improver.precipitation.snow_probability_at_surface module

Plugin to construct the probability that snow could occur at the surface

class SnowProbabilityAtSurface

Bases: BasePlugin

Plugin to calculate the probability that snow could be being present at the surface.

The probability is calculated by looking at the wet bulb temperature integral at the surface. If the wet bulb temperature is 0 Kelvin metres then the probability of snow is set to 1. If it is greater than 225 Kelvin metres then the probability is set to zero. For values in between 0 and 225, the probability varies linearly. Where the wet bulb temperature data is masked the output will be masked.

_abc_impl = <_abc._abc_data object>

process(wet_bulb_temp_int_at_surf)

Generate a probability that snow could be present at the surface based on input wet bulb temperature integral at surface.

Parameters:

wet_bulb_temp_int_at_surf (Cube) – A cube of wet bulb temperature integral at the surface

Return type:

Cube

Returns:

Probability of snow occuring at surface.