Concept
atmosphere_stability_showalter_index
| URI | http://vocab.nerc.ac.uk/collection/P07/current/J1MV00N0/2/ | ||
|---|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | ||
| Alternative Labels | |||
| Definition | The atmosphere_stability_showalter_index is an index used to determine convective and thunderstorm potential and is often referred to as simply the showalter index. The index is defined as the temperature difference between a parcel of air lifted from 850 to 500 hPa (wet adiabatically) and the ambient air temperature at 500 hPa. It is strongly recommended that a variable with this standard name should have the attribute units_metadata="temperature: difference", meaning that it refers to temperature differences and implying that the origin of the temperature scale is irrelevant, because it is essential to know whether a temperature is on-scale or a difference in order to convert the units correctly (cf. https://cfconventions.org/cf-conventions/cf-conventions.html#temperature-units). | ||
| Date | 2024-05-20T20:39:49 | ||
| Identifier | SDN:P07::J1MV00N0 | ||
| Note | accepted | ||
| Is Version Of | J1MV00N0 | ||
| Previous Version | 1 | ||
| version | 2 | ||
| Same As | MMI | http://mmisw.org/ont/cf/parameter/atmosphere_stability_showalter_index | |
| CF | http://vocab.nerc.ac.uk/standard_name/atmosphere_stability_showalter_index/ | ||
| Related | P06:UPKA |
Kelvins | |
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