ESACCI SNOW CMORizer

[axel-lauer]

Description

This PR adds a downloading and a formatting script for the ESACCI SNOW v2.0 dataset. The following two variables are processed:

• daily snow area fraction (snc)
• daily snow water equivalent (snw)

Checklist

It is the responsibility of the author to make sure the pull request is ready to review. The icons indicate whether the item will be subject to the 🛠 Technical or 🧪 Scientific review.

• [x] 🛠 This pull request has a descriptive title
• [ ] 🛠 Code is written according to the code quality guidelines
• [x] 🛠 Documentation is available
• [ ] 🛠 Tests run successfully
• [x] 🛠 The list of authors is up to date
• [x] 🛠 All checks below this pull request were successful

New or updated data reformatting script

• [x] 🛠 Documentation is available
• [x] 🛠 The dataset has been added to the CMOR check recipe
• [ ] 🛠 The dataset has been added to the shared data pools of DKRZ and Jasmin by the @ESMValGroup/OBS-maintainers team
• [x] 🧪 Numbers and units of the data look physically meaningful