earthkit.climate.atmos.temperature.latitude_temperature_index

earthkit.climate.atmos.temperature.latitude_temperature_index(tas: xarray.DataArray | str = 'tas', lat: xarray.DataArray | str = 'lat', ds: xarray.Dataset | Any = None, *, freq: str = 'YS', **kwargs: Any) → Any

Latitude temperature index.

A climate indice based on mean temperature of the warmest month and a latitude-based coefficient to account for longer day-length favouring growing conditions. Developed specifically for viticulture. Mean temperature of warmest month multiplied by the difference of latitude factor coefficient minus latitude. Metric originally published in Jackson, D. I., & Cherry, N. J. (1988).

Units:

  • lti: dimensionless

This function wraps xclim.indicators.atmos.latitude_temperature_index.

Parameters:

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

  • lat (xarray.DataArray | str) – Latitude coordinate. If None, a CF-conformant “latitude” field must be available within the passed DataArray.

  • freq (str) – Resampling frequency.

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

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

Returns:

The computed index.

Return type:

Any