sea_ice_area_fraction_where_above_threshold

under discussion

Created: 8 Aug 2025

Proposer: Bruce Calvert

Proposed Date: 2025-08-02

add to cfeditor

Standard names: floating_ice_area_fraction and related names

Change Date: 8 Aug 2025, 4:50 p.m.

sea_ice_area_fraction_where_above_threshold 1
The value is equal to the sea_ice_area_fraction where it is above the threshold. Otherwise, the value is zero.

Change Date: 8 Aug 2025, 4:50 p.m.

sea_ice_area_fraction_where_above_threshold 1 [XXXX]
The value is equal to the sea_ice_area_fraction where it is above the threshold. Otherwise, the value is zero.

Change Date: 15 Apr 2026, 1:06 p.m.

sea_ice_area_fraction_where_above_threshold 1 [XXXX]
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. "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, or if the cell_methods restricts the evaluation to some portion of that grid cell (e.g. "where sea_ice"), then it is the area of interest divided by the area of the identified portion. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. Unless indicated, a quantity is assumed to apply to the whole area of each horizontal grid box. The qualifier "where_"type specifies instead that the quantity applies only to the part of the grid box of the named type. The value is equal to the sea_ice_area_fraction where it is above the threshold. Otherwise, the value is zero.

Change Date: 22 Apr 2026, 11:21 a.m.

sea_ice_area_fraction_where_above_threshold 1 [XXXX]
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. "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, or if the cell_methods restricts the evaluation to some portion of that grid cell (e.g. "where sea_ice"), then it is the area of interest divided by the area of the identified portion. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. Unless indicated, a quantity is assumed to apply to the whole area of each horizontal grid box. The qualifier "where_" type specifies instead that the quantity applies only to the part of the grid box of the named type. The value is equal to the sea_ice_area_fraction where it is above the threshold. Otherwise, the value is zero.

Change Date: 29 Apr 2026, 10:52 a.m.

sea_ice_area_fraction_where_above_threshold 1 [XXXX]
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. "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, or if the cell_methods restricts the evaluation to some portion of that grid cell (e.g. "where sea_ice"), then it is the area of interest divided by the area of the identified portion. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. Unless indicated, a quantity is assumed to apply to the whole area of each horizontal grid box. The qualifier "where_" type specifies instead that the quantity applies only to the part of the grid box of the named type. The value is equal to the sea_ice_area_fraction where it is above the threshold. Otherwise, the value is zero. The area threshold value must be specified by supplying a coordinate variable or scalar coordinate variable with the standard name of sea_ice_area_fraction.