SVINØY SECTION A full-scale ocean climate laboratory in the Norwegian Atlantic Current.

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Presentation transcript:

SVINØY SECTION A full-scale ocean climate laboratory in the Norwegian Atlantic Current

Warming of the Atlantic Inflow to the Norwegian Sea toward Arctic; by Kjell Arild Orvik and Øystein Skagseth Geophysical Inst., University of Bergen, and Marine Research Inst., Bergen Outline - What causes the extreme warming - Connect it to dynamical processes in the North Atlantic - Strength of the Sub-Polar Gyre and interaction of water masses - Moored temp/current measurements the in Svinøy Section - Sea Surface High (SSH) observations from satellite altimeter - Empirical Orthogonal functions (EOF) methodology

Major Pathways of Atlantic Water and extension of Atlantic Water in North Atlantic & Norwegin Sea, from SVP-drifters Orvik & Niiler, GRL 2002

Vertically integrated transport of Atlantic Inflow Orvik, Skagseth & Mork, DSR 2001 Orvik & Skagseth, CSR 2003

Temperature, Velocity & Heat-flux variations in the core of the AI Orvik & Skagseth, GRL 2005

Timeseries of vT variations Connected to variarions in V and T Orvik & Skagseth,GRL 2005

EOF-mode 2: 13.4 % of Variance Hakkinen & Rhines, 2004 Sea Surface High (SSH) from TOPEX/Poseidon altimeter. 1/3 deg resolution 1-year mv-filter

Time series of v and T in Svinøy Section updated to 2006 have been removed from the presentation, contact the author if you need further details

CONCLUSION The warming of the Atlantic Inflow to the Norwegian Sea toward the Arctic Ocean appears to be determined by the dynamic processes in the North Atlantic

EOF-mode 1: 43.9 % of Variance Hakkinen & Rhines, 2004 Sea Surface High (SSH) from TOPEX/Poseidon altimeter. 1/3 deg resolution 1-year mv-filter