Term: tidal_datum_epoch

Unit: s

Unit ref: UTBB

AMIP:

GRIB:

A specific time period over which tide observations are taken and reduced to obtain mean values (e.g., mean lower low water, mean sea level) to provide reference levels (tidal datums) for subsequent water level measurements. The standard name is used for an ancillary scalar time variable that may be linked to any sea level variable referenced to a tidal datum. It is suggested that the scalar variable be set to the epoch midpoint. Bounds to specify the start and end of the epoch are mandatory. It is recommended that a plain-language description of the epoch (e.g. 1960-1978) be included in the long_name attribute.

Term: reference_epoch

Unit: s

Unit ref: UTBB

AMIP:

GRIB:

The period of time over which a dataset representing a parameter have been summarised (usually by averaging) in order to provide a baseline against which other data representing the same, or other parameters may be compared. If a coordinate, scalar coordinate, or auxiliary coordinate variable with this standard name has bounds, then the bounds specify the beginning and end of the time period over which the data aggregation was determined. It is not the time for which the actual measurements are valid; the standard name of time should be used for that.

Term: reference_epoch

Unit: s

Unit ref: UTBB

AMIP:

GRIB:

The period of time over which a dataset representing a parameter has been summarised (usually by averaging) in order to provide a baseline against which other data representing the same, or other parameters may be compared. If a coordinate, scalar coordinate, or auxiliary coordinate variable with this standard name has bounds, then the bounds specify the beginning and end of the time period over which the data aggregation was determined. It is not the time for which the actual measurements are valid; the standard name of time should be used for that.

Term: reference_epoch

Unit: s

Unit ref: UTBB

AMIP:

GRIB:

The period of time over which a parameter has been summarised (usually by averaging) in order to provide a reference (baseline) against which data has been compared. When a coordinate, scalar coordinate, or auxiliary coordinate variable with this standard name has bounds, then the bounds specify the beginning and end of the time period over which the reference was determined. If the reference represents an instant in time, rather than a period, then bounds may be omitted. It is not the time for which the actual measurements are valid; the standard name of time should be used for that.