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Reff in AerosolCoeff.CMAQ tables #130
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This is a drafted branch with proposed fix: Unfortunately, a lot of hard-coded parameters are required in function cmaq_aerosol_size, based on over-simplified assumptions:
I have not complied the code, so it is not ready for testing (especially the parameter definition part) but just to show the concept for now. Any suggestions are welcome. |
Can you create a draft PR so I can start putting code-specific comments? |
Yes! I just created a PR: https://github.com/JCSDA-internal/ufo/pull/3283 And I agree with you we should not replace the default gocart_aerosol_size. |
In CAMQ aerosols coefficient tables, there are a total 35 effective radii for each species, and the radii of all 8 species are indentical:
This implies that these are not RH-scaled Reff (i.e. the hydrophilic growth factors should be different for different species). Therefore, Reff/RH in CMAQ table cannot be used as the Reff/RH in CRTM default tables for interpolating effective radius, as in function
gocart_aerosol_size
https://github.com/JCSDA-internal/ufo/blob/7ebbdc3f5e3de367b9a7f60a13f9bc43b13161a3/src/ufo/operators/crtm/ufo_crtm_utils_mod.F90#L1708. This is causing an issue in JEDI (noticed by @PatNichols) in recent V8 release, with the new CMAQ capability
Question to the CMAQ table deliveree :
Yingtao @YingtaoMa, how did you adjust the effective radius when adopting the CMAQ table? What are the assumed hydrophilic growth factors of different species? Thanks.
Possible fix to the V8 release:
gocart_aerosol_size
with a new function to compute Reff based on atm%RH, in the CMAQ option: https://github.com/JCSDA-internal/ufo/blob/7ebbdc3f5e3de367b9a7f60a13f9bc43b13161a3/src/ufo/operators/crtm/ufo_crtm_utils_mod.F90#L1577Any suggestions or insights are welcome! @jeromebarre @YingtaoMa @BenjaminTJohnson. Thank you!
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