earthkit.climate.atmos.cold_spell_frequency

earthkit.climate.atmos.cold_spell_frequency(tas: xarray.DataArray | str = 'tas', ds: xarray.Dataset | Any = None, *, thresh: Any = '-10 degC', window: int = 5, freq: str = 'YS-JUL', op: Literal['<', 'lt', '<=', 'le'] = '<', resample_before_rl: bool = True, **kwargs: Any) → Any

Cold spell frequency.

The frequency of cold periods of N days or more, during which the temperature over a given time window of days is below a given threshold.

Units:

• cold_spell_frequency: dimensionless

This function wraps xclim.indicators.atmos.cold_spell_frequency.

Parameters:

• tas (xarray.DataArray | str) – Mean daily temperature.

• thresh (Any) – Threshold temperature below which a cold spell begins.

• window (int) – Minimum number of days with temperature below the threshold to qualify as a cold spell.

• freq (str) – Resampling frequency.

• op (Literal[``’<’, ``'lt', '<=', 'le']) – Comparison operation. Default: “<”.

• resample_before_rl (bool) – Determines if the resampling should take place before or after the run.

• ds (xarray.Dataset | Any) – Input dataset.

• **kwargs (Any) – Additional keyword arguments.

Returns:

The computed index.

Return type:

Any