Concentration distributions are influenced by movements of water between layers and the formation of a large convection cell in the lowermost layer. |
The circular current that results is called a convection cell. |
The fluid in a convection cell is entrained in the flow inside the cell, such that the fluid in the cell is isolated from the fluid in the environment. |
Because of the resulting uncertainty in forecasts of convection cell generation, ensemble forecast techniques must be employed to produce probabilistic forecasts. |
While mean circulation in the Weddell Sea is primarily barotropic, it can be expected that sufficient deep vertical shear is present to vertically decouple a convection cell over periods up to years. |
However, if the colder material from the convection cell under the old margin were to get entrained into the upwelling at the ridge axis, the drop in temperature alone would decrease the melt delivered. |