Radionuclides as tracers of Arctic outflows: pathways, water mass mixing, and freshwater input to Davis Strait and the Labrador Sea
Lisa G. T. Leist,Maxi Castrillejo,Kumiko Azetsu-Scott,Craig Lee,Jed Lenetsky,Marc Ringuette,Christof Vockenhuber,Habacuc Pérez-Tribouillier,Catherine Jeandel,Jean-Éric Tremblay,and Núria Casacuberta
LEGOS, Université de Toulouse, CNRS, IRD, CNES, UPS, Toulouse, France
Jean-Éric Tremblay
Département de biologie, Québec Océan and Takuvik Joint International Laboratory (UMI 3376), Université Laval (Canada)-CNRS (France), Université Laval, Québec, Canada
The Arctic and Atlantic Oceans are connected by narrow passages, and the exchange of waters affect global climate. Using artificial radionuclides from nuclear reprocessing discharges, we traced the origin of water masses from the Arctic to the Labrador Sea. Results show that waters from Canadian Arctic origin entering via Lancaster Sound are a key freshwater source to the Labrador Sea. These flows strongly influence the formation of deep waters in the Atlantic, vital for the global circulation.
The Arctic and Atlantic Oceans are connected by narrow passages, and the exchange of waters...