Global sea-level budget 1993-present
Global mean sea level is an integral of changes occurring in the climate system in response to unforced climate variability as well as natural and anthropogenic forcing factors. Its temporal evolution allows changes (e.g., acceleration) to be detected in one or more components. Study of the sea-leve...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/202774 2024-01-14T10:02:20+01:00 Global sea-level budget 1993-present Cazenave, Anny Meyssignac, Benoit Ablain, Michaël Balmaseda, Magdalena Bamber, Jonathon Barletta, V R Beckley, Brian D Benvéniste, Jérôme Berthier, Etienne Blazquez, Alejandro Lambeck, Kurt Dangendorf, Sonke Mitchum, Gary T. Watson, Christopher Stephen 40 pages application/pdf http://hdl.handle.net/1885/202774 https://doi.org/10.5194/essd-10-1551-2018 https://openresearch-repository.anu.edu.au/bitstream/1885/202774/5/01_Cazenave_Global_sea-level_budget_2018.pdf.jpg en_AU eng Copernicus Publications 1866-3508 http://hdl.handle.net/1885/202774 doi:10.5194/essd-10-1551-2018 https://openresearch-repository.anu.edu.au/bitstream/1885/202774/5/01_Cazenave_Global_sea-level_budget_2018.pdf.jpg © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. https://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Earth System Science Data Journal article ftanucanberra https://doi.org/10.5194/essd-10-1551-2018 2023-12-15T09:36:18Z Global mean sea level is an integral of changes occurring in the climate system in response to unforced climate variability as well as natural and anthropogenic forcing factors. Its temporal evolution allows changes (e.g., acceleration) to be detected in one or more components. Study of the sea-level budget provides constraints on missing or poorly known contributions, such as the unsurveyed deep ocean or the still uncertain land water component. In the context of the World Climate Research Programme Grand Challenge entitled Regional Sea Level and Coastal Impacts, an international effort involving the sea-level community worldwide has been recently initiated with the objective of assessing the various datasets used to estimate components of the sea-level budget during the altimetry era (1993 to present). These datasets are based on the combination of a broad range of space-based and in situ observations, model estimates, and algorithms. Evaluating their quality, quantifying uncertainties and identifying sources of discrepancies between component estimates is extremely useful for various applications in climate research. This effort involves several tens of scientists from about 50 research teams/institutions worldwide (www.wcrp-climate.org/grand-challenges/gc-sea-level, last access: 22 August 2018). The results presented in this paper are a synthesis of the first assessment performed during 2017–2018. We present estimates of the altimetry-based global mean sea level (average rate of 3.1±0.3mmyr−1 and acceleration of 0.1mmyr−2 over 1993–present), as well as of the different components of the sea-level budget (http://doi.org/10.17882/54854, last access: 22 August 2018). We further examine closure of the sea-level budget, comparing the observed global mean sea level with the sum of components. Ocean thermal expansion, glaciers, Greenland and Antarctica contribute 42%, 21%, 15% and 8% to the global mean sea level over the 1993–present period. We also study the sea-level budget over 2005–present, using GRACE-based ... Article in Journal/Newspaper Antarc* Antarctica Greenland Australian National University: ANU Digital Collections Greenland Earth System Science Data 10 3 1551 1590 |
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Open Polar |
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Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
English |
description |
Global mean sea level is an integral of changes occurring in the climate system in response to unforced climate variability as well as natural and anthropogenic forcing factors. Its temporal evolution allows changes (e.g., acceleration) to be detected in one or more components. Study of the sea-level budget provides constraints on missing or poorly known contributions, such as the unsurveyed deep ocean or the still uncertain land water component. In the context of the World Climate Research Programme Grand Challenge entitled Regional Sea Level and Coastal Impacts, an international effort involving the sea-level community worldwide has been recently initiated with the objective of assessing the various datasets used to estimate components of the sea-level budget during the altimetry era (1993 to present). These datasets are based on the combination of a broad range of space-based and in situ observations, model estimates, and algorithms. Evaluating their quality, quantifying uncertainties and identifying sources of discrepancies between component estimates is extremely useful for various applications in climate research. This effort involves several tens of scientists from about 50 research teams/institutions worldwide (www.wcrp-climate.org/grand-challenges/gc-sea-level, last access: 22 August 2018). The results presented in this paper are a synthesis of the first assessment performed during 2017–2018. We present estimates of the altimetry-based global mean sea level (average rate of 3.1±0.3mmyr−1 and acceleration of 0.1mmyr−2 over 1993–present), as well as of the different components of the sea-level budget (http://doi.org/10.17882/54854, last access: 22 August 2018). We further examine closure of the sea-level budget, comparing the observed global mean sea level with the sum of components. Ocean thermal expansion, glaciers, Greenland and Antarctica contribute 42%, 21%, 15% and 8% to the global mean sea level over the 1993–present period. We also study the sea-level budget over 2005–present, using GRACE-based ... |
format |
Article in Journal/Newspaper |
author |
Cazenave, Anny Meyssignac, Benoit Ablain, Michaël Balmaseda, Magdalena Bamber, Jonathon Barletta, V R Beckley, Brian D Benvéniste, Jérôme Berthier, Etienne Blazquez, Alejandro Lambeck, Kurt Dangendorf, Sonke Mitchum, Gary T. Watson, Christopher Stephen |
spellingShingle |
Cazenave, Anny Meyssignac, Benoit Ablain, Michaël Balmaseda, Magdalena Bamber, Jonathon Barletta, V R Beckley, Brian D Benvéniste, Jérôme Berthier, Etienne Blazquez, Alejandro Lambeck, Kurt Dangendorf, Sonke Mitchum, Gary T. Watson, Christopher Stephen Global sea-level budget 1993-present |
author_facet |
Cazenave, Anny Meyssignac, Benoit Ablain, Michaël Balmaseda, Magdalena Bamber, Jonathon Barletta, V R Beckley, Brian D Benvéniste, Jérôme Berthier, Etienne Blazquez, Alejandro Lambeck, Kurt Dangendorf, Sonke Mitchum, Gary T. Watson, Christopher Stephen |
author_sort |
Cazenave, Anny |
title |
Global sea-level budget 1993-present |
title_short |
Global sea-level budget 1993-present |
title_full |
Global sea-level budget 1993-present |
title_fullStr |
Global sea-level budget 1993-present |
title_full_unstemmed |
Global sea-level budget 1993-present |
title_sort |
global sea-level budget 1993-present |
publisher |
Copernicus Publications |
url |
http://hdl.handle.net/1885/202774 https://doi.org/10.5194/essd-10-1551-2018 https://openresearch-repository.anu.edu.au/bitstream/1885/202774/5/01_Cazenave_Global_sea-level_budget_2018.pdf.jpg |
geographic |
Greenland |
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Greenland |
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Antarc* Antarctica Greenland |
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Antarc* Antarctica Greenland |
op_source |
Earth System Science Data |
op_relation |
1866-3508 http://hdl.handle.net/1885/202774 doi:10.5194/essd-10-1551-2018 https://openresearch-repository.anu.edu.au/bitstream/1885/202774/5/01_Cazenave_Global_sea-level_budget_2018.pdf.jpg |
op_rights |
© Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. https://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_doi |
https://doi.org/10.5194/essd-10-1551-2018 |
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Earth System Science Data |
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10 |
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3 |
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1551 |
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1590 |
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