P01 term for ice cover

[peterdesmet]

Ice cover is defined as:

Ice coverage within the transect %

It does not match the too narrow:

• Coverage (by area) of ice on the water body by Advanced Microwave Scanning Radiometer for EOS (AMSRE-E) http://vocab.nerc.ac.uk/collection/P01/current/SICEAMSR/
• Coverage (by area) of ice on the water body by model prediction http://vocab.nerc.ac.uk/collection/P01/current/SICECMOD/
• Coverage (by area) of ice on the water body by image analysis http://vocab.nerc.ac.uk/collection/P01/current/SICECSAT/

These three terms have the broader concept:

Ice coverage

• http://vocab.nerc.ac.uk/collection/P25/current/ICECOV/
• The extent to which the Earth's surface is covered by frozen water

sea_ice_area_fraction

• http://vocab.nerc.ac.uk/collection/P07/current/CFSN0424/
• "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. Sea ice area fraction is area of the sea surface occupied by sea ice. It is also called "sea ice concentration". "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs.

The latter has a very specific definition, but mentions percentage and might actually apply. The first one is more generic and maybe easier to understand. @rubenpp7 @nicolasvanermen, which one would you pick?

[nicolasvanermen]

There is no actual conflict in definition, only in scope I guess. In case of usage in seabirds surveys it should be clear that this concerns the ice coverage inside the transect that is monitored, and not on any wider spatial scale.

[peterdesmet]

Ok, I will link to the specific one sea_ice_area_fraction.