Add Field sampling tutorial v4

[reint-fischer]

I have rewritten the Field sampling tutorial to work with v4 and added it back into the documentation. To do so I needed to change the FieldSet from Peninsula.nc to the Copernicus Marine dataset, which also contains a temperature field. I have also adapted the tutorials to import the kernels using parcels.kernels as per #2309.

There was some unexpected behavior from the delayed particle release, with not all initial values being sampled, which I plan to look into in conjunction with the repeatdt tutorial.

[VeckoTheGecko]

(will do a full review tomorrow)* Could we update the workflow in pixi.toml along the lines of

# in pixi.toml
[feature.test.tasks]
tests = "pytest"
-tests-notebooks = "pytest --nbval-lax -k 'argo' docs/examples"
+tests-notebooks = "pytest --nbval-lax -k 'argo or tutorial_output' docs/examples"

so the workflows are run?

*Didn't get around to it today, will try Friday

[reint-fischer]

Thanks for the comments, I have implemented your feedback. In discussion with @erikvansebille I have added a folder “examples_v3” to store the v3 notebooks and examples. As we move them to v4, I will re-add them to the “examples” folder so that pixi run tests-notebooks tests them. Please let me know if you have other thoughts on adding this folder.

I have added all the example python scripts to “examples_v3” too, because they were failing, but I wasn’t sure whether you had already rewritten them, so please let me know if I should add them back to “examples”.

The tutorial_Argofloats.ipynb now fails for me with the error:

Notebook cell execution failed
Cell 1: Timeout of 5 seconds exceeded waiting for output.

Do you know what to do about this?

[VeckoTheGecko]

looks good :)