FN Archimer Export Format PT J TI The Levantine Intermediate Water in the western Mediterranean and its interactions with the Algerian Gyres: insights from 60 years of observation BT AF Mallil, Katia Testor, Pierre Bosse, Anthony Margirier, Félix Houpert, Loic Le Goff, Hervé Mortier, Laurent Louanchi, Ferial AS 1:1,2;2:1;3:3;4:4;5:5;6:1;7:1;8:2; FF 1:;2:;3:;4:;5:;6:;7:;8:; C1 Laboratoire d’Océanographie et du Climat: Expérimentations et Approches Numériques (LOCEAN, UMR 7159): CNRS/SU/MNHN/IRD, 75005, Paris, France Ecole Nationale Supérieure des Sciences de la Mer et de l’Aménagement du Littoral (ENSSMAL), Laboratoire des Ecosystèmes Marins et Littoraux (EcosysMarL), 16320, Alger, Algeria Aix-Marseille Université, Université de Toulon, CNRS, IRD, MIO UM110, 13288, Marseille, France School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA OSE Engineering, 78470, Saint-Rémy-lès-Chevreuse, France C2 LOCEAN, FRANCE ENSSMAL, ALGERIA UNIV AIX MARSEILLE, FRANCE GEORGIA INST TECHNOL, USA OSE ENGINEERING, FRANCE IN DOAJ IF 3.2 TC 3 UR https://archimer.ifremer.fr/doc/00741/85326/90348.pdf https://archimer.ifremer.fr/doc/00741/85326/95701.pdf LA English DT Article CR SOMBA-GE-2014 BO Téthys II AB The presence of two large scale cyclonic gyres in the Algerian basin influences the general and eddy circulation, but their effect on water mass transfer remain poorly characterized. Our study has confirmed the presence of these gyres using the first direct current measurements of the whole water column collected during the SOMBA-GE2014 cruise, specifically designed to investigate these gyres. Using cruise sections and a climatology from 60 years of in situ measurements, we have also shown the effect of these gyres on the distribution at intermediate depth of Levantine Intermediate Water (LIW) with warmer (~0.15 °C) and saltier (~0.02 g.kg−1) characteristics in the Algerian basin than in the Provençal basin. The Algerian gyres also impact horizontal density gradients with sinking of the isopycnals at the gyres’ centres. Temporal cross-correlation of LIW potential temperature referenced to the signal observed south of Sardinia reveal timescale of transit of 4 months to get to the centre of the Algerian basin. The LIW temperature and salinity trends over various periods are estimated to: +0.0017 ± 0.0014 °C.year−1 and +0.0017 ± 0.0003 year−1 respectively over the 1960–2017 period, and accelerating to +0.059 ± 0.072 °C.year−1 and +0.013 ± 0.006 year−1 over the 2013–2017 period. PY 2022 PD JUN SO Ocean Science SN 1812-0784 PU Copernicus GmbH VL 18 IS 4 UT 000820746700001 BP 937 EP 952 DI 10.5194/os-18-937-2022 ID 85326 ER EF