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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ftosti:oai:osti.gov:1565163 2023-07-30T04:06:50+02:00 Reconstruction of the South Atlantic Subtropical Dipole index for the past 12,000 years from surface temperature proxy Wainer, Ilana Prado, Luciana Figueiredo Khodri, Myriam Otto-Bliesner, Bette 2023-06-30 application/pdf http://www.osti.gov/servlets/purl/1565163 https://www.osti.gov/biblio/1565163 https://doi.org/10.1038/srep05291 unknown http://www.osti.gov/servlets/purl/1565163 https://www.osti.gov/biblio/1565163 https://doi.org/10.1038/srep05291 doi:10.1038/srep05291 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.1038/srep05291 2023-07-11T09:37:06Z 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. Other/Unknown Material South Atlantic Ocean SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Scientific Reports 4 1 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES Wainer, Ilana Prado, Luciana Figueiredo Khodri, Myriam Otto-Bliesner, Bette Reconstruction of the South Atlantic Subtropical Dipole index for the past 12,000 years from surface temperature proxy |
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54 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. |
author |
Wainer, Ilana Prado, Luciana Figueiredo Khodri, Myriam Otto-Bliesner, Bette |
author_facet |
Wainer, Ilana Prado, Luciana Figueiredo Khodri, Myriam Otto-Bliesner, Bette |
author_sort |
Wainer, Ilana |
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 |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1565163 https://www.osti.gov/biblio/1565163 https://doi.org/10.1038/srep05291 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
http://www.osti.gov/servlets/purl/1565163 https://www.osti.gov/biblio/1565163 https://doi.org/10.1038/srep05291 doi:10.1038/srep05291 |
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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1772819770152845312 |