pvlib.snow.fully_covered_nrel#
- pvlib.snow.fully_covered_nrel(snowfall, snow_depth=None, threshold_snowfall=1.0, threshold_depth=1.0)[source]#
Calculates the timesteps when modules are fully covered by snow.
- Parameters:
snowfall (Series) – Snowfall in each time period. [cm]
snow_depth (Series, optional) – Snow depth on the ground at the beginning of each time period. Must have the same index as
snowfall
. [cm]threshold_snowfall (float, default 1.0) – Hourly snowfall above which the row is fully covered for that hour. [cm/hr]
threshold_depth (float, default 1.0) – Snow depth on the ground, above which snow can affect the modules. [cm]
- Returns:
covered (Series) – A Series of boolean, True where the snowfall exceeds the defined threshold to fully cover the panel.
Notes
Implements the model described in [1] with minor improvements in [2].
snow_depth
is used to return False (not fully covered) when snow is less thanthreshold_depth
. This check is described in [2] as needed for systems with low tilt angle.References