Recent weakening in the winter ENSO teleconnection over the North Atlantic‑European region
New observational evidence for variability of the atmospheric response to wintertime El Niño-Southern Oscillation (ENSO) is found. Using different approaches and datasets, a weakening in the recent ENSO teleconnection over the North Atlantic-European (NAE) region is demonstrated. Changes in both pat...
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ftunivbergen:oai:bora.uib.no:11250/2986591 2023-05-15T15:05:21+02:00 Recent weakening in the winter ENSO teleconnection over the North Atlantic‑European region Ivasic, Sara Herceg-Bulic, Ivana King, Martin Peter 2021 application/pdf https://hdl.handle.net/11250/2986591 https://doi.org/10.1007/s00382-021-05783-z eng eng Springer https://link.springer.com/article/10.1007%2Fs00382-021-05783-z Norges forskningsråd: 275268 Notur/NorStore: NS9039K Norges forskningsråd: 255027 Notur/NorStore: NS9001K urn:issn:0930-7575 https://hdl.handle.net/11250/2986591 https://doi.org/10.1007/s00382-021-05783-z cristin:1908204 Climate Dynamics. 2021, 57, 1953-1972. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright The Author(s) 2021 Climate Dynamics 1953-1972 57 Journal article Peer reviewed 2021 ftunivbergen https://doi.org/10.1007/s00382-021-05783-z 2023-03-14T17:39:40Z New observational evidence for variability of the atmospheric response to wintertime El Niño-Southern Oscillation (ENSO) is found. Using different approaches and datasets, a weakening in the recent ENSO teleconnection over the North Atlantic-European (NAE) region is demonstrated. Changes in both pattern and strength of the teleconnection indicate a turning point in the 1970s with a shift from a response resembling the North Atlantic Oscillation (NAO) to an anomaly pattern orthogonal to NAO with very weak or statistically non-significant values; and to nearly non-existent teleconnection in the most recent decades. Results shows the importance of the background sea surface temperature (SST) state and sea-ice climatology having opposite effects in modulating the ENSO-NAE teleconnection. As indicated with targeted simulations, the recent change in the SST climatology in the Atlantic and Arctic has contributed to the weakening of the ENSO effect. The findings of this study can have implications on our understanding of modulations of ENSO teleconnections and ENSO as a source of predictability in the NAE sector. publishedVersion Article in Journal/Newspaper Arctic North Atlantic North Atlantic oscillation Sea ice University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Climate Dynamics 57 7-8 1953 1972 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
New observational evidence for variability of the atmospheric response to wintertime El Niño-Southern Oscillation (ENSO) is found. Using different approaches and datasets, a weakening in the recent ENSO teleconnection over the North Atlantic-European (NAE) region is demonstrated. Changes in both pattern and strength of the teleconnection indicate a turning point in the 1970s with a shift from a response resembling the North Atlantic Oscillation (NAO) to an anomaly pattern orthogonal to NAO with very weak or statistically non-significant values; and to nearly non-existent teleconnection in the most recent decades. Results shows the importance of the background sea surface temperature (SST) state and sea-ice climatology having opposite effects in modulating the ENSO-NAE teleconnection. As indicated with targeted simulations, the recent change in the SST climatology in the Atlantic and Arctic has contributed to the weakening of the ENSO effect. The findings of this study can have implications on our understanding of modulations of ENSO teleconnections and ENSO as a source of predictability in the NAE sector. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Ivasic, Sara Herceg-Bulic, Ivana King, Martin Peter |
spellingShingle |
Ivasic, Sara Herceg-Bulic, Ivana King, Martin Peter Recent weakening in the winter ENSO teleconnection over the North Atlantic‑European region |
author_facet |
Ivasic, Sara Herceg-Bulic, Ivana King, Martin Peter |
author_sort |
Ivasic, Sara |
title |
Recent weakening in the winter ENSO teleconnection over the North Atlantic‑European region |
title_short |
Recent weakening in the winter ENSO teleconnection over the North Atlantic‑European region |
title_full |
Recent weakening in the winter ENSO teleconnection over the North Atlantic‑European region |
title_fullStr |
Recent weakening in the winter ENSO teleconnection over the North Atlantic‑European region |
title_full_unstemmed |
Recent weakening in the winter ENSO teleconnection over the North Atlantic‑European region |
title_sort |
recent weakening in the winter enso teleconnection over the north atlantic‑european region |
publisher |
Springer |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2986591 https://doi.org/10.1007/s00382-021-05783-z |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Arctic North Atlantic North Atlantic oscillation Sea ice |
op_source |
Climate Dynamics 1953-1972 57 |
op_relation |
https://link.springer.com/article/10.1007%2Fs00382-021-05783-z Norges forskningsråd: 275268 Notur/NorStore: NS9039K Norges forskningsråd: 255027 Notur/NorStore: NS9001K urn:issn:0930-7575 https://hdl.handle.net/11250/2986591 https://doi.org/10.1007/s00382-021-05783-z cristin:1908204 Climate Dynamics. 2021, 57, 1953-1972. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright The Author(s) 2021 |
op_doi |
https://doi.org/10.1007/s00382-021-05783-z |
container_title |
Climate Dynamics |
container_volume |
57 |
container_issue |
7-8 |
container_start_page |
1953 |
op_container_end_page |
1972 |
_version_ |
1766337057549975552 |