earthkit.climate.atmos.temperature.degree_days_exceedance_date

earthkit.climate.atmos.temperature.degree_days_exceedance_date(tas: xarray.DataArray | str = 'tas', ds: xarray.Dataset | Any = None, *, thresh: Any = '0 degC', sum_thresh: Any = '25 K days', op: Literal['>', 'gt', '<', 'lt', '>=', 'ge', '<=', 'le'] = '>', after_date: str | None = None, never_reached: str | int | None = None, freq: str = 'YS', **kwargs: Any) → Any

Degree day exceedance date.

The day of the year when the sum of degree days exceeds a threshold, occurring after a given date. Degree days are calculated above or below a given temperature threshold.

Units:

  • degree_days_exceedance_date: dimensionless

This function wraps xclim.indicators.atmos.degree_days_exceedance_date.

Parameters:

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

  • thresh (Any) – Threshold temperature on which to base degree-days evaluation.

  • sum_thresh (Any) – Threshold of the degree days sum.

  • op (Literal[``’>’, ``'gt', '<', 'lt', '>=', 'ge', '<=', 'le']) – If equivalent to ‘>’, degree days are computed as tas - thresh and if equivalent to ‘<’, they are computed as thresh - tas.

  • after_date (str | None) – Date at which to start the cumulative sum. In “MM-DD” format, defaults to the start of the sampling period.

  • never_reached (str | int | None) – What to do when sum_thresh is never exceeded. If an int, the value to assign as a day-of-year. If a string, must be in “MM-DD” format, the day-of-year of that date is assigned. Default (None) assigns “NaN”.

  • freq (str) – Resampling frequency. If after_date is given, freq should be annual.

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

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

Returns:

The computed index.

Return type:

Any