Observed decadal tropical Pacific-North Atlantic teleconnections
Observations of the last century are considered to investigate the decadal scale Pacific/North Atlantic teleconnections. By using wavelet analysis we find a significant low-frequency coherency between major indices of climate variability. In particular, at periods between 10 and 20 yr, the North Atl...
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ftpubman:oai:pure.mpg.de:item_994258 2023-08-27T04:03:43+02:00 Observed decadal tropical Pacific-North Atlantic teleconnections Mueller, W. Frankignoul, C. Chouaib, N. 2008 application/pdf http://hdl.handle.net/11858/00-001M-0000-0011-FA66-0 http://hdl.handle.net/11858/00-001M-0000-0011-FA65-1 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL035901 http://hdl.handle.net/11858/00-001M-0000-0011-FA66-0 http://hdl.handle.net/11858/00-001M-0000-0011-FA65-1 info:eu-repo/semantics/openAccess Geophysical Research Letters info:eu-repo/semantics/article 2008 ftpubman https://doi.org/10.1029/2008GL035901 2023-08-02T01:34:53Z Observations of the last century are considered to investigate the decadal scale Pacific/North Atlantic teleconnections. By using wavelet analysis we find a significant low-frequency coherency between major indices of climate variability. In particular, at periods between 10 and 20 yr, the North Atlantic Oscillation (NAO) tends to be out of phase with the El Nino/Southern Oscillation (ENSO) (strong Icelandic low during La Nina) and the Pacific Decadal Oscillation (PDO), but in phase with the North Pacific Index (NPI). Hence, the Icelandic low is strong during La Nina, but the Aleutian low is weak. The band-pass SST pattern shows a close relationship between the "decadal-ENSO'' mode in the Pacific and the sea surface temperature anomaly tripole in the Atlantic, consistent with the low-frequency global teleconnections. The spatial sea level patterns corresponding to the band-pass filtered indices suggest that the Aleutian-Icelandic Low seesaw is a main interbasin link on decadal time scale, consistent with the larger coherency of the NPI with the NAO than with ENSO. Article in Journal/Newspaper aleutian low North Atlantic North Atlantic oscillation Max Planck Society: MPG.PuRe Pacific Geophysical Research Letters 35 24 |
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Open Polar |
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Max Planck Society: MPG.PuRe |
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ftpubman |
language |
English |
description |
Observations of the last century are considered to investigate the decadal scale Pacific/North Atlantic teleconnections. By using wavelet analysis we find a significant low-frequency coherency between major indices of climate variability. In particular, at periods between 10 and 20 yr, the North Atlantic Oscillation (NAO) tends to be out of phase with the El Nino/Southern Oscillation (ENSO) (strong Icelandic low during La Nina) and the Pacific Decadal Oscillation (PDO), but in phase with the North Pacific Index (NPI). Hence, the Icelandic low is strong during La Nina, but the Aleutian low is weak. The band-pass SST pattern shows a close relationship between the "decadal-ENSO'' mode in the Pacific and the sea surface temperature anomaly tripole in the Atlantic, consistent with the low-frequency global teleconnections. The spatial sea level patterns corresponding to the band-pass filtered indices suggest that the Aleutian-Icelandic Low seesaw is a main interbasin link on decadal time scale, consistent with the larger coherency of the NPI with the NAO than with ENSO. |
format |
Article in Journal/Newspaper |
author |
Mueller, W. Frankignoul, C. Chouaib, N. |
spellingShingle |
Mueller, W. Frankignoul, C. Chouaib, N. Observed decadal tropical Pacific-North Atlantic teleconnections |
author_facet |
Mueller, W. Frankignoul, C. Chouaib, N. |
author_sort |
Mueller, W. |
title |
Observed decadal tropical Pacific-North Atlantic teleconnections |
title_short |
Observed decadal tropical Pacific-North Atlantic teleconnections |
title_full |
Observed decadal tropical Pacific-North Atlantic teleconnections |
title_fullStr |
Observed decadal tropical Pacific-North Atlantic teleconnections |
title_full_unstemmed |
Observed decadal tropical Pacific-North Atlantic teleconnections |
title_sort |
observed decadal tropical pacific-north atlantic teleconnections |
publishDate |
2008 |
url |
http://hdl.handle.net/11858/00-001M-0000-0011-FA66-0 http://hdl.handle.net/11858/00-001M-0000-0011-FA65-1 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
aleutian low North Atlantic North Atlantic oscillation |
genre_facet |
aleutian low North Atlantic North Atlantic oscillation |
op_source |
Geophysical Research Letters |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL035901 http://hdl.handle.net/11858/00-001M-0000-0011-FA66-0 http://hdl.handle.net/11858/00-001M-0000-0011-FA65-1 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2008GL035901 |
container_title |
Geophysical Research Letters |
container_volume |
35 |
container_issue |
24 |
_version_ |
1775346547918110720 |