Adding a script to create smoothed ERA5 topography files #288
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…made it isca-friendly
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Here is a comparison of a topography file that previously existed made using the old script with one from the new script in this PR. There are numerical differences between the two however the maps look almost identical (using the same colourbar which I forgot to include). 
Plus a demonstration of the function as applied for a range of resolutions used in Isca: 
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This looks great to me @daw538 - thanks so much for re-writing this and getting it in. I don't have any particular comments, other than that I'm happy for it to go in the master whenever you're ready. |
Added README.md with information on topography source files and usage.
…lso provides a cleaner interface (though same output) as old script
sit23
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sit23
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I've made one tiny comment on the readme. But it looks great! I'm happy for it to be merged with that tiny tweak.
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Thanks @sit23 for the comment. I've edited the README as suggested. |
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Some of the test cases in Isca make use of a smoothed/filtered topography file constructed from the global topography ERA-Interim datasets. The original script used to create such files was never included into Isca's main repo and relies on methods that are either outdated (e.g. written in python2) or not broadly comparable across a range of hardware. The script provided in this PR provides a more updated but equivalent method for constructing files with a range of resolutions for Isca's different use cases.