Interactions between externally forced climate signals from sunspot peaks and the internally generated Pacific Decadal and North Atlantic Oscillations
When the Pacific Decadal Oscillation is in phase with the 11 year sunspot cycle, there are positive sea level pressure (SLP) anomalies in the Gulf of Alaska, nearly no anomalous zonal SLP gradient across the equatorial Pacific, and a mix of small positive and negative sea surface temperature (SST) a...
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Language: | English |
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ftncar:oai:drupal-site.org:articles_13346 2023-09-05T13:21:21+02:00 Interactions between externally forced climate signals from sunspot peaks and the internally generated Pacific Decadal and North Atlantic Oscillations Vanloon, Harry (author) Meehl, Gerald (author) 2014-01-16 http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-416 https://doi.org/10.1002/2013GL058670 en eng American Geophysical Union Geophysical Research Letters http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-416 doi:10.1002/2013GL058670 ark:/85065/d79s1rzw Copyright 2014 American Geophysical Union. Text article 2014 ftncar https://doi.org/10.1002/2013GL058670 2023-08-14T18:38:38Z When the Pacific Decadal Oscillation is in phase with the 11 year sunspot cycle, there are positive sea level pressure (SLP) anomalies in the Gulf of Alaska, nearly no anomalous zonal SLP gradient across the equatorial Pacific, and a mix of small positive and negative sea surface temperature (SST) anomalies there. When the two indices are out of phase, positive SLP anomalies extend farther south in the Gulf of Alaska and west into eastern Russia, with a strengthened anomalous zonal equatorial Pacific SLP gradient and larger magnitude and more extensive negative SST anomalies along the equatorial Pacific. In the North Atlantic, when the North Atlantic Oscillation (NAO) is in phase with the sunspot peaks, there is an intensified positive NAO SLP pattern. When the NAO is out of phase with the peaks, there is the opposite pattern (negative NAO). The relationships are physically consistent with previously identified processes and mechanisms and point the way to further research. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Alaska OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Gulf of Alaska Pacific Geophysical Research Letters 41 1 161 166 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
When the Pacific Decadal Oscillation is in phase with the 11 year sunspot cycle, there are positive sea level pressure (SLP) anomalies in the Gulf of Alaska, nearly no anomalous zonal SLP gradient across the equatorial Pacific, and a mix of small positive and negative sea surface temperature (SST) anomalies there. When the two indices are out of phase, positive SLP anomalies extend farther south in the Gulf of Alaska and west into eastern Russia, with a strengthened anomalous zonal equatorial Pacific SLP gradient and larger magnitude and more extensive negative SST anomalies along the equatorial Pacific. In the North Atlantic, when the North Atlantic Oscillation (NAO) is in phase with the sunspot peaks, there is an intensified positive NAO SLP pattern. When the NAO is out of phase with the peaks, there is the opposite pattern (negative NAO). The relationships are physically consistent with previously identified processes and mechanisms and point the way to further research. |
author2 |
Vanloon, Harry (author) Meehl, Gerald (author) |
format |
Article in Journal/Newspaper |
title |
Interactions between externally forced climate signals from sunspot peaks and the internally generated Pacific Decadal and North Atlantic Oscillations |
spellingShingle |
Interactions between externally forced climate signals from sunspot peaks and the internally generated Pacific Decadal and North Atlantic Oscillations |
title_short |
Interactions between externally forced climate signals from sunspot peaks and the internally generated Pacific Decadal and North Atlantic Oscillations |
title_full |
Interactions between externally forced climate signals from sunspot peaks and the internally generated Pacific Decadal and North Atlantic Oscillations |
title_fullStr |
Interactions between externally forced climate signals from sunspot peaks and the internally generated Pacific Decadal and North Atlantic Oscillations |
title_full_unstemmed |
Interactions between externally forced climate signals from sunspot peaks and the internally generated Pacific Decadal and North Atlantic Oscillations |
title_sort |
interactions between externally forced climate signals from sunspot peaks and the internally generated pacific decadal and north atlantic oscillations |
publisher |
American Geophysical Union |
publishDate |
2014 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-416 https://doi.org/10.1002/2013GL058670 |
geographic |
Gulf of Alaska Pacific |
geographic_facet |
Gulf of Alaska Pacific |
genre |
North Atlantic North Atlantic oscillation Alaska |
genre_facet |
North Atlantic North Atlantic oscillation Alaska |
op_relation |
Geophysical Research Letters http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-416 doi:10.1002/2013GL058670 ark:/85065/d79s1rzw |
op_rights |
Copyright 2014 American Geophysical Union. |
op_doi |
https://doi.org/10.1002/2013GL058670 |
container_title |
Geophysical Research Letters |
container_volume |
41 |
container_issue |
1 |
container_start_page |
161 |
op_container_end_page |
166 |
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1776201969754439680 |