Global 10 arc-minute resolution grids of topography (ETOPO1 ice-surface) referenced to mean sea-level.

These are the changes made to the original dataset.

• Convert the grid from the ASCII format of ICGEM to CF-compliant netCDF.
• Add relevant metadata, including names, units, datum, etc.
• Fix grid coordinates to be generated by numpy.linspace instead numpy.arange (or the equivalent used by ICGEM internally) to guarantee equal spacing to a higher accuracy.
• Export to compressed netCDF.

This is a place to format and prepare the original dataset for use in our tutorials and documentation.

We include the source code that prepares the datasets for redistribution by filtering, standardizing, converting coordinates, compressing, etc. The goal is to make loading the data as easy as possible (e.g., a single call to pandas.read_csv or xarray.load_dataset). Whenever possible, the code also downloads the original data (otherwise the original data are included in this repository).

💡 Tip: The easiest way to download this dataset is using Pooch, particularly to download straight from the DOI of a release.

See our Contributing Guidelines for information on proposing new datasets and making changes to this repository.

All Python source code is made available under the BSD 3-clause license. You can freely use and modify the code, without warranty, so long as you provide attribution to the authors.

Unless otherwise specified, all data files and figures created by the code are available under the Creative Commons Attribution 4.0 License (CC-BY).

See LICENSE.txt for the full text of each license.

The license for the original data is specified in this README.md file.