polartoolkit.fetch.ice_vel

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polartoolkit.fetch.ice_vel#

ice_vel(region=None, spacing=None, registration=None, hemisphere=None, epsg=None, **kwargs)[source]#

MEaSUREs Phase-Based Ice Velocity Maps for Antarctica and Greenland.

Antarctica: version 1 from Mouginot et al.[1] and Mouginot et al.[2].

accessed from https://cmr.earthdata.nasa.gov/virtual-directory/collections/C3298047930-NSIDC_CPRD Data part of https://doi.org/10.1029/2019GL083826

Greenland: version 1 from MEaSUREs Multi-year Greenland Ice Sheet Velocity Mosaic, Version 1[3]

accessed from https://cmr.earthdata.nasa.gov/virtual-directory/collections/C3291956575-NSIDC_CPRD

Units are in m/yr

Requires an EarthData login, see Tutorials/Download Polar datasets for how to configure this.

Parameters:

  • region (tuple[float, float, float, float], optional) – region to clip the loaded grid to, in format [xmin, xmax, ymin, ymax], by default doesn’t clip

  • spacing (float, optional,) – grid spacing to resample the loaded grid to, by default is 5km for Antarctica (original data is 450m), and 250m for Greenland

  • registration (str, optional) – change registration with either ‘p’ for pixel or ‘g’ for gridline registration, by default is None.

  • hemisphere (str, optional) – choose which hemisphere to retrieve data for, “north” or “south”, by default None

  • epsg (str | None) – choose which region to retrieve data for, either “3031” or “3413”, by default None

  • kwargs (Any) – additional keyword arguments to pass to resample_grid

Returns:

Returns a calculated grid of ice velocity in meters/year.

Return type:

xarray.DataArray

References

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