Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice
Over the last 40 years observations show a teleconnection between summertime Pacific Ocean sea surface temperatures and September Arctic sea ice extent. However, the short satellite observation record has made it difficult to further examine this relationship. Here, we use 30 fully coupled general c...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
2020
|
Subjects: | |
Online Access: | https://authors.library.caltech.edu/101987/ https://authors.library.caltech.edu/101987/1/2019GL085666.pdf https://authors.library.caltech.edu/101987/2/grl60083-sup-0001-figure_si-s01.pdf https://resolver.caltech.edu/CaltechAUTHORS:20200319-082506230 |
id |
ftcaltechauth:oai:authors.library.caltech.edu:101987 |
---|---|
record_format |
openpolar |
spelling |
ftcaltechauth:oai:authors.library.caltech.edu:101987 2023-05-15T14:26:15+02:00 Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice Bonan, D. B. Blanchard‐Wrigglesworth, E. 2020-01-28 application/pdf https://authors.library.caltech.edu/101987/ https://authors.library.caltech.edu/101987/1/2019GL085666.pdf https://authors.library.caltech.edu/101987/2/grl60083-sup-0001-figure_si-s01.pdf https://resolver.caltech.edu/CaltechAUTHORS:20200319-082506230 en eng American Geophysical Union https://authors.library.caltech.edu/101987/1/2019GL085666.pdf https://authors.library.caltech.edu/101987/2/grl60083-sup-0001-figure_si-s01.pdf Bonan, D. B. and Blanchard‐Wrigglesworth, E. (2020) Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice. Geophysical Research Letters, 47 (2). Art. No. e2019GL085666. ISSN 0094-8276. doi:10.1029/2019gl085666. https://resolver.caltech.edu/CaltechAUTHORS:20200319-082506230 <https://resolver.caltech.edu/CaltechAUTHORS:20200319-082506230> other Article PeerReviewed 2020 ftcaltechauth https://doi.org/10.1029/2019gl085666 2021-11-18T18:54:30Z Over the last 40 years observations show a teleconnection between summertime Pacific Ocean sea surface temperatures and September Arctic sea ice extent. However, the short satellite observation record has made it difficult to further examine this relationship. Here, we use 30 fully coupled general circulation models (GCMs) participating in Phase 5 of the Coupled Model Intercomparison Project to assess the ability of GCMs to simulate this teleconnection and analyze its stationarity over longer timescales. GCMs can temporarily simulate the teleconnection in continuous 40‐year segments but not over longer, centennial timescales. Each GCM exhibits considerable teleconnection variability on multidecadal timescales. Further analysis shows that the teleconnection depends on an equally nonstationary atmospheric bridge from the subequatorial Pacific Ocean to the upper Arctic troposphere. These findings indicate that the modulation of Arctic sea ice loss by subequatorial Pacific Ocean variability is not fixed in time, undermining the assumption of teleconnection stationarity as defined by the satellite record. Article in Journal/Newspaper Arctic Arctic Sea ice Caltech Authors (California Institute of Technology) Arctic Pacific Geophysical Research Letters 47 2 |
institution |
Open Polar |
collection |
Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
English |
description |
Over the last 40 years observations show a teleconnection between summertime Pacific Ocean sea surface temperatures and September Arctic sea ice extent. However, the short satellite observation record has made it difficult to further examine this relationship. Here, we use 30 fully coupled general circulation models (GCMs) participating in Phase 5 of the Coupled Model Intercomparison Project to assess the ability of GCMs to simulate this teleconnection and analyze its stationarity over longer timescales. GCMs can temporarily simulate the teleconnection in continuous 40‐year segments but not over longer, centennial timescales. Each GCM exhibits considerable teleconnection variability on multidecadal timescales. Further analysis shows that the teleconnection depends on an equally nonstationary atmospheric bridge from the subequatorial Pacific Ocean to the upper Arctic troposphere. These findings indicate that the modulation of Arctic sea ice loss by subequatorial Pacific Ocean variability is not fixed in time, undermining the assumption of teleconnection stationarity as defined by the satellite record. |
format |
Article in Journal/Newspaper |
author |
Bonan, D. B. Blanchard‐Wrigglesworth, E. |
spellingShingle |
Bonan, D. B. Blanchard‐Wrigglesworth, E. Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice |
author_facet |
Bonan, D. B. Blanchard‐Wrigglesworth, E. |
author_sort |
Bonan, D. B. |
title |
Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice |
title_short |
Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice |
title_full |
Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice |
title_fullStr |
Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice |
title_full_unstemmed |
Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice |
title_sort |
nonstationary teleconnection between the pacific ocean and arctic sea ice |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
https://authors.library.caltech.edu/101987/ https://authors.library.caltech.edu/101987/1/2019GL085666.pdf https://authors.library.caltech.edu/101987/2/grl60083-sup-0001-figure_si-s01.pdf https://resolver.caltech.edu/CaltechAUTHORS:20200319-082506230 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Arctic Sea ice |
genre_facet |
Arctic Arctic Sea ice |
op_relation |
https://authors.library.caltech.edu/101987/1/2019GL085666.pdf https://authors.library.caltech.edu/101987/2/grl60083-sup-0001-figure_si-s01.pdf Bonan, D. B. and Blanchard‐Wrigglesworth, E. (2020) Nonstationary Teleconnection Between the Pacific Ocean and Arctic Sea Ice. Geophysical Research Letters, 47 (2). Art. No. e2019GL085666. ISSN 0094-8276. doi:10.1029/2019gl085666. https://resolver.caltech.edu/CaltechAUTHORS:20200319-082506230 <https://resolver.caltech.edu/CaltechAUTHORS:20200319-082506230> |
op_rights |
other |
op_doi |
https://doi.org/10.1029/2019gl085666 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
2 |
_version_ |
1766298727108050944 |