At a time when the polar regions are undergoing rapid and unprecedented change, understanding exchanges of momentum, heat and salt at the ice-ocean interface is critical for realistically predicting the future state of sea ice. By offering a measurement platform largely unaffected by surface waves, drifting sea ice provides a unique laboratory for studying aspects of geophysical boundary layer flows that are extremely difficult to measure elsewhere. This book draws on both extensive observations and theoretical principles to develop a concise description of the impact of stress, rotation, and buoyancy on the turbulence scales that control exchanges between the atmosphere and underlying ocean when sea ice is present. Several interesting and unique observational data sets are used to illustrate different aspects of ice-ocean interaction ranging from the impact of salt on melting in the Greenland Sea marginal ice zone, to how nonlinearities in the equation of state for seawater affect mixing in the Weddell Sea.
The book’s content, developed from a series of lectures, may be appropriate additional material for upper-level undergraduates and first-year graduate students studying the geophysics of sea ice and planetary boundary layers.
Investigates complex polar exchanges - a rapidly evolving field due to the widespread interest in global warming and the impact on polar regionsThe main theme is understanding how turbulence effects exchange between ice and ocean through the ice-ocean boundary layerDescribes why the processes are important at high latitudes, what techniques are used and how they differ from standard oceanographic turbulence studiesEmphasizes the under-ice boundary layer as a laboratory, providing controls which are not possible in the open oceanThe book draws a number of concepts into a concise description, illustrated by unique observational data sets