Fix plots and provenance in Russell diagnostics

[schlunma]

Description

• Fixes #3478

• • *

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• [x] ☝ Create an issue to discuss what you are going to do

Checklist

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

New or updated recipe/diagnostic

• [x] 🧪 ~Recipe runs successfully~ Not the entire recipe, but at least the affected diags
• [x] 🧪 Recipe is well documented
• [x] 🧪 Figure(s) and data look as expected from literature
• [x] 🛠 Provenance information has been added

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[valeriupredoi]

@esmvalbot please run recipe_russell18jgr.yml

[esmvalbot[bot]]

Since @valeriupredoi asked, ESMValBot will run recipe recipe_russell18jgr.yml as soon as possible, output will be generated here

[esmvalbot[bot]]

ESMValBot is sorry to report it failed to run recipe recipe_russell18jgr.yml: exit is 1, output has been generated here