The average influence of decadal solar forcing on the atmosphere in the South Pacific region
Composite mean difference analyses are applied to historical sea level pressure (SLP) and sea surface temperature (SST) data to investigate the spatial dependence of the Pacific climate system response to 11-year solar forcing. Previous work has found that the SST and SLP responses are most clearly...
Published in: | Geophysical Research Letters |
---|---|
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
2011
|
Subjects: | |
Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-673 https://doi.org/10.1029/2011GL047794 |
id |
ftncar:oai:drupal-site.org:articles_10851 |
---|---|
record_format |
openpolar |
spelling |
ftncar:oai:drupal-site.org:articles_10851 2023-09-05T13:13:39+02:00 The average influence of decadal solar forcing on the atmosphere in the South Pacific region vanLoon, Harry (author) Meehl, Gerald (author) 2011-06-25 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-673 https://doi.org/10.1029/2011GL047794 en eng American Geophysical Union Geophysical Research Letters http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-673 doi:10.1029/2011GL047794 wos: 000292107300002 ark:/85065/d7639q95 Copyright 2011 American Geophysical Union. Text article 2011 ftncar https://doi.org/10.1029/2011GL047794 2023-08-14T18:38:10Z Composite mean difference analyses are applied to historical sea level pressure (SLP) and sea surface temperature (SST) data to investigate the spatial dependence of the Pacific climate system response to 11-year solar forcing. Previous work has found that the SST and SLP responses are most clearly detected near the times of sunspot maxima, which occur as much as two years prior to the centers of the broad decadal solar cycle maxima. In January-February, the SLP response at sunspot maximum is nearly the same on either side of the equator, although the amplitude is larger in the winter hemisphere. The solar influence is seen as above normal SLP in the sub-Arctic Pacific, as found previously, and as corresponding positive SLP anomalies in the sub-Antarctic Pacific, as shown here for the first time. These SLP anomalies are associated with previously documented signals at sunspot maxima of greater ocean upwelling and cooling along the Pacific equator, and a poleward extension of the tropical convergence zones in both hemispheres. Previous studies using multiple linear regression methods show the broad decadal solar maxima being associated with the lagged warm response in equatorial Pacific SSTs seen in the composites, which is not inconsistent with the present results. In the South Pacific Ocean, the solar effect is visible in the southern summer in the year before the sunspot number peak. The SST and SLP anomalies in the South Pacific in the solar peaks differ markedly from those in Cold Events (La Ni*#241;a events) of the Southern Oscillation. Article in Journal/Newspaper Antarc* Antarctic Arctic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Antarctic Arctic Pacific Geophysical Research Letters 38 12 n/a n/a |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Composite mean difference analyses are applied to historical sea level pressure (SLP) and sea surface temperature (SST) data to investigate the spatial dependence of the Pacific climate system response to 11-year solar forcing. Previous work has found that the SST and SLP responses are most clearly detected near the times of sunspot maxima, which occur as much as two years prior to the centers of the broad decadal solar cycle maxima. In January-February, the SLP response at sunspot maximum is nearly the same on either side of the equator, although the amplitude is larger in the winter hemisphere. The solar influence is seen as above normal SLP in the sub-Arctic Pacific, as found previously, and as corresponding positive SLP anomalies in the sub-Antarctic Pacific, as shown here for the first time. These SLP anomalies are associated with previously documented signals at sunspot maxima of greater ocean upwelling and cooling along the Pacific equator, and a poleward extension of the tropical convergence zones in both hemispheres. Previous studies using multiple linear regression methods show the broad decadal solar maxima being associated with the lagged warm response in equatorial Pacific SSTs seen in the composites, which is not inconsistent with the present results. In the South Pacific Ocean, the solar effect is visible in the southern summer in the year before the sunspot number peak. The SST and SLP anomalies in the South Pacific in the solar peaks differ markedly from those in Cold Events (La Ni*#241;a events) of the Southern Oscillation. |
author2 |
vanLoon, Harry (author) Meehl, Gerald (author) |
format |
Article in Journal/Newspaper |
title |
The average influence of decadal solar forcing on the atmosphere in the South Pacific region |
spellingShingle |
The average influence of decadal solar forcing on the atmosphere in the South Pacific region |
title_short |
The average influence of decadal solar forcing on the atmosphere in the South Pacific region |
title_full |
The average influence of decadal solar forcing on the atmosphere in the South Pacific region |
title_fullStr |
The average influence of decadal solar forcing on the atmosphere in the South Pacific region |
title_full_unstemmed |
The average influence of decadal solar forcing on the atmosphere in the South Pacific region |
title_sort |
average influence of decadal solar forcing on the atmosphere in the south pacific region |
publisher |
American Geophysical Union |
publishDate |
2011 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-673 https://doi.org/10.1029/2011GL047794 |
geographic |
Antarctic Arctic Pacific |
geographic_facet |
Antarctic Arctic Pacific |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_relation |
Geophysical Research Letters http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-673 doi:10.1029/2011GL047794 wos: 000292107300002 ark:/85065/d7639q95 |
op_rights |
Copyright 2011 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2011GL047794 |
container_title |
Geophysical Research Letters |
container_volume |
38 |
container_issue |
12 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1776204848867311616 |