Correct iris faulty generation of altitude bounds when reading files with hybrid height coordinate

MetOffice / cube_helper

A Python module, for easier manipulation of Cubes with Iris

https://cube-helper.readthedocs.io/

BSD 3-Clause "New" or "Revised" License

2 stars 4 forks source link

Correct iris faulty generation of altitude bounds when reading files with hybrid height coordinate #39

Open matthew-mizielinski opened 4 years ago

matthew-mizielinski commented 4 years ago

There is a long running discussion around whether the bounds on the vertical coordinate are being appropriately set on CMORised data; PCMDI/cmor#177 and SciTools/iris#3678.

At present any iris v2 code will give spurious bounds as it won't read in the b_bounds (a.k.a. sigma bounds) due to the lack of variable attributes. This leads to invalid altitude bounds over orography as the point values are used instead.