NEWS AND VIEWS. 29 March 2023 . Southern Ocean heat sink hindered by melting ice . Simulations show that the melting of Antarctic ice reduces the production of deep water that stores heat at the bottom of the Southern Ocean. Comprehensive models could reveal whether the trend will persist. Joellen L. Russell 0. Joellen L. Russell Joellen L. Russell is in the Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA. ...