climatology notebook - add Michael Hemming notebook

[lbesnard]

No description provided.

[tonybaloney]

The dependencies line in the first cell should also include h5netcdf, without this the cell to load into xarray will fail with this error:

ValueError: found the following matches with the input file in xarray's IO backends: ['h5netcdf']. But their dependencies may not be installed, see:
https://docs.xarray.dev/en/stable/user-guide/io.html 
https://docs.xarray.dev/en/stable/getting-started-guide/installing.html