Schematic (IMAGE) University College London Caption Schematic showing the surface circulation of the North Atlantic, and the study region where increasing amounts of warm subtropical waters have been detected through the 20th century. Credit Credit P. Spooner & D. Thornalley. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.