[Feature]: Add new land variable handlers for supporting ILAMB

[chengzhuzhang]

Is your feature request related to a problem?

As discussed at meetings with land developers, right now only a subset of ilamb required variables can be handled by zppy through e3sm_to_cmip. @dmricciuto provided a conversion table that from CLM2 /home/ac.ricciuto/models/ilamb_processing/alm2ilamb_wkflow/clm_to_mip

I don’t know if the listed variables are still relevant. Before implementing into e3sm_to_cmip, we need a land develop to have a review. @thorntonpe hey Peter, could you recommended someone? We get multiple requests from land team to produce more CMIP variables from zppy. Pinging, @hydrotian @evasinha @daliwang @qzhu-lbl ...

As a reference, here listed land variables we already supported.

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

Additional context

No response

[evasinha]

@chengzhuzhang I am happy to help with the review. Please let me know how you want me to proceed.

[chengzhuzhang]

Thank you @evasinha ! Could you go through the variable list here /home/ac.ricciuto/models/ilamb_processing/alm2ilamb_wkflow/clm_to_mip, and add relevant variables to the table here from row 28?
And we can then start change the e3sm_to_cmip code for implementing the new variables handlers.

[evasinha]

@chengzhuzhang I have added additional land variables to the table.

[chengzhuzhang]

@evasinha Thanks! Could you also take care removing duplicated entries from row 28, and resolve conflict formula? I notice for example LAI has different conversion formula somehow. Finally I realized the original table missed a unit column. It would be great if you can add it.

[thorntonpe]

I met today with Nate Collier (part of the iLAMB team) to get the full list of variables that they need, the units they expect, and the descriptions of the variables. I am iterating with him on a couple outstanding questions, and then I will compare my notes against the table linked above. I have a note that some help is needed generating the variable handlers in e3sm_to_cmip. Once we have the full list of iLAMB variables confirmed I can circle back to that. Note that there will be a difference between the variables we want for time series and mapped diagnostics, and the ones needed for iLAMB. I should be able to provide more feedback after confirming the iLAMB list.

[chengzhuzhang]

@thorntonpe thanks for the updates!
Regarding to the list of variables for time series and maps, the variables put together for mapps generated by e3sm_diags was from a separate practice. For the time series plots in zppy, we can try generating some prioritized land variables and to generalize for more if needed.

[evasinha]

@chengzhuzhang

1. I have removed duplicate rows where there was no conflict in formula. When the formula were different I have kept the duplicate row but added a note saying different formula.
2. I have added a column for CMIP units.

[chengzhuzhang]

@evasinha Thank you for updating the table! We will be able to start the code change once get reviewed and confirmed by Peter.