Open yantosca opened 3 months ago
Agreed. It would be great to agree on a standard table format.
First let's agree on what optical properties we need and make that a standard record.
Second, we need to establish the degrees of freedom (does each aerosol type that is transported (i.e., kg per cell) have unique optical properties (unlikely) or depend on added water? or history of water? Does GEOS Chem keep track of hysteresis (is the RH going up or down?)
For Cloud-J my interest is primarily in the first standard: for the std wavelength bins Fast-J needs: m^2/kg (extinction optical size) or else m^2/kg where m^2 = integral pi*r^2 and Q = ratio of optical area to real area. SSA = pomega-0 = single scat albedo P1-P7 = terms in Legendre expansion of scattering phase function. That is all.
Here are few links for easy reference to tables. I chose SO4 here for simplicity:
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Name: Bob Yantosca Institution: Harvