Reconstruction of the South Atlantic subtropical dipole index for the past 12,000 years from surface temperature proxy
Climate indices based on sea surface temperature (SST) can synthesize information related to physical processes that describe change and variability in continental precipitation from floods to droughts. The South Atlantic Subtropical Dipole index (SASD) is based on the distribution of SST in the Sou...
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ftncar:oai:drupal-site.org:articles_14134 2023-09-05T13:23:10+02:00 Reconstruction of the South Atlantic subtropical dipole index for the past 12,000 years from surface temperature proxy Wainer, Ilana (author) Figueiredo Prado, Luciana (author) Khodri, Myriam (author) Otto-Bliesner, Bette (author) 2014-06-13 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-634 https://doi.org/10.1038/srep05291 en eng Nature Publishing Group Scientific Reports http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-634 doi:10.1038/srep05291 ark:/85065/d7sx6f6x Copyright Author(s) 2014. This work is distributed under the Creative Commons Attribution 3.0 License. Palaeoclimate Environmental sciences Text article 2014 ftncar https://doi.org/10.1038/srep05291 2023-08-14T18:41:17Z Climate indices based on sea surface temperature (SST) can synthesize information related to physical processes that describe change and variability in continental precipitation from floods to droughts. The South Atlantic Subtropical Dipole index (SASD) is based on the distribution of SST in the South Atlantic and fits these criteria. It represents the dominant mode of variability of SST in the South Atlantic, which is modulated by changes in the position and intensity of the South Atlantic Subtropical High. Here we reconstructed an index of the South Atlantic Ocean SST (SASD-like) for the past twelve thousand years (the Holocene period) based on proxy-data. This has great scientific implications and important socio-economic ramifications because of its ability to infer variability of precipitation and moisture over South America where past climate data is limited. For the first time a reconstructed index based on proxy data on opposite sides of the SASD-like mode is able to capture, in the South Atlantic, the significant cold events in the Northern Hemisphere at 12.9-11.6 kyr BP and 8.6−8.0 ky BP. These events are related, using a transient model simulation, to precipitation changes over South America. Article in Journal/Newspaper South Atlantic Ocean OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Scientific Reports 4 1 |
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Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
topic |
Palaeoclimate Environmental sciences |
spellingShingle |
Palaeoclimate Environmental sciences Reconstruction of the South Atlantic subtropical dipole index for the past 12,000 years from surface temperature proxy |
topic_facet |
Palaeoclimate Environmental sciences |
description |
Climate indices based on sea surface temperature (SST) can synthesize information related to physical processes that describe change and variability in continental precipitation from floods to droughts. The South Atlantic Subtropical Dipole index (SASD) is based on the distribution of SST in the South Atlantic and fits these criteria. It represents the dominant mode of variability of SST in the South Atlantic, which is modulated by changes in the position and intensity of the South Atlantic Subtropical High. Here we reconstructed an index of the South Atlantic Ocean SST (SASD-like) for the past twelve thousand years (the Holocene period) based on proxy-data. This has great scientific implications and important socio-economic ramifications because of its ability to infer variability of precipitation and moisture over South America where past climate data is limited. For the first time a reconstructed index based on proxy data on opposite sides of the SASD-like mode is able to capture, in the South Atlantic, the significant cold events in the Northern Hemisphere at 12.9-11.6 kyr BP and 8.6−8.0 ky BP. These events are related, using a transient model simulation, to precipitation changes over South America. |
author2 |
Wainer, Ilana (author) Figueiredo Prado, Luciana (author) Khodri, Myriam (author) Otto-Bliesner, Bette (author) |
format |
Article in Journal/Newspaper |
title |
Reconstruction of the South Atlantic subtropical dipole index for the past 12,000 years from surface temperature proxy |
title_short |
Reconstruction of the South Atlantic subtropical dipole index for the past 12,000 years from surface temperature proxy |
title_full |
Reconstruction of the South Atlantic subtropical dipole index for the past 12,000 years from surface temperature proxy |
title_fullStr |
Reconstruction of the South Atlantic subtropical dipole index for the past 12,000 years from surface temperature proxy |
title_full_unstemmed |
Reconstruction of the South Atlantic subtropical dipole index for the past 12,000 years from surface temperature proxy |
title_sort |
reconstruction of the south atlantic subtropical dipole index for the past 12,000 years from surface temperature proxy |
publisher |
Nature Publishing Group |
publishDate |
2014 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-634 https://doi.org/10.1038/srep05291 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
Scientific Reports http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-020-634 doi:10.1038/srep05291 ark:/85065/d7sx6f6x |
op_rights |
Copyright Author(s) 2014. This work is distributed under the Creative Commons Attribution 3.0 License. |
op_doi |
https://doi.org/10.1038/srep05291 |
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Scientific Reports |
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4 |
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1 |
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1776203741092904960 |