Add comment to smc pert unit & fix bug in stc pert

[yuanxue2870]

In response to Issue (https://github.com/NOAA-PSL/stochastic_physics/issues/71), two edits are made in this PR:

1. Add a comment to "smc" perturbation unit, which will be helpful for new users to distinguish from actual "smc" unit commonly used in the model.
2. Fix perturbation calculation in "stc" related part as pert*tfactor_state.

[pjpegion]

Is there a PR at the ufs-weather-model level? And will this change a regression test baseline?

[yuanxue2870]

Is there a PR at the ufs-weather-model level? And will this change a regression test baseline?

Thanks for the follow-up inquiries.

• No, I did not put a PR at the ufs-weather-model. Do I need to create one? Please advise when you get a chance.
• (Please feel free to correct me if I am wrong). No, there is no regression test perturbing "stc" based on what I have seen so far. Therefore, there will be no change in the regression test baseline.

[pjpegion]

yes, please create an github issue at https://github.com/ufs-community/ufs-weather-model/issues and issue a PR there for the update to the stochastic physics submodule.

[yuanxue2870]

yes, please create an github issue at https://github.com/ufs-community/ufs-weather-model/issues and issue a PR there for the update to the stochastic physics submodule.

Done. Thanks.

[SamuelTrahanNOAA]

This pull request's branch head does not match the ufs-weather-model stochastic_physics submodule HEAD.

Your branch has:

• 2afb1f4d04e4a34f8023882f6ba0777528059985

The submodule hash from https://github.com/ufs-community/ufs-weather-model/pull/2043 is:

• 5bf998e65f3aba07b99a7900b9ffc31537a5c1d9

Which is not in the repository.

Did you forget to push your latest changes?

[SamuelTrahanNOAA]

I'm pinging @jkbk2004 so he is aware of the hash mismatch

[yuanxue2870]

This pull request's branch head does not match the ufs-weather-model stochastic_physics submodule HEAD.

Your branch has:

• 2afb1f4

The submodule hash from ufs-community/ufs-weather-model#2043 is:

• 5bf998e65f3aba07b99a7900b9ffc31537a5c1d9

Which is not in the repository.

Did you forget to push your latest changes?

Hi Sam,

Thanks for the heads up! Sorry for the inconveniences.

As I am fairly new to Github, I think I may have some issues pushing my changes to the submodule at the ufs-weather-model level. I am not sure about the best practice to do this. If you could give me some advice, that would be greatly appreciated.

I first cloned/forked the lasted stochastics_physics and commit and push changes, the hash is 2afb1f4 at the stochastics_physics level.

Then I cloned/forked the lasted ufs-weather-model separately and commit and push my changes to the submodule again, which seems to change the hash to 5bf998. I did try to switch the .gitmodule to point to my branch, but does not seem to work.

Thanks for your help!

Best, Yuan

[SamuelTrahanNOAA]

@yuanxue2870 - This page will show you the changes in this pull request. Can you please look at them and tell us if these are the correct changes?

https://github.com/NOAA-PSL/stochastic_physics/pull/70/files

If the changes on that page are correct, I can use the 2afb1f4 version.

[yuanxue2870]

@yuanxue2870 - This page will show you the changes in this pull request. Can you please look at them and tell us if these are the correct changes?

https://github.com/NOAA-PSL/stochastic_physics/pull/70/files

If the changes on that page are correct, I can use the 2afb1f4 version.

These are the exact changes. Please use the 2afb1f4 version.

Thanks, Yuan

[SamuelTrahanNOAA]

Excellent. I will begin testing the combined pull request now.

[jkbk2004]

@pjpegion all tests are done. we can move to merge this pr. can you merge this pr?

[jkbk2004]

Thanks, @pjpegion !