Definitions used in this ATBD#

Brightness Temperature#

The Brightness Temperature is the temperature of a surface as seen by a passive microwave sensor. It is a measure of the amount of energy emitted by a surface. It is usually expressed in Kelvin.

Copernicus Imaging Microwave Radiometer#

The Copernicus Imaging Microwave Radiometer is a microwave radiometer which launch is planned by ESA in 2028.

Sea Ice Concentration#

The Sea Ice Concentration is the fraction of the sea surface covered by sea ice. It is a measure of the amount of sea ice in a given area. It is usually expressed as a percentage.

Sea Surface Salinity#

The Sea Surface Salinity is the salinity of the sea. It is usually expressed in practical salinity units (psu).

Sea Surface Temperature#

The Sea Surface Temperature is the temperature of the surface of the sea. It is usually expressed in Kelvin.