Reduced misclosure of global sea-level budget with updated Tongji-Grace2018 solution

Abstract The global sea-level budget is studied using the Gravity Recovery and Climate Experiment (GRACE) solutions, Satellite Altimetry and Argo observations based on the updated budget equation. When the global ocean mass change is estimated with the updated Tongji-Grace2018 solution, the misclosu...

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Autores principales:	Fengwei Wang, Yunzhong Shen, Qiujie Chen, Yu Sun
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ab37d4ccf47a407aa4baa98abbbbf27e
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spelling	oai:doaj.org-article:ab37d4ccf47a407aa4baa98abbbbf27e2021-12-02T17:51:16ZReduced misclosure of global sea-level budget with updated Tongji-Grace2018 solution10.1038/s41598-021-96880-w2045-2322https://doaj.org/article/ab37d4ccf47a407aa4baa98abbbbf27e2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96880-whttps://doaj.org/toc/2045-2322Abstract The global sea-level budget is studied using the Gravity Recovery and Climate Experiment (GRACE) solutions, Satellite Altimetry and Argo observations based on the updated budget equation. When the global ocean mass change is estimated with the updated Tongji-Grace2018 solution, the misclosure of the global sea-level budget can be reduced by 0.11–0.22 mm/year compared to four other recent solutions (i.e. CSR RL06, GFZ RL06, JPL RL06 and ITSG-Grace2018) over the period January 2005 to December 2016. When the same missing months as the GRACE solution are deleted from altimetry and Argo data, the misclosure will be reduced by 0.06 mm/year. Once retained the GRACE C20 term, the linear trends of Tongji-Grace2018 and ITSG-Grace2018 solutions are 2.60 ± 0.16 and 2.54 ± 0.16 mm/year, closer to 2.60 ± 0.14 mm/year from Altimetry–Argo than the three RL06 official solutions. Therefore, the Tongji-Grace2018 solution can reduce the misclosure between altimetry, Argo and GRACE data, regardless of whether the C20 term is replaced or not, since the low-degree spherical harmonic coefficients of the Tongji-Grace2018 solution can capture more ocean signals, which are confirmed by the statistical results of the time series of global mean ocean mass change derived from five GRACE solutions with the spherical harmonic coefficients truncated to different degrees and orders.Fengwei WangYunzhong ShenQiujie ChenYu SunNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fengwei Wang Yunzhong Shen Qiujie Chen Yu Sun Reduced misclosure of global sea-level budget with updated Tongji-Grace2018 solution
description	Abstract The global sea-level budget is studied using the Gravity Recovery and Climate Experiment (GRACE) solutions, Satellite Altimetry and Argo observations based on the updated budget equation. When the global ocean mass change is estimated with the updated Tongji-Grace2018 solution, the misclosure of the global sea-level budget can be reduced by 0.11–0.22 mm/year compared to four other recent solutions (i.e. CSR RL06, GFZ RL06, JPL RL06 and ITSG-Grace2018) over the period January 2005 to December 2016. When the same missing months as the GRACE solution are deleted from altimetry and Argo data, the misclosure will be reduced by 0.06 mm/year. Once retained the GRACE C20 term, the linear trends of Tongji-Grace2018 and ITSG-Grace2018 solutions are 2.60 ± 0.16 and 2.54 ± 0.16 mm/year, closer to 2.60 ± 0.14 mm/year from Altimetry–Argo than the three RL06 official solutions. Therefore, the Tongji-Grace2018 solution can reduce the misclosure between altimetry, Argo and GRACE data, regardless of whether the C20 term is replaced or not, since the low-degree spherical harmonic coefficients of the Tongji-Grace2018 solution can capture more ocean signals, which are confirmed by the statistical results of the time series of global mean ocean mass change derived from five GRACE solutions with the spherical harmonic coefficients truncated to different degrees and orders.
format	article
author	Fengwei Wang Yunzhong Shen Qiujie Chen Yu Sun
author_facet	Fengwei Wang Yunzhong Shen Qiujie Chen Yu Sun
author_sort	Fengwei Wang
title	Reduced misclosure of global sea-level budget with updated Tongji-Grace2018 solution
title_short	Reduced misclosure of global sea-level budget with updated Tongji-Grace2018 solution
title_full	Reduced misclosure of global sea-level budget with updated Tongji-Grace2018 solution
title_fullStr	Reduced misclosure of global sea-level budget with updated Tongji-Grace2018 solution
title_full_unstemmed	Reduced misclosure of global sea-level budget with updated Tongji-Grace2018 solution
title_sort	reduced misclosure of global sea-level budget with updated tongji-grace2018 solution
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ab37d4ccf47a407aa4baa98abbbbf27e
work_keys_str_mv	AT fengweiwang reducedmisclosureofglobalsealevelbudgetwithupdatedtongjigrace2018solution AT yunzhongshen reducedmisclosureofglobalsealevelbudgetwithupdatedtongjigrace2018solution AT qiujiechen reducedmisclosureofglobalsealevelbudgetwithupdatedtongjigrace2018solution AT yusun reducedmisclosureofglobalsealevelbudgetwithupdatedtongjigrace2018solution
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Reduced misclosure of global sea-level budget with updated Tongji-Grace2018 solution

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