This material can have thin blade-shaped projections known as platelets in a layer known as the skeletal layer.
This material can have thin blade-shaped projections known as platelets in a layer known as the skeletal layer. This materialcan contain features called polynyas, which exist in sensible and latent heat varieties, with the latter being formed primarilythrough the action of katabatic winds. Formation of this material begins with frazil, which in calm conditions proceeds toform nilas, which then via raftfting produce the congelation form of this substance. The biosphere arising within and aroundthis substance is dominated by diatoms. Microwave imaging from satellites such as NASA's SMMR and the Defense Department'sSSM/I are used to track the seasonal extent of this substance, whose high albedo is instrumental in keeping theatmosphere cool. The movement of this substance south through the Fram Strait into the North Atlantic can disrupt thethermohaline circulation. For 10 points, identify this substance which forms seasonally near the poles from liquid water.
This material can have thin blade-shaped projections known as platelets in a layer known as the skeletal layer.
sea ice [accept oceanic ice or ocean ice, but prompt on "ice"]