Behaviour of the winter North Atlantic eddy-driven jet stream in the CMIP3 integrations
A systematic analysis of the winter North Atlantic eddy-driven jet stream latitude and wind speed from 52 model integrations, taken from the coupled model intercomparison project phase 3, is carried out and compared to results obtained from the ERA-40 reanalyses. We consider here a control simulatio...
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Online Access: | https://doi.org/10.1007/s00382-012-1560-4 https://ora.ox.ac.uk/objects/uuid:9bf9e609-7fd9-4696-9b35-7456d535bd4a |
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ftuloxford:oai:ora.ox.ac.uk:uuid:9bf9e609-7fd9-4696-9b35-7456d535bd4a 2023-05-15T17:30:36+02:00 Behaviour of the winter North Atlantic eddy-driven jet stream in the CMIP3 integrations Hannachi, A Barnes, E Woollings, T 2016-07-28 https://doi.org/10.1007/s00382-012-1560-4 https://ora.ox.ac.uk/objects/uuid:9bf9e609-7fd9-4696-9b35-7456d535bd4a unknown doi:10.1007/s00382-012-1560-4 https://ora.ox.ac.uk/objects/uuid:9bf9e609-7fd9-4696-9b35-7456d535bd4a https://doi.org/10.1007/s00382-012-1560-4 info:eu-repo/semantics/embargoedAccess Journal article 2016 ftuloxford https://doi.org/10.1007/s00382-012-1560-4 2022-06-28T20:19:22Z A systematic analysis of the winter North Atlantic eddy-driven jet stream latitude and wind speed from 52 model integrations, taken from the coupled model intercomparison project phase 3, is carried out and compared to results obtained from the ERA-40 reanalyses. We consider here a control simulation, twentieth century simulation, and two time periods (2046-2065 and 2081-2100) from a twenty-first century, high-emission A2 forced simulation. The jet wind speed seasonality is found to be similar between the twentieth century simulations and the ERA-40 reanalyses and also between the control and forced simulations although nearly half of the models overestimate the amplitude of the seasonal cycle. A systematic equatorward bias of the models jet latitude seasonality, by up to 7°, is observed, and models additionally overestimate the seasonal cycle of jet latitude about the mean, with the majority of the models showing equatorward and poleward biases during the cold and warm seasons respectively. A main finding of this work is that no GCM under any forcing scenario considered here is able to simulate the trimodal behaviour of the observed jet latitude distribution. The models suffer from serious problems in the structure of jet variability, rather than just quantitiative errors in the statistical moments. © 2012 Springer-Verlag Berlin Heidelberg. Article in Journal/Newspaper North Atlantic ORA - Oxford University Research Archive Climate Dynamics 41 3-4 995 1007 |
institution |
Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
unknown |
description |
A systematic analysis of the winter North Atlantic eddy-driven jet stream latitude and wind speed from 52 model integrations, taken from the coupled model intercomparison project phase 3, is carried out and compared to results obtained from the ERA-40 reanalyses. We consider here a control simulation, twentieth century simulation, and two time periods (2046-2065 and 2081-2100) from a twenty-first century, high-emission A2 forced simulation. The jet wind speed seasonality is found to be similar between the twentieth century simulations and the ERA-40 reanalyses and also between the control and forced simulations although nearly half of the models overestimate the amplitude of the seasonal cycle. A systematic equatorward bias of the models jet latitude seasonality, by up to 7°, is observed, and models additionally overestimate the seasonal cycle of jet latitude about the mean, with the majority of the models showing equatorward and poleward biases during the cold and warm seasons respectively. A main finding of this work is that no GCM under any forcing scenario considered here is able to simulate the trimodal behaviour of the observed jet latitude distribution. The models suffer from serious problems in the structure of jet variability, rather than just quantitiative errors in the statistical moments. © 2012 Springer-Verlag Berlin Heidelberg. |
format |
Article in Journal/Newspaper |
author |
Hannachi, A Barnes, E Woollings, T |
spellingShingle |
Hannachi, A Barnes, E Woollings, T Behaviour of the winter North Atlantic eddy-driven jet stream in the CMIP3 integrations |
author_facet |
Hannachi, A Barnes, E Woollings, T |
author_sort |
Hannachi, A |
title |
Behaviour of the winter North Atlantic eddy-driven jet stream in the CMIP3 integrations |
title_short |
Behaviour of the winter North Atlantic eddy-driven jet stream in the CMIP3 integrations |
title_full |
Behaviour of the winter North Atlantic eddy-driven jet stream in the CMIP3 integrations |
title_fullStr |
Behaviour of the winter North Atlantic eddy-driven jet stream in the CMIP3 integrations |
title_full_unstemmed |
Behaviour of the winter North Atlantic eddy-driven jet stream in the CMIP3 integrations |
title_sort |
behaviour of the winter north atlantic eddy-driven jet stream in the cmip3 integrations |
publishDate |
2016 |
url |
https://doi.org/10.1007/s00382-012-1560-4 https://ora.ox.ac.uk/objects/uuid:9bf9e609-7fd9-4696-9b35-7456d535bd4a |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
doi:10.1007/s00382-012-1560-4 https://ora.ox.ac.uk/objects/uuid:9bf9e609-7fd9-4696-9b35-7456d535bd4a https://doi.org/10.1007/s00382-012-1560-4 |
op_rights |
info:eu-repo/semantics/embargoedAccess |
op_doi |
https://doi.org/10.1007/s00382-012-1560-4 |
container_title |
Climate Dynamics |
container_volume |
41 |
container_issue |
3-4 |
container_start_page |
995 |
op_container_end_page |
1007 |
_version_ |
1766127454775148544 |