Calculate the Wind Chill Temperature Index (WCTI).
Calculates WCTI from the current temperature and wind speed using the formula
outlined by the FCM [FCMR192003].
Specifically, these formulas assume that wind speed is measured at
10m. If, instead, the speeds are measured at face level, the winds
need to be multiplied by a factor of 1.5 (this can be done by specifying
face_level_winds as True).
temperature (pint.Quantity) – Air temperature
speed (pint.Quantity) – Wind speed at 10m. If instead the winds are at face level,
face_level_winds should be set to True and the 1.5 multiplicative
correction will be applied automatically.
face_level_winds (bool, optional) – A flag indicating whether the wind speeds were measured at facial
level instead of 10m, thus requiring a correction. Defaults to
mask_undefined (bool, optional) – A flag indicating whether a masked array should be returned with
values where wind chill is undefined masked. These are values where
the temperature > 50F or wind speed <= 3 miles per hour. Defaults
pint.Quantity – Corresponding Wind Chill Temperature Index value(s)