The Eastern Mediterranean Sea mean sea level decadal slowdown: the effects of the water budget

This paper analyses the decadal variability of the Mean Sea Level (MSL) trend for the Mediterranean Sea and three subregions using a combination of satellite altimetry, tide gauges and reanalyses datasets for the past 30 years (1993–2022). These estimates indicate a decadal variability of the MSL ac...

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Main Authors: Federica Borile, Nadia Pinardi, Vladyslav Lyubartsev, Mahmud Hasan Ghani, Antonio Navarra, Jacopo Alessandri, Emanuela Clementi, Giovanni Coppini, Lorenzo Mentaschi, Giorgia Verri, Vladimir Santos da Costa, Enrico Scoccimarro, Francesco Misurale, Antonio Novellino, Paolo Oddo
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-02-01
Series:Frontiers in Climate
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Online Access:https://www.frontiersin.org/articles/10.3389/fclim.2025.1472731/full
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author Federica Borile
Nadia Pinardi
Nadia Pinardi
Vladyslav Lyubartsev
Mahmud Hasan Ghani
Antonio Navarra
Antonio Navarra
Jacopo Alessandri
Emanuela Clementi
Giovanni Coppini
Lorenzo Mentaschi
Giorgia Verri
Vladimir Santos da Costa
Enrico Scoccimarro
Francesco Misurale
Antonio Novellino
Paolo Oddo
author_facet Federica Borile
Nadia Pinardi
Nadia Pinardi
Vladyslav Lyubartsev
Mahmud Hasan Ghani
Antonio Navarra
Antonio Navarra
Jacopo Alessandri
Emanuela Clementi
Giovanni Coppini
Lorenzo Mentaschi
Giorgia Verri
Vladimir Santos da Costa
Enrico Scoccimarro
Francesco Misurale
Antonio Novellino
Paolo Oddo
author_sort Federica Borile
collection DOAJ
description This paper analyses the decadal variability of the Mean Sea Level (MSL) trend for the Mediterranean Sea and three subregions using a combination of satellite altimetry, tide gauges and reanalyses datasets for the past 30 years (1993–2022). These estimates indicate a decadal variability of the MSL across the analysed period, and a trend slowdown in the 2013–2022 decade compared to previous periods. While the overall trend remains positive across the Mediterranean basin, regional differences are evident. The Western Mediterranean shows an accelerating trend, consistent with global sea level rise, while the Eastern Mediterranean has experienced a decadal slowdown, particularly in the semi-enclosed Adriatic and Aegean Seas, where negative trends are observed. This slowdown is attributed to the combined effects of changes in the water cycle and the balancing of thermal and haline steric components. A key driver of this trend is increased evaporation, which is not offset by precipitation, runoff, or transport through the Straits. These results underscore the significance of the Mediterranean’s water budget in influencing sea level trends and highlight the complexity of modelling and interpreting decadal sea level changes. The findings suggest that continued monitoring and a better understanding of regional water budgets are crucial for refining future projections and developing effective climate adaptation strategies for the Mediterranean coastal areas.
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spelling doaj-art-a65a9708820744aa82ef610264d3190f2025-02-07T17:21:03ZengFrontiers Media S.A.Frontiers in Climate2624-95532025-02-01710.3389/fclim.2025.14727311472731The Eastern Mediterranean Sea mean sea level decadal slowdown: the effects of the water budgetFederica Borile0Nadia Pinardi1Nadia Pinardi2Vladyslav Lyubartsev3Mahmud Hasan Ghani4Antonio Navarra5Antonio Navarra6Jacopo Alessandri7Emanuela Clementi8Giovanni Coppini9Lorenzo Mentaschi10Giorgia Verri11Vladimir Santos da Costa12Enrico Scoccimarro13Francesco Misurale14Antonio Novellino15Paolo Oddo16Department of Physics and Astronomy, University of Bologna, Bologna, ItalyDepartment of Physics and Astronomy, University of Bologna, Bologna, ItalyCMCC Foundation—Euro-Mediterranean Center on Climate Change, Bologna, ItalyCMCC Foundation—Euro-Mediterranean Center on Climate Change, Bologna, ItalyDepartment of Physics and Astronomy, University of Bologna, Bologna, ItalyCMCC Foundation—Euro-Mediterranean Center on Climate Change, Bologna, ItalyDepartment of Geology, Biology, Ecology and Environmental Sciences, University of Bologna, Bologna, ItalyDepartment of Physics and Astronomy, University of Bologna, Bologna, ItalyCMCC Foundation—Euro-Mediterranean Center on Climate Change, Bologna, ItalyCMCC Foundation—Euro-Mediterranean Center on Climate Change, Bologna, ItalyDepartment of Physics and Astronomy, University of Bologna, Bologna, ItalyCMCC Foundation—Euro-Mediterranean Center on Climate Change, Bologna, ItalyCMCC Foundation—Euro-Mediterranean Center on Climate Change, Bologna, ItalyCMCC Foundation—Euro-Mediterranean Center on Climate Change, Bologna, ItalyETT SpA, Genova, ItalyETT SpA, Genova, ItalyDepartment of Physics and Astronomy, University of Bologna, Bologna, ItalyThis paper analyses the decadal variability of the Mean Sea Level (MSL) trend for the Mediterranean Sea and three subregions using a combination of satellite altimetry, tide gauges and reanalyses datasets for the past 30 years (1993–2022). These estimates indicate a decadal variability of the MSL across the analysed period, and a trend slowdown in the 2013–2022 decade compared to previous periods. While the overall trend remains positive across the Mediterranean basin, regional differences are evident. The Western Mediterranean shows an accelerating trend, consistent with global sea level rise, while the Eastern Mediterranean has experienced a decadal slowdown, particularly in the semi-enclosed Adriatic and Aegean Seas, where negative trends are observed. This slowdown is attributed to the combined effects of changes in the water cycle and the balancing of thermal and haline steric components. A key driver of this trend is increased evaporation, which is not offset by precipitation, runoff, or transport through the Straits. These results underscore the significance of the Mediterranean’s water budget in influencing sea level trends and highlight the complexity of modelling and interpreting decadal sea level changes. The findings suggest that continued monitoring and a better understanding of regional water budgets are crucial for refining future projections and developing effective climate adaptation strategies for the Mediterranean coastal areas.https://www.frontiersin.org/articles/10.3389/fclim.2025.1472731/fullMediterranean Seawater budgetdecadal variabilitysteric sea levelclimate adaptationmean sea level trend
spellingShingle Federica Borile
Nadia Pinardi
Nadia Pinardi
Vladyslav Lyubartsev
Mahmud Hasan Ghani
Antonio Navarra
Antonio Navarra
Jacopo Alessandri
Emanuela Clementi
Giovanni Coppini
Lorenzo Mentaschi
Giorgia Verri
Vladimir Santos da Costa
Enrico Scoccimarro
Francesco Misurale
Antonio Novellino
Paolo Oddo
The Eastern Mediterranean Sea mean sea level decadal slowdown: the effects of the water budget
Frontiers in Climate
Mediterranean Sea
water budget
decadal variability
steric sea level
climate adaptation
mean sea level trend
title The Eastern Mediterranean Sea mean sea level decadal slowdown: the effects of the water budget
title_full The Eastern Mediterranean Sea mean sea level decadal slowdown: the effects of the water budget
title_fullStr The Eastern Mediterranean Sea mean sea level decadal slowdown: the effects of the water budget
title_full_unstemmed The Eastern Mediterranean Sea mean sea level decadal slowdown: the effects of the water budget
title_short The Eastern Mediterranean Sea mean sea level decadal slowdown: the effects of the water budget
title_sort eastern mediterranean sea mean sea level decadal slowdown the effects of the water budget
topic Mediterranean Sea
water budget
decadal variability
steric sea level
climate adaptation
mean sea level trend
url https://www.frontiersin.org/articles/10.3389/fclim.2025.1472731/full
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