| The Mertz-HOPE ocean and sea ice model is used to determine theeffect of increased air temperature and precipitationon water mass formation processes in the Mertz Glacier Polynya (MGP).The Mertz-HOPE GCM is a derivative of the z-coordinateHamburg Ocean Primitive Equation Model (HOPE)which employs orthogonal curvilinear horizontal coordinates.Arbitrary placement and sizing of the models two poles allows for the construction of globalgrids with regionally high horizontal resolution.Placing a small radius ′south′ pole inland of the Mertz Glacier polynya,and a large radius ′north pole′ over Eurasia,results in a high horizontal resolution (10-15~km) model of the polynya system.The global set-up has the advantage that open or closed boundaries are avoided.Numerical experiments address the impact of increased air temperature and increasedprecipitation on the areal extent of the MGP, the net surface fluxes through the MGP,and the rate of High Salinity Shelf Water formation and outflow from the Adelie Depression. |
|
|