High-Resolution Modeling of Water Isotope (δ18O and δD) Distribution in the Mediterranean Sea

Mohamed Ayache; Jean Claude Dutay; Anne Mouchet; Kazuyo Tachikawa; Camille Risi; Gilles Ramstein

doi:10.1007/978-3-031-86777-4_101

High-Resolution Modeling of Water Isotope (δ¹⁸O and δD) Distribution in the Mediterranean Sea

Mohamed Ayache
, Jean Claude Dutay
, Anne Mouchet
, Kazuyo Tachikawa
, Camille Risi
, Gilles Ramstein

UVSQ
University of Liège
La Rochelle Université (IAE

Résultats de recherche: Le chapitre dans un livre, un rapport, une anthologie ou une collection › Contribution à une conférence › Revue par des pairs

Résumé

Water isotopes are widely used as proxies in climate research. However, our understanding of the processes that control their composition is still incomplete. In comparison to other major ocean basins, the Mediterranean Sea is well suited to improve our understanding of the factors influencing oxygen isotope variability and to refine current modelling approaches. This study successfully implemented and simulated stable water isotopes (δ¹⁸O and δD) across the Mediterranean basin using the high-resolution NEMO-MED12 dynamical model. The model accurately simulates the well-documented east–west δ¹⁸O gradient in Mediterranean water masses. Moreover, the results show a good agreement between simulated and observed δD. δD exhibits a strong linear relationship with δ¹⁸O (r² = 0.98) and salinity (r² = 0.94) across the Mediterranean basin. Furthermore, the modeled δ¹⁸O/salinity relationships align with observations, showing a weaker gradient in the eastern basins compared to the western basins. This development offers significant potential for paleoclimate-related applications.

langue originale	Anglais
titre	Dynamic Evolution of Atmospheric, Ecological, and Hydrological Systems in Circum-Mediterranean Regions - Proceedings of the 3rd MedGU 2023 Volume 1
rédacteurs en chef	Zhihua Zhang, Haroun Chenchouni, Mehmet Akif Sarikaya, Attila Ciner, Jasper Knight, Matteo Gentilucci, Imran Ali
Editeur	Springer Nature
Pages	541-545
Nombre de pages	5
ISBN (imprimé)	9783031867767
Les DOIs	https://doi.org/10.1007/978-3-031-86777-4_101
état	Publié - 1 janv. 2025
Evénement	3rd International conference on Mediterranean Geosciences Union, MedGU 2023 - Istanbul, Turquie Durée: 26 nov. 2023 → 30 nov. 2023

Série de publications

Nom	Advances in Science, Technology and Innovation
ISSN (imprimé)	2522-8714
ISSN (Electronique)	2522-8722

Une conférence

Une conférence	3rd International conference on Mediterranean Geosciences Union, MedGU 2023
Pays/Territoire	Turquie
La ville	Istanbul
période	26/11/23 → 30/11/23

SDG des Nations Unies

Ce résultat contribue à ou aux Objectifs de développement durable suivants

SDG 7 Énergie abordable et propre

Accès au document

10.1007/978-3-031-86777-4_101

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Lien vers la publication dans Scopus

Contient cette citation

Ayache, M., Dutay, J. C., Mouchet, A., Tachikawa, K., Risi, C., & Ramstein, G. (2025). High-Resolution Modeling of Water Isotope (δ¹⁸O and δD) Distribution in the Mediterranean Sea. Dans Z. Zhang, H. Chenchouni, M. A. Sarikaya, A. Ciner, J. Knight, M. Gentilucci, & I. Ali (eds.), Dynamic Evolution of Atmospheric, Ecological, and Hydrological Systems in Circum-Mediterranean Regions - Proceedings of the 3rd MedGU 2023 Volume 1 (p. 541-545). (Advances in Science, Technology and Innovation). Springer Nature. https://doi.org/10.1007/978-3-031-86777-4_101

Ayache, Mohamed ; Dutay, Jean Claude ; Mouchet, Anne et al. / High-Resolution Modeling of Water Isotope (δ¹⁸O and δD) Distribution in the Mediterranean Sea. Dynamic Evolution of Atmospheric, Ecological, and Hydrological Systems in Circum-Mediterranean Regions - Proceedings of the 3rd MedGU 2023 Volume 1. Editeur / Zhihua Zhang ; Haroun Chenchouni ; Mehmet Akif Sarikaya ; Attila Ciner ; Jasper Knight ; Matteo Gentilucci ; Imran Ali. Springer Nature, 2025. p. 541-545 (Advances in Science, Technology and Innovation).

