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The Transient Response of Ice Shelf Melting to Ocean Change
Publisher: American Meteorological Society
Abstract: AbstractIdealized modeling studies have shown that the melting of ice shelves varies as a quadratic function of ocean temperature. However, this result is the equilibrium response, derived from steady ice?ocean simulations ...
Oscillating Dense Plumes
Publisher: American Meteorological Society
Abstract: he flow of dense polar shelf waters down continental slopes is a critical component of the global ocean circulation. Recent observations suggest that such plumes can be heavily impacted by tidal variability, and many of ...
The Effects of Rotation and Ice Shelf Topography on Frazil-Laden Ice Shelf Water Plumes
Publisher: American Meteorological Society
Abstract: A model of the dynamics and thermodynamics of a plume of meltwater at the base of an ice shelf is presented. Such ice shelf water plumes may become supercooled and deposit marine ice if they rise (because of the pressure ...
The Response of Ice Shelf Basal Melting to Variations in Ocean Temperature
Publisher: American Meteorological Society
Abstract: A three-dimensional ocean general circulation model is used to study the response of idealized ice shelves to a series of ocean-warming scenarios. The model predicts that the total ice shelf basal melt increases quadratically ...
The Effect of a New Drag-Law Parameterization on Ice Shelf Water Plume Dynamics
Publisher: American Meteorological Society
Abstract: A drag law accounting for Ekman rotation adjacent to a flat, horizontal boundary is proposed for use in a plume model that is written in terms of the depth-mean velocity. The drag law contains a variable turning angle ...
Wave Breaking in Dense Plumes
Publisher: American Meteorological Society
Abstract: inking dense plumes are important in many oceanographic settings, notably the polar formation of deep and bottom waters. The dense water sources feeding such plumes are commonly affected by tidal modulation, leading to ...
Impact of Atmospheric Forcing on Antarctic Continental Shelf Water Masses
Publisher: American Meteorological Society
Abstract: he Antarctic continental shelf seas feature a bimodal distribution of water mass temperature, with the Amundsen and Bellingshausen Seas flooded by Circumpolar Deep Water that is several degrees Celsius warmer than the cold ...
The Effect of Meltwater Plumes on the Melting of a Vertical Glacier Face
Publisher: American Meteorological Society
Abstract: reshwater produced by the surface melting of ice sheets is commonly discharged into ocean fjords from the bottom of deep fjord-terminating glaciers. The discharge of the freshwater forms upwelling plumes in front of the ...
Modeling the Influence of the Weddell Polynya on the Filchner–Ronne Ice Shelf Cavity
Publisher: American Meteorological Society
Abstract: ABSTRACTOpen-ocean polynyas in the Weddell Sea of Antarctica are the product of deep convection, which transports Warm Deep Water (WDW) to the surface and melts sea ice or prevents its formation. These polynyas occur only ...
The Impacts of Combined SAM and ENSO on Seasonal Antarctic Sea Ice Changes
Publisher: American Meteorological Society