xclim.indicators.seaIce package

Submodules

xclim.indicators.seaIce._seaice module

Sea ice indicators

xclim.indicators.seaIce._seaice.sea_ice_area(siconc: Union[DataArray, str] = 'siconc', areacello: Union[DataArray, str] = 'areacello', *, thresh: Quantified = '15 pct', ds: Dataset = None) → DataArray

Sea ice area (realm: seaIce)

A measure of total ocean surface covered by sea ice.

This indicator will check for missing values according to the method “skip”. Based on indice sea_ice_area().

Parameters

siconc (str or DataArray) – Sea ice concentration (area fraction). Default : ds.siconc. [Required units : []]
areacello (str or DataArray) – Grid cell area (usually over the ocean). Default : ds.areacello. [Required units : [area]]
thresh (quantity (string or DataArray, with units)) – Minimum sea ice concentration for a grid cell to contribute to the sea ice extent. Default : 15 pct. [Required units : []]
ds (Dataset, optional) – A dataset with the variables given by name. Default : None.

Returns

sea_ice_area (DataArray) – Sum of ice-covered areas where sea ice concentration exceeds {thresh} (sea_ice_area) [m2], with additional attributes: cell_methods: lon: sum lat: sum; description: The sum of ice-covered areas where sea ice concentration exceeds {thresh}.

Notes

To compute sea ice area over a subregion, first mask or subset the input sea ice concentration data.

References

“What is the difference between sea ice area and extent?” - NSIDC [2008]

xclim.indicators.seaIce._seaice.sea_ice_extent(siconc: Union[DataArray, str] = 'siconc', areacello: Union[DataArray, str] = 'areacello', *, thresh: Quantified = '15 pct', ds: Dataset = None) → DataArray

Sea ice extent (realm: seaIce)

A measure of the extent of all areas where sea ice concentration exceeds a threshold.

This indicator will check for missing values according to the method “skip”. Based on indice sea_ice_extent().