Update README.md

README.md

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-license: other
-license_name: cc-by-sa-4.0
-license_link: https://creativecommons.org/licenses/by-sa/4.0/deed.en
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+---
+license: other
+license_name: cc-by-sa-4.0
+license_link: https://creativecommons.org/licenses/by-sa/4.0/deed.en
+size_categories:
+- 10K<n<100K
+---
+
+[Dynamic EarthNet dataset](https://arxiv.org/abs/2203.12560) redistributed from https://mediatum.ub.tum.de/1650201 and https://cvg.cit.tum.de/webshare/u/toker/dynnet_training_splits/ under a common tarball for simpler download speeds.
+Individual zip files were replaced with tarballs instead.
+
+For attribution and license see: https://mediatum.ub.tum.de/1650201