Variability of the North Atlantic circulation measured by the Ovide project

• Main Authors: Lherminier, Pascale, Mercier, Herlé, Gourcuff, Claire, Pérez, Fiz F., Vázquez Rodríguez, Marcos, Morin, Pascal
• Format: Conference Object
• Language: English
• Published: 2008
• Subjects: Greenland; Cape Farewell; East Greenland; east greenland current; north atlantic current; North Atlantic Deep Water; North Atlantic
• Online Access: http://hdl.handle.net/10261/330500

Ocean Sciences Meeting, March 2-7, 2008, Orlando, Florida The Ovide (A25) hydrological section extends from Cape Farewell (Greenland) to Lisbon (Portugal), crossing perpendicularly three major currents of the North Atlantic: the East Greenland Current, the Deep Western Boundary Current and the North Atlantic Current. The section, close to the 1997 FourEx section, was performed three times in 2002, 2004 and 2006, collecting physical and biogeochemical measurements at a hundred stations. The significative variability observed in both the estimated transports and the measured water mass properties will be discussed. Establishing a transport budget between the Greenland-Scotland sills and the section, it is possible to calculate the diapycnal transport between the North Atlantic Deep Water and the layer above. A proxy of the Atlantic Meridional verturning Circulation across the Ovide section is proposed, leading to a discussion on the timescale of its variability and on its connection with the horizontal circulation and the poleward heat transport No