Over the short term, that works to prevent changes in deep ocean circulation. (sciencenews.org)
Some of this may affect surface waters but it has greater implications for deep ocean circulation. (drtimball.com)
Scientists believe that the different pattern of deep ocean circulation was responsible for the elevated temperatures 3 million years ago when the carbon dioxide level in the atmosphere was arguably what it is now and the temperature was 4 degree Fahrenheit higher. (sciencedaily.com)