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Global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015

Global mean sea level has experienced an unabated rise over the 20(th) century. This observed rise is due to both ocean warming and increasing continental freshwater discharge. We estimate the net ocean mass contribution to sea level by assessing the global ocean salt budget based on the unprecedent...

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Autores principales: Llovel, William, Purkey, S., Meyssignac, B., Blazquez, A., Kolodziejczyk, N., Bamber, J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6881399/
https://www.ncbi.nlm.nih.gov/pubmed/31776427
http://dx.doi.org/10.1038/s41598-019-54239-2
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author Llovel, William
Purkey, S.
Meyssignac, B.
Blazquez, A.
Kolodziejczyk, N.
Bamber, J.
author_facet Llovel, William
Purkey, S.
Meyssignac, B.
Blazquez, A.
Kolodziejczyk, N.
Bamber, J.
author_sort Llovel, William
collection PubMed
description Global mean sea level has experienced an unabated rise over the 20(th) century. This observed rise is due to both ocean warming and increasing continental freshwater discharge. We estimate the net ocean mass contribution to sea level by assessing the global ocean salt budget based on the unprecedented amount of in situ data over 2005–2015. We obtain the ocean mass trends of 1.30 ± 1.13 mm · yr(−1) (0–2000 m) and 1.55 ± 1.20 mm · yr(−1) (full depth). These new ocean mass trends are smaller by 0.63–0.88 mm · yr(−1) compared to the ocean mass trend estimated through the sea level budget approach. Our result provides an independent validation of Gravity Recovery And Climate Experiment (GRACE)-based ocean mass trend and, in addition, places an independent constraint on the combined Glacial Isostatic Adjustment – the Earth’s delayed viscoelastic response to the redistribution of mass that accompanied the last deglaciation- and geocenter variations needed to directly infer the ocean mass trend based on GRACE data.
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spelling pubmed-68813992019-12-06 Global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015 Llovel, William Purkey, S. Meyssignac, B. Blazquez, A. Kolodziejczyk, N. Bamber, J. Sci Rep Article Global mean sea level has experienced an unabated rise over the 20(th) century. This observed rise is due to both ocean warming and increasing continental freshwater discharge. We estimate the net ocean mass contribution to sea level by assessing the global ocean salt budget based on the unprecedented amount of in situ data over 2005–2015. We obtain the ocean mass trends of 1.30 ± 1.13 mm · yr(−1) (0–2000 m) and 1.55 ± 1.20 mm · yr(−1) (full depth). These new ocean mass trends are smaller by 0.63–0.88 mm · yr(−1) compared to the ocean mass trend estimated through the sea level budget approach. Our result provides an independent validation of Gravity Recovery And Climate Experiment (GRACE)-based ocean mass trend and, in addition, places an independent constraint on the combined Glacial Isostatic Adjustment – the Earth’s delayed viscoelastic response to the redistribution of mass that accompanied the last deglaciation- and geocenter variations needed to directly infer the ocean mass trend based on GRACE data. Nature Publishing Group UK 2019-11-27 /pmc/articles/PMC6881399/ /pubmed/31776427 http://dx.doi.org/10.1038/s41598-019-54239-2 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Llovel, William
Purkey, S.
Meyssignac, B.
Blazquez, A.
Kolodziejczyk, N.
Bamber, J.
Global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015
title Global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015
title_full Global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015
title_fullStr Global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015
title_full_unstemmed Global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015
title_short Global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015
title_sort global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6881399/
https://www.ncbi.nlm.nih.gov/pubmed/31776427
http://dx.doi.org/10.1038/s41598-019-54239-2
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