@article{levermann_mignot07,
  title   = {The role of northern sea ice cover for the weakening of the thermohaline circulation under global warming},
  author  = {A. Levermann and J. Mignot and S. Nawrath and S. Rahmstorf},
  journal = {Journal of Climate},
  year    = {2007},
  volume  = {20},
  pages   = {4160-4171}}