number_of_days_with_surface_temperature_strictly_below_threshold

new

Created: 19 May 2026

Proposer: Lars Bärring

Proposed Date: 2026-04-28

308 #7,8.

Standard names: Standard names for climate indicators based on thresholds

Change Date: 19 May 2026, 11:15 p.m.

number_of_days_with_surface_temperature_below_threshold 1 [UUUU] P07 id: Z0QXDO4I
The surface temperature is the temperature at the interface, not the bulk temperature of the medium above or below. The surface called "surface" means the lower boundary of the atmosphere. A variable whose standard name has the form number_of_days_with_X_below|above_threshold is a count of the number of days on which the condition X_below|above_threshold is satisfied. It must have a coordinate variable or scalar coordinate variable with the a standard name of X to supply the threshold(s). It must have a climatological time variable, and a cell_methods entry for within days which describes the processing of quantity X before the threshold is applied. A number_of_days is an extensive quantity in time, and the cell_methods entry for over days should be "sum".

Change Date: 19 May 2026, 11:16 p.m.

number_of_days_with_surface_temperature_strictly_below_threshold 1 [UUUU]
The surface temperature is the temperature at the interface, not the bulk temperature of the medium above or below. The surface called "surface" means the lower boundary of the atmosphere. A variable whose standard name has the form number_of_days_with_X_below|above_threshold is a count of the number of days on which the condition X_below|above_threshold is satisfied. It must have a coordinate variable or scalar coordinate variable with the a standard name of X to supply the threshold(s). It must have a climatological time variable, and a cell_methods entry for within days which describes the processing of quantity X before the threshold is applied. A number_of_days is an extensive quantity in time, and the cell_methods entry for over days should be "sum".

Change Date: 19 May 2026, 11:20 p.m.

number_of_days_with_surface_temperature_strictly_below_threshold 1 [UUUU]
The surface temperature is the temperature at the interface, not the bulk temperature of the medium above or below. The surface called "surface" means the lower boundary of the atmosphere. A variable whose standard name has the form number_of_days_with_X_strictly_below_threshold is a count of the number of days on which the condition X_strictly_below_threshold is satisfied, where the threshold value itself is excluded (strict inequality). It must have a coordinate variable or scalar coordinate variable with the a standard name of X to supply the threshold(s). It must have a climatological time variable, and a cell_methods entry for within days which describes the processing of quantity X before the threshold is applied. A number_of_days is an extensive quantity in time, and the cell_methods entry for over days should be "sum".