Global topography (referenced to sea-level) in a 10 arcminute resolution grid

Related tags

Geolocationearth-topography-10arcmin
Overview

Earth - Topography grid at 10 arc-minute resolution

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

Global map of topographic height.

Summary
File earth-topography-10arcmin.nc
Size 2.7 Mb
Version v1
DOI https://doi.org/10.5281/zenodo.5882203
License CC-BY
MD5 md5:c43b61322e03669c4313ba3d9a58028d
SHA256 sha256:e45628a3f559ec600a4003587a2b575402d22986651ee48806930aa909af4cf6
Source ETOPO1 (grid generated by the ICGEM calculation service)
Original license public domain
Processing code prepare.ipynb

Changes made

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.

About this repository

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.

Contributing

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

License

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.

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Releases(v1)

  • v1(Jan 20, 2022)

    Date: 2022/01/20

    DOI: https://doi.org/10.5281/zenodo.5882203

    Note: This is a processed and formatted version of the source dataset below. It's meant for use in documentation and tutorials of the Fatiando a Terra project. Please cite the original authors when using this dataset.

    Data source: ETOPO1 (grid generated by the ICGEM calculation service)

    Changes:

    • 🎉 First release of the curated version of the global topography grid.

    | | Checksums | |--:|:--| | MD5 | md5:c43b61322e03669c4313ba3d9a58028d | | SHA256 | sha256:e45628a3f559ec600a4003587a2b575402d22986651ee48806930aa909af4cf6 |

    Source code(tar.gz)
    Source code(zip)
    earth-topography-10arcmin.nc(2.61 MB)
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