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Add variable rescaling for aerosol species #1339

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@andytangborn andytangborn commented Oct 18, 2024

This is a draft PR for additions to chem_diagb.h that could allow for a variable rescaling (rs) for each aerosol species. It does not yet include a way to read the values in from a yaml or config file. The it compiles and runs, but I have not yet tested it using 3dvar. And it still has lots of print statements used for testing. It runs in about 40 seconds at C96, and is probably slowed down by the print statements. Any comments will be helpful.

Also, note the if statement. I was unsure of the dimensions of an array, so I put in a test. I'll remove it along with the print statements.

… aerosol species. Does not yet include a way to read the values in from a yaml or config file.
if (fullConfig.has("rescale")) {
double rescale;
fullConfig.get("rescale", rescale);
util::multiplyFieldSet(bkgErrFs, rescale);
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What about using multiplyFieldSets? I think this would require creating a 3D array of values in a new field set, but that would then set us up for the ability to scale by height/latitude/location at a later date. Thoughts?

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I can look at it and see how that would work. It took me some time to make something that could run....

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I did try multiplyFieldSets, but had trouble getting it to compile.

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I wonder if we just read in another 'state' that is the scaling factors and be proactive on the 3D front?

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So have a file with the scaling factors, and read it in from there?

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I think so, that way we can easily scale by lat,lon,height and species

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Oh, I think I understand. A full background state file, filled with rescaling values for each aerosol species and at all locations. I'd like to try just 14 values first and see if we can do better.

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yeah they can be constant in x,y,z to start

@andytangborn andytangborn marked this pull request as ready for review November 14, 2024 20:20
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2 participants