Response of the global ocean to Greenland and Antarctic ice melting

摘要: [1] We investigate the transient response of global ocean circulation to enhanced freshwater forcing associated with melting Greenland and Antarctic ice sheets. Increased runoff from results in a basin-wide North Atlantic on timescales few years, communicated via boundary waves, equatorial Kelvin westward propagating Rossby waves. In addition, modified air-sea interaction plays fundamental role setting up basin-scale its subpolar subtropical gyres. particular, dynamics thermodynamics lead depression central South that would not be expected linear wave dynamics. Moreover, heat content increases basin scales anomalous Greenland, suggesting ocean's coupled problem. Other parts world experience much slower adjustment forcing, planetary but also involving advective/diffusive processes, especially Southern Ocean. Over 50 years considered here, most sea level increase input remains contrast, around Antarctica has reduced effect ocean. both cases, none basins came stationary state during 50-year experiment.