Interim Aerosol Collection Changes for FP

[acollow]

This PR includes changes to the HISTORY templates for FPP and FP in regards to the aerosol collections.

1. The aer_Nx collection has been reverted back to 3 hourly time averaged as opposed to 1 hourly instantaneous
2. The adg_Nx collection has been reverted back to 3 hourly time averaged as opposed to 1 hourly time averaged
3. Aerosol fields were added back into the instantaneous 1 hourly hyperwall collection

File spec changes are still present through the addition of new variables and a few variable name changes affiliated with GOCART-2G. Please keep me posted with the status of including this into FPP so that I can take a look at a sample output file to be sure everything looks good.

[mathomp4]

@acollow @rtodling Oooh boy. You are reversing a lot of things in AGCM.rc.tmpl. Is that all needed?

For example the @MODELATM in:

@MODELATMAIAU_IMPORT_RESTART_FILE

is needed to support the Data Atmosphere work of @mfmehari

If these are removed the data atmosphere setup is most likely fully broken. If you can't handle this at this time, those changes should go on a branch, but I'm not sure we can break develop and data atmosphere like that.

@sshakoor1 and myself could work with @gmao-jstassi if need be to help fix up fvsetup and GEOSdas.csm

[acollow]

I based this off of the tag being used to FPP, and should not be merged into develop. I need to follow up with @rtodling on which branch it actually should merged into since I wasn't sure what the appropriate branch was from a first glance.

[mathomp4]

@acollow It looks like the tavg3_2d_adg_Nx- collections are conservative but the tavg3_2d_adg_Nx+- ones are not.

Should they be consistent? (Note: I don't know what - vs +- means, so maybe + means not conservative?)

[acollow]

I don't know what +/- means either but my best guess is analysis vs forecast. I will check with Arlindo when he is back next week since I only manipulated the variables that are getting written and left everything else as is.

[rlucches]

The + notation indicates a file that is going to be written in "forecast" mode, i.e, beyond the 6-hour section of the IAU. There would be no reason to have one of these conservative and one of them not.

[mathomp4]

As this is an ADAS branch, I've moved the CODEOWNERS to be @GEOS-ESM/adas-gatekeepers since @rtodling should be able to approve and merge FP things