Add capability to run the JEDI LETKF DA in land-offline_workflow

[tsga]

Describe your changes

Adds capability to run LETKF DA (full ensembles) in the land offline workflow. The codes for the other DA methods 2DVar and LETKF-OI remain the same (and old tests works as they are). The changes from these PRs are preparing input files for JEDI letkf (and vector to tile, add jedi increment) executables in ensemble form.

A submodule for generating ensemble forcing using the Stochastic Physics module is added here (https://github.com/tsga/stochastic_physics/tree/lnd_ens)

Related PRs

• Add ensemble capability to run the JEDI LETKF DA in land-DA_update land-DA_update#27

• (merged) Feature/lnd ens land-apply_jedi_incr#6

Test output

This PR doesn't change the current tests and it passes the 2DVar (GHCN + IMS) test

Additional test set for LETKF with 20 ensemble members prepared.

Checklist before requesting a review

• My branch being merged is up to date with the latest develop.
• I have performed a self-review of my code by examining the differences that will be merged.
• I have not made any unnecessary code changes / changed any default behavior.
• My code passes the DA_IMS_test, or differences can be explained.

[ClaraDraper-NOAA]

Can you please remove all the directory values that are pointing to your directories?

For output directories, we can set a default using $USER. For input directories, any necessary data should be in either my DA_test_cases or on the LAND directory.

[tsga]

Can you please remove all the directory values that are pointing to your directories?

For output directories, we can set a default using $USER. For input directories, any necessary data should be in either my DA_test_cases or on the LAND director

Resolved