pvlib.snow.fully_covered_nrel¶
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pvlib.snow.
fully_covered_nrel
(snowfall, threshold_snowfall=1.0)[source]¶ Calculates the timesteps when the row’s slant height is fully covered by snow.
Parameters: - snowfall (Series) – Accumulated snowfall in each time period [cm]
- threshold_snowfall (float, default 1.0) – Hourly snowfall above which snow coverage is set to the row’s slant height. [cm/hr]
Returns: boolean (Series) – 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].
References
[1] Marion, B.; Schaefer, R.; Caine, H.; Sanchez, G. (2013). “Measured and modeled photovoltaic system energy losses from snow for Colorado and Wisconsin locations.” Solar Energy 97; pp.112-121. [2] Ryberg, D; Freeman, J. “Integration, Validation, and Application of a PV Snow Coverage Model in SAM” (2017) NREL Technical Report NREL/TP-6A20-68705