surface_height_above_geopotential_datum
completeCreated: Feb. 8, 2017
Proposer: Jonathan Gregory
Proposed Date: 2015-09-06
CF trac ticket 143 has been agreed.
Change Date: Feb. 8, 2017, 4:12 p.m.
Term: surface_height_above_geopotential_datum
Unit: m
Unit ref: ULAA
AMIP:
GRIB:
Change Date: Feb. 8, 2017, 4:12 p.m.
Term: surface_height_above_geopotential_datum
Unit: m
Unit ref: ULAA
AMIP:
GRIB:
The surface called "surface" means the lower boundary of the atmosphere.
Change Date: May 18, 2017, 9:50 a.m.
Term: surface_height_above_geopotential_datum
Unit: m
Unit ref: ULAA
AMIP:
GRIB:
Height is a measure of vertical distance. The surface called "surface" means the lower boundary of the atmosphere. The "geopotential datum" is the geopotential reference level (level of zero geopotential) where this is not a specifically named level such as the geoid or a reference ellipsoid.
Change Date: May 18, 2017, 9:57 a.m.
Term: surface_height_above_geopotential_datum
Unit: m
Unit ref: ULAA
AMIP:
GRIB:
"Height_above_X" means the vertical distance above the named surface X. The surface called "surface" means the lower boundary of the atmosphere. The "geopotential datum" is the geopotential reference level (level of zero geopotential) where this is not a specifically named level such as the geoid or a reference ellipsoid.
Change Date: July 4, 2017, 2:18 p.m.
Term: surface_height_above_geopotential_datum
Unit: m
Unit ref: ULAA
AMIP:
GRIB:
"Height_above_X" means the vertical distance above the named surface X. The surface called "surface" means the lower boundary of the atmosphere. The "geopotential datum" is any estimated surface of constant geopotential used as a datum i.e. a reference level; for the geoid as a datum, specific standard names are available. To specify which geoid or geopotential datum is being used as a reference level, a grid_mapping variable should be attached to the data variable as described in Chapter 5.6 of the CF Convention.