earthkit.climate.atmos.synoptic.jetstream_metric_woollings

earthkit.climate.atmos.synoptic.jetstream_metric_woollings(ua: xarray.DataArray | str = 'ua', ds: xarray.Dataset | Any = None, **kwargs: Any) → Any

Strength and latitude of jetstream.

Identify latitude and strength of maximum smoothed zonal wind speed in the region from 15 to 75°N and -60 to 0°E, using the formula outlined in :cite:p:`woollings_variability_2010`. Wind is smoothened using a Lanczos filter approach.

Units:

• jetlat: degrees_north

• jetstr: m s-1

This function wraps xclim.indicators.atmos.jetstream_metric_woollings.

Parameters:

• ua (xarray.DataArray | str) – Eastward wind component (u) at between 750 and 950 hPa.

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

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

Returns:

The computed index.

Return type:

Any