Need standard for denoting fixed fields in settings.json

[acordonez]

While working with the water mass transformation POD in cmec-driver, I ran into an issue with generating the file name for "areacello". Since this is a fixed field, it does not have a "frequency" in settings.jsonc. However, in the MDTF file structure all input variable file names, including those for fixed fields, include a frequency.

I found an existing example of one usage of "areacello" (ocean grid cell area) in the MDTF Tropical Pacific Sea Level POD. In this case, the frequency for all variables is "mon", set under the data/frequency keys.

However, the mixed layer depth POD shows another method of recording frequency which is to provide it for each variable separately. In this case, is it still reasonable to use "mon" for areacello even though it is a fixed variable?

It would be helpful to add language to the MDTF/CMEC standards for the "frequency" of fixed fields.

[acordonez]

The MDTF Diagnostics packages uses "static" for their fixed field variables. Closing.