Concept
stratiform_cloud_area_fraction_in_atmosphere_layer
| URI | http://vocab.nerc.ac.uk/collection/P07/current/CFSN0324/3/ | ||
|---|---|---|---|
| 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 also exist for high, medium and low cloud types. Standard names referring only to "cloud_area_fraction" should be used for quantities for the whole atmosphere column. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). Cloud area fraction is also called "cloud amount" and "cloud cover". | ||
| Date | 2024-09-04T12:51:22 | ||
| Identifier | SDN:P07::CFSN0324 | ||
| Note | accepted | ||
| Is Version Of | CFSN0324 | ||
| Previous Version | 1 , 2 | ||
| version | 3 | ||
| Same As | MMI | http://mmisw.org/ont/cf/parameter/stratiform_cloud_area_fraction_in_atmosphere_layer | |
| CF | http://vocab.nerc.ac.uk/standard_name/stratiform_cloud_area_fraction_in_atmosphere_layer/ | ||
| Broader | P04:G260 |
EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency | |
P64:G260 |
EARTH SCIENCE > Atmosphere > Clouds > Cloud Amount/Frequency | ||
| Related | P06:UUUU |
Dimensionless | |
| P02 SeaDataNet Parameter Discovery Vocabulary - (2) | |||
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