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title = "High-Resolution Modeling of Water Isotope (δ18O and δD) Distribution in the Mediterranean Sea",

abstract = "Water isotopes are widely used as proxies in climate research. However, our understanding of the processes that control their composition is still incomplete. In comparison to other major ocean basins, the Mediterranean Sea is well suited to improve our understanding of the factors influencing oxygen isotope variability and to refine current modelling approaches. This study successfully implemented and simulated stable water isotopes (δ18O and δD) across the Mediterranean basin using the high-resolution NEMO-MED12 dynamical model. The model accurately simulates the well-documented east–west δ18O gradient in Mediterranean water masses. Moreover, the results show a good agreement between simulated and observed δD. δD exhibits a strong linear relationship with δ18O (r2 = 0.98) and salinity (r2 = 0.94) across the Mediterranean basin. Furthermore, the modeled δ18O/salinity relationships align with observations, showing a weaker gradient in the eastern basins compared to the western basins. This development offers significant potential for paleoclimate-related applications.",

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Ayache, M, Dutay, JC, Mouchet, A, Tachikawa, K, Risi, C & Ramstein, G 2025, High-Resolution Modeling of Water Isotope (δ¹⁸O and δD) Distribution in the Mediterranean Sea. Dans Z Zhang, H Chenchouni, MA Sarikaya, A Ciner, J Knight, M Gentilucci & I Ali (eds), Dynamic Evolution of Atmospheric, Ecological, and Hydrological Systems in Circum-Mediterranean Regions - Proceedings of the 3rd MedGU 2023 Volume 1. Advances in Science, Technology and Innovation, Springer Nature, p. 541-545, 3rd International conference on Mediterranean Geosciences Union, MedGU 2023, Istanbul, Turquie, 26/11/23. https://doi.org/10.1007/978-3-031-86777-4_101

High-Resolution Modeling of Water Isotope (δ¹⁸O and δD) Distribution in the Mediterranean Sea. / Ayache, Mohamed; Dutay, Jean Claude; Mouchet, Anne et al.
Dynamic Evolution of Atmospheric, Ecological, and Hydrological Systems in Circum-Mediterranean Regions - Proceedings of the 3rd MedGU 2023 Volume 1. Ed. / Zhihua Zhang; Haroun Chenchouni; Mehmet Akif Sarikaya; Attila Ciner; Jasper Knight; Matteo Gentilucci; Imran Ali. Springer Nature, 2025. p. 541-545 (Advances in Science, Technology and Innovation).

Résultats de recherche: Le chapitre dans un livre, un rapport, une anthologie ou une collection › Contribution à une conférence › Revue par des pairs

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AU - Dutay, Jean Claude

AU - Mouchet, Anne

AU - Tachikawa, Kazuyo

AU - Risi, Camille

AU - Ramstein, Gilles

N1 - Publisher Copyright: © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

PY - 2025/1/1

Y1 - 2025/1/1

N2 - Water isotopes are widely used as proxies in climate research. However, our understanding of the processes that control their composition is still incomplete. In comparison to other major ocean basins, the Mediterranean Sea is well suited to improve our understanding of the factors influencing oxygen isotope variability and to refine current modelling approaches. This study successfully implemented and simulated stable water isotopes (δ18O and δD) across the Mediterranean basin using the high-resolution NEMO-MED12 dynamical model. The model accurately simulates the well-documented east–west δ18O gradient in Mediterranean water masses. Moreover, the results show a good agreement between simulated and observed δD. δD exhibits a strong linear relationship with δ18O (r2 = 0.98) and salinity (r2 = 0.94) across the Mediterranean basin. Furthermore, the modeled δ18O/salinity relationships align with observations, showing a weaker gradient in the eastern basins compared to the western basins. This development offers significant potential for paleoclimate-related applications.

AB - Water isotopes are widely used as proxies in climate research. However, our understanding of the processes that control their composition is still incomplete. In comparison to other major ocean basins, the Mediterranean Sea is well suited to improve our understanding of the factors influencing oxygen isotope variability and to refine current modelling approaches. This study successfully implemented and simulated stable water isotopes (δ18O and δD) across the Mediterranean basin using the high-resolution NEMO-MED12 dynamical model. The model accurately simulates the well-documented east–west δ18O gradient in Mediterranean water masses. Moreover, the results show a good agreement between simulated and observed δD. δD exhibits a strong linear relationship with δ18O (r2 = 0.98) and salinity (r2 = 0.94) across the Mediterranean basin. Furthermore, the modeled δ18O/salinity relationships align with observations, showing a weaker gradient in the eastern basins compared to the western basins. This development offers significant potential for paleoclimate-related applications.

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KW - Water isotopes

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Ayache M, Dutay JC, Mouchet A, Tachikawa K, Risi C, Ramstein G. High-Resolution Modeling of Water Isotope (δ¹⁸O and δD) Distribution in the Mediterranean Sea. Dans Zhang Z, Chenchouni H, Sarikaya MA, Ciner A, Knight J, Gentilucci M, Ali I, rédacteurs en chef, Dynamic Evolution of Atmospheric, Ecological, and Hydrological Systems in Circum-Mediterranean Regions - Proceedings of the 3rd MedGU 2023 Volume 1. Springer Nature. 2025. p. 541-545. (Advances in Science, Technology and Innovation). doi: 10.1007/978-3-031-86777-4_101