strengthening of the winter eddy-driven jet, and more thus positive NAO. We suggest the drop in atmospheric circulation skill is related to reduced skill in North Atlantic sea surface temperatures. Article in Journal/Newspaper North Atlantic North Atlantic oscillation CentAUR: Central Archive at the University of Reading Geophysical Research Letters 50 8 |
institution |
Open Polar |
collection |
CentAUR: Central Archive at the University of Reading |
op_collection_id |
ftunivreading |
language |
English |
description |
This paper expands on work showing that the winter North Atlantic Oscillation (NAO) is predictable on decadal timescales to quantify the skill in capturing the North Atlantic eddy-driven jet’s location and speed. By focusing on decadal predictions made for years 2-9 from the 6th Coupled Model Intercomparison Project over 1960-2005 we find that there is significant skill in jet latitude and, especially, jet speed associated with the skill in the NAO. However, the skill in the NAO and jet latitude and speed indices appears to be sensitive to the period over which it is assessed. In particular, skill drops considerably when evaluating hindcasts up to the present day as models fail to capture the recent observed northern shift and strengthening of the winter eddy-driven jet, and more thus positive NAO. We suggest the drop in atmospheric circulation skill is related to reduced skill in North Atlantic sea surface temperatures. |
format |
Article in Journal/Newspaper |
author |
Marcheggiani, Andrea Robson, Jon Monerie, Paul-Arthur Bracegirdle, Thomas J. Smith, Doug |
spellingShingle |
Marcheggiani, Andrea Robson, Jon Monerie, Paul-Arthur Bracegirdle, Thomas J. Smith, Doug Decadal predictability of the North Atlantic eddy-driven jet in winter |
author_facet |
Marcheggiani, Andrea Robson, Jon Monerie, Paul-Arthur Bracegirdle, Thomas J. Smith, Doug |
author_sort |
Marcheggiani, Andrea |
title |
Decadal predictability of the North Atlantic eddy-driven jet in winter |
title_short |
Decadal predictability of the North Atlantic eddy-driven jet in winter |
title_full |
Decadal predictability of the North Atlantic eddy-driven jet in winter |
title_fullStr |
Decadal predictability of the North Atlantic eddy-driven jet in winter |
title_full_unstemmed |
Decadal predictability of the North Atlantic eddy-driven jet in winter |
title_sort |
decadal predictability of the north atlantic eddy-driven jet in winter |
publisher |
American Geophysical Union |
publishDate |
2023 |
url |
https://centaur.reading.ac.uk/111403/ https://centaur.reading.ac.uk/111403/8/111403%20VoR.pdf https://centaur.reading.ac.uk/111403/1/949380_1_art_file_10690544_rprlyd.pdf |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
https://centaur.reading.ac.uk/111403/8/111403%20VoR.pdf https://centaur.reading.ac.uk/111403/1/949380_1_art_file_10690544_rprlyd.pdf Marcheggiani, A. <https://centaur.reading.ac.uk/view/creators/90011296.html> orcid:0000-0002-3571-608X , Robson, J. <https://centaur.reading.ac.uk/view/creators/90002607.html> orcid:0000-0002-3467-018X , Monerie, P.-A. <https://centaur.reading.ac.uk/view/creators/90007727.html> orcid:0000-0002-5304-9559 , Bracegirdle, T. J. and Smith, D. (2023) Decadal predictability of the North Atlantic eddy-driven jet in winter. Geophysical Research Letters, 50 (8). e2022GL102071. ISSN 1944-8007 doi: https://doi.org/10.1029/2022GL102071 <https://doi.org/10.1029/2022GL102071> |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1029/2022GL102071 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
8 |
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1799484292531748864 |