number_of_days_with_wind_speed_at_or_above_threshold 1 [UUUU] The wind speed is the magnitude of the wind velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_air_velocity"). A variable whose standard name has the form number_of_days_with_X_at_or_above_threshold is a count of the number of days on which the condition X_at_or_above_threshold is satisfied, where the threshold value itself is included. 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".