Sea-Level Fingerprints Due to Present-Day Water Mass Redistribution in Observed Sea-Level Data

Satellite altimetry over the oceans shows that the rate of sea-level rise is far from uniform, with reported regional rates up to two to three times the global mean rate of rise of ~3.3 mm/year during the altimeter era. The mechanisms causing the regional variations in sea-level trends are dominated...

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Autores principales:	Lorena Moreira, Anny Cazenave, Anne Barnoud, Jianli Chen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sea level altimetry steric sea-level GRACE fingerprints Science Q
Acceso en línea:	https://doaj.org/article/cc7d68833960460fae07706d17cc33a0
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spelling	oai:doaj.org-article:cc7d68833960460fae07706d17cc33a02021-11-25T18:55:15ZSea-Level Fingerprints Due to Present-Day Water Mass Redistribution in Observed Sea-Level Data10.3390/rs132246672072-4292https://doaj.org/article/cc7d68833960460fae07706d17cc33a02021-11-01T00:00:00Zhttps://www.mdpi.com/2072-4292/13/22/4667https://doaj.org/toc/2072-4292Satellite altimetry over the oceans shows that the rate of sea-level rise is far from uniform, with reported regional rates up to two to three times the global mean rate of rise of ~3.3 mm/year during the altimeter era. The mechanisms causing the regional variations in sea-level trends are dominated by ocean temperature and salinity changes, and other processes such as ocean mass redistribution as well as solid Earth’s deformations and gravitational changes in response to past and ongoing mass redistributions caused by land ice melt and terrestrial water storage changes (respectively known as Glacial Isostatic Adjustment (GIA) and sea-level fingerprints). Here, we attempt to detect the spatial trend patterns of the fingerprints associated with present-day land ice melt and terrestrial water mass changes, using satellite altimetry-based sea-level grids corrected for the steric component. Although the signal-to-noise ratio is still very low, a statistically significant correlation between altimetry-based sea-level and modelled fingerprints is detected in some ocean regions. We also examine spatial trend patterns in observed GRACE ocean mass corrected for atmospheric and oceanic loading and find that some oceanic regions are dominated by the fingerprints of present-day water mass redistribution.Lorena MoreiraAnny CazenaveAnne BarnoudJianli ChenMDPI AGarticlesea levelaltimetrysteric sea-levelGRACEfingerprintsScienceQENRemote Sensing, Vol 13, Iss 4667, p 4667 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sea level altimetry steric sea-level GRACE fingerprints Science Q
spellingShingle	sea level altimetry steric sea-level GRACE fingerprints Science Q Lorena Moreira Anny Cazenave Anne Barnoud Jianli Chen Sea-Level Fingerprints Due to Present-Day Water Mass Redistribution in Observed Sea-Level Data
description	Satellite altimetry over the oceans shows that the rate of sea-level rise is far from uniform, with reported regional rates up to two to three times the global mean rate of rise of ~3.3 mm/year during the altimeter era. The mechanisms causing the regional variations in sea-level trends are dominated by ocean temperature and salinity changes, and other processes such as ocean mass redistribution as well as solid Earth’s deformations and gravitational changes in response to past and ongoing mass redistributions caused by land ice melt and terrestrial water storage changes (respectively known as Glacial Isostatic Adjustment (GIA) and sea-level fingerprints). Here, we attempt to detect the spatial trend patterns of the fingerprints associated with present-day land ice melt and terrestrial water mass changes, using satellite altimetry-based sea-level grids corrected for the steric component. Although the signal-to-noise ratio is still very low, a statistically significant correlation between altimetry-based sea-level and modelled fingerprints is detected in some ocean regions. We also examine spatial trend patterns in observed GRACE ocean mass corrected for atmospheric and oceanic loading and find that some oceanic regions are dominated by the fingerprints of present-day water mass redistribution.
format	article
author	Lorena Moreira Anny Cazenave Anne Barnoud Jianli Chen
author_facet	Lorena Moreira Anny Cazenave Anne Barnoud Jianli Chen
author_sort	Lorena Moreira
title	Sea-Level Fingerprints Due to Present-Day Water Mass Redistribution in Observed Sea-Level Data
title_short	Sea-Level Fingerprints Due to Present-Day Water Mass Redistribution in Observed Sea-Level Data
title_full	Sea-Level Fingerprints Due to Present-Day Water Mass Redistribution in Observed Sea-Level Data
title_fullStr	Sea-Level Fingerprints Due to Present-Day Water Mass Redistribution in Observed Sea-Level Data
title_full_unstemmed	Sea-Level Fingerprints Due to Present-Day Water Mass Redistribution in Observed Sea-Level Data
title_sort	sea-level fingerprints due to present-day water mass redistribution in observed sea-level data
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/cc7d68833960460fae07706d17cc33a0
work_keys_str_mv	AT lorenamoreira sealevelfingerprintsduetopresentdaywatermassredistributioninobservedsealeveldata AT annycazenave sealevelfingerprintsduetopresentdaywatermassredistributioninobservedsealeveldata AT annebarnoud sealevelfingerprintsduetopresentdaywatermassredistributioninobservedsealeveldata AT jianlichen sealevelfingerprintsduetopresentdaywatermassredistributioninobservedsealeveldata
_version_	1718410554098319360

Sea-Level Fingerprints Due to Present-Day Water Mass Redistribution in Observed Sea-Level Data

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