Concept
cloud_area_fraction_in_atmosphere_layer
| URI | http://vocab.nerc.ac.uk/collection/P07/current/CFSN0746/3/ | ||
|---|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | ||
| Alternative Labels | |||
| Definition | "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. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Standard names referring only to "cloud_area_fraction" should be used for quantities for the whole atmosphere column. Standard names also exist for high, medium and low cloud types. Cloud area fraction is also called "cloud amount" and "cloud cover". | ||
| Date | 2024-09-04T12:51:23 | ||
| Identifier | SDN:P07::CFSN0746 | ||
| Note | accepted | ||
| Is Version Of | CFSN0746 | ||
| Previous Version | 1 , 2 | ||
| version | 3 | ||
| Same As | MMI | http://mmisw.org/ont/cf/parameter/cloud_area_fraction_in_atmosphere_layer | |
| CF | http://vocab.nerc.ac.uk/standard_name/cloud_area_fraction_in_atmosphere_layer/ | ||
| Broader | P02:CHEX |
Cloud cover height and extent | |
P04:G260 |
EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency | ||
P64:G260 |
EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency | ||
| Related | P06:UUUU |
Dimensionless | |
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