area_fraction

complete
Created: Feb. 11, 2019
Proposer: Martin Juckes
Proposed Date: 2019-01-30
Update definition to better explain use of dimensionless units in fraction quantities.
Change Date: Feb. 11, 2019, 7:21 p.m.
Term: area_fraction
Unit: 1
Unit ref: UUUU
AMIP:
GRIB:
"Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X.
Change Date: Feb. 11, 2019, 7:27 p.m.
Term: area_fraction
Unit: 1
Unit ref: UUUU
AMIP:
GRIB:
Change Date: Feb. 11, 2019, 7:28 p.m.
Term: area_fraction
Unit: 1
Unit ref: UUUU
AMIP:
GRIB:
"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. To specify which area is quantified by a variable with standard name area_fraction, provide a coordinate variable or scalar coordinate variable with standard name area_type. Alternatively, if one is defined, use a more specific standard name of X_area_fraction for the fraction of horizontal area occupied by X.