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

Abstract Global mean sea level has experienced an unabated rise over the 20th 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 unpr...

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Autores principales:	William Llovel, S. Purkey, B. Meyssignac, A. Blazquez, N. Kolodziejczyk, J. Bamber
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/077d720b080d44708358bdcdf4f2ccc7
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spelling	oai:doaj.org-article:077d720b080d44708358bdcdf4f2ccc72021-12-02T15:08:46ZGlobal ocean freshening, ocean mass increase and global mean sea level rise over 2005–201510.1038/s41598-019-54239-22045-2322https://doaj.org/article/077d720b080d44708358bdcdf4f2ccc72019-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-54239-2https://doaj.org/toc/2045-2322Abstract Global mean sea level has experienced an unabated rise over the 20th 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.William LlovelS. PurkeyB. MeyssignacA. BlazquezN. KolodziejczykJ. BamberNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-10 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q William Llovel S. Purkey B. Meyssignac A. Blazquez N. Kolodziejczyk J. Bamber Global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015
description	Abstract Global mean sea level has experienced an unabated rise over the 20th 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.
format	article
author	William Llovel S. Purkey B. Meyssignac A. Blazquez N. Kolodziejczyk J. Bamber
author_facet	William Llovel S. Purkey B. Meyssignac A. Blazquez N. Kolodziejczyk J. Bamber
author_sort	William Llovel
title	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_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_sort	global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/077d720b080d44708358bdcdf4f2ccc7
work_keys_str_mv	AT williamllovel globaloceanfresheningoceanmassincreaseandglobalmeansealevelriseover20052015 AT spurkey globaloceanfresheningoceanmassincreaseandglobalmeansealevelriseover20052015 AT bmeyssignac globaloceanfresheningoceanmassincreaseandglobalmeansealevelriseover20052015 AT ablazquez globaloceanfresheningoceanmassincreaseandglobalmeansealevelriseover20052015 AT nkolodziejczyk globaloceanfresheningoceanmassincreaseandglobalmeansealevelriseover20052015 AT jbamber globaloceanfresheningoceanmassincreaseandglobalmeansealevelriseover20052015
_version_	1718387981398573056

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

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