Concept information
Preferred term
lagrangian_tendency_of_atmosphere_sigma_coordinate
Definition
- The phrase "tendency_of_X" means derivative of X with respect to time. The Lagrangian tendency of a quantity is its rate of change following the motion of the fluid, also called the "material derivative" or "convective derivative". The Lagrangian tendency of sigma plays the role of the upward component of air velocity when the atmosphere sigma coordinate (a dimensionless atmosphere vertical coordinate) is being used as the vertical coordinate. If the vertical air velocity is upwards, it is negative when expressed as a tendency of sigma; downwards is positive. See Appendix D of the CF convention for information about parametric vertical coordinates.
Note
- Mapping to be determined
Replaces
URI
https://vocab.met.no/CFSTDN/lagrangian_tendency_of_atmosphere_sigma_coordinate
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