Persistent acceleration in global sea-level rise since the 1960s
Previous studies reconstructed twentieth-century global mean sea level (GMSL) from sparse tide-gauge records to understand whether the recent high rates obtained from satellite altimetry are part of a longer-term acceleration. However, these analyses used techniques that can only accurately capture...
Published in: | Nature Climate Change |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2019
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/525251/ https://nora.nerc.ac.uk/id/eprint/525251/1/s41558-019-0531-8.pdf https://doi.org/10.1038/s41558-019-0531-8 |
id |
ftnerc:oai:nora.nerc.ac.uk:525251 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:525251 2023-05-15T18:25:20+02:00 Persistent acceleration in global sea-level rise since the 1960s Dangendorf, Sönke Hay, Carling Mir Calafat, Francisco Marcos, Marta Piecuch, Christopher G. Berk, Kevin Jensen, Jürgen 2019-08-05 text http://nora.nerc.ac.uk/id/eprint/525251/ https://nora.nerc.ac.uk/id/eprint/525251/1/s41558-019-0531-8.pdf https://doi.org/10.1038/s41558-019-0531-8 en eng https://nora.nerc.ac.uk/id/eprint/525251/1/s41558-019-0531-8.pdf Dangendorf, Sönke; Hay, Carling; Mir Calafat, Francisco orcid:0000-0002-7474-135X Marcos, Marta; Piecuch, Christopher G.; Berk, Kevin; Jensen, Jürgen. 2019 Persistent acceleration in global sea-level rise since the 1960s. Nature Climate Change, 9 (9). 705-710. https://doi.org/10.1038/s41558-019-0531-8 <https://doi.org/10.1038/s41558-019-0531-8> cc_by_4 CC-BY Publication - Article PeerReviewed 2019 ftnerc https://doi.org/10.1038/s41558-019-0531-8 2023-02-04T19:49:18Z Previous studies reconstructed twentieth-century global mean sea level (GMSL) from sparse tide-gauge records to understand whether the recent high rates obtained from satellite altimetry are part of a longer-term acceleration. However, these analyses used techniques that can only accurately capture either the trend or the variability in GMSL, but not both. Here we present an improved hybrid sea-level reconstruction during 1900–2015 that combines previous techniques at time scales where they perform best. We find a persistent acceleration in GMSL since the 1960s and demonstrate that this is largely (~76%) associated with sea-level changes in the Indo-Pacific and South Atlantic. We show that the initiation of the acceleration in the 1960s is tightly linked to an intensification and a basin-scale equatorward shift of Southern Hemispheric westerlies, leading to increased ocean heat uptake, and hence greater rates of GMSL rise, through changes in the circulation of the Southern Ocean. Article in Journal/Newspaper Southern Ocean Natural Environment Research Council: NERC Open Research Archive Southern Ocean Pacific Nature Climate Change 9 9 705 710 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Previous studies reconstructed twentieth-century global mean sea level (GMSL) from sparse tide-gauge records to understand whether the recent high rates obtained from satellite altimetry are part of a longer-term acceleration. However, these analyses used techniques that can only accurately capture either the trend or the variability in GMSL, but not both. Here we present an improved hybrid sea-level reconstruction during 1900–2015 that combines previous techniques at time scales where they perform best. We find a persistent acceleration in GMSL since the 1960s and demonstrate that this is largely (~76%) associated with sea-level changes in the Indo-Pacific and South Atlantic. We show that the initiation of the acceleration in the 1960s is tightly linked to an intensification and a basin-scale equatorward shift of Southern Hemispheric westerlies, leading to increased ocean heat uptake, and hence greater rates of GMSL rise, through changes in the circulation of the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Dangendorf, Sönke Hay, Carling Mir Calafat, Francisco Marcos, Marta Piecuch, Christopher G. Berk, Kevin Jensen, Jürgen |
spellingShingle |
Dangendorf, Sönke Hay, Carling Mir Calafat, Francisco Marcos, Marta Piecuch, Christopher G. Berk, Kevin Jensen, Jürgen Persistent acceleration in global sea-level rise since the 1960s |
author_facet |
Dangendorf, Sönke Hay, Carling Mir Calafat, Francisco Marcos, Marta Piecuch, Christopher G. Berk, Kevin Jensen, Jürgen |
author_sort |
Dangendorf, Sönke |
title |
Persistent acceleration in global sea-level rise since the 1960s |
title_short |
Persistent acceleration in global sea-level rise since the 1960s |
title_full |
Persistent acceleration in global sea-level rise since the 1960s |
title_fullStr |
Persistent acceleration in global sea-level rise since the 1960s |
title_full_unstemmed |
Persistent acceleration in global sea-level rise since the 1960s |
title_sort |
persistent acceleration in global sea-level rise since the 1960s |
publishDate |
2019 |
url |
http://nora.nerc.ac.uk/id/eprint/525251/ https://nora.nerc.ac.uk/id/eprint/525251/1/s41558-019-0531-8.pdf https://doi.org/10.1038/s41558-019-0531-8 |
geographic |
Southern Ocean Pacific |
geographic_facet |
Southern Ocean Pacific |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/525251/1/s41558-019-0531-8.pdf Dangendorf, Sönke; Hay, Carling; Mir Calafat, Francisco orcid:0000-0002-7474-135X Marcos, Marta; Piecuch, Christopher G.; Berk, Kevin; Jensen, Jürgen. 2019 Persistent acceleration in global sea-level rise since the 1960s. Nature Climate Change, 9 (9). 705-710. https://doi.org/10.1038/s41558-019-0531-8 <https://doi.org/10.1038/s41558-019-0531-8> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41558-019-0531-8 |
container_title |
Nature Climate Change |
container_volume |
9 |
container_issue |
9 |
container_start_page |
705 |
op_container_end_page |
710 |
_version_ |
1766206699008425984 |