Revise forcing specifications for single forcing compsets

[wlin7]

Revisions to single-forcing compsets' forcing specification focusing on
where to include the GHG warming contribution of CH4, N2O, and O3 due to
v3atm's interactive chemistry.

Core to the changes is to separate the transient aerosol and chemical precursors for different
single forcing compsets. New virtually transient forcing files are introduced to satisfy the unified data
stream control for surface and elevated emissions. Historical evolution of stratospheric ozone
is moved from the all-else configuration to the GHG only configuration.

Fixes #6837

[BFB] non-BFB only for single forcing compsets
[NML] Different only for single forcing compsets

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Related info

• Summary of 11/20/24 discussion on the current set of single-forcing simulations

• Break down the forcings for the revision

Review Guide

Revision to composition of forcings (changes in dark red)

No changes for hist-nat, hist-ozone, hist-lulc, and hist-volc. hist-ozone is limited to stratospheric zone changes.

[mahf708]

I think all single-forcing compsets should be updated in sync; otherwise, they should be deleted.

[rljacob]

Please create an issue describing the problem.

[wlin7]

I think all single-forcing compsets should be updated in sync; otherwise, they should be deleted.

Sure, @mahf708 . All will be updated. Some modified forcing files (in time varying format) are not ready. Decision on treatment of ozone, esp. stratospheric is also to be made.

[wlin7]

Per @keziming and @tangq , C10H16 (MTERP) is a precursor gas for VBS-aerosol not a UCI-chemistry reactant. Keep it at 1850 level for hist-GHG and use its historical evolution for hist-aer.

[wlin7]

Hello reviewers, this PR is ready for review and testing. Please refer to the review guide in the PR description. Thanks.
Pinging @golaz @tangq @mahf708 @kaizhangpnl @keziming

[mahf708]

approving

a minor suggestion for additional review of the monoterpene setting by colleagues

[mahf708]

I believe this monoterpene (C10H16) specification is okay as-is. However, I strongly recommend a review from Kai, Mingxuan and Hailong before adopting this as they know this stuff much more than me ... cc @mingxuanwupnnl @kaizhangpnl @hwangacme

[tangq]

@wlin7 , thanks for putting these changes together. They look great to me. Thanks!

[golaz]

The revised partitioning of the various forcings between hist-GHG, hist-aer, hist-xGHG-xaer looks fine and is consistent with what we discussed, including separation between chemical and aerosol precursors. I have not checked the details of the implementation and xml changes.

[rljacob]

For the record, how was this tested? Also, please create an issue describing the problem. All the v3.0 bugs should have issues for them.

[kaizhangpnl]

All looks good to me.

PS: We need to output the green house gas concentrations if they are varying in the simulation.

[wlin7]

For the record, how was this tested? Also, please create an issue describing the problem. All the v3.0 bugs should have issues for them.

@rljacob , the issue is now described in #6837. As for the test, did you mean something for the nightly? Don't have yet. If you meant the settings themselves, it was done by inspecting the settings in use_case files against the intended specifications (and the revision this time around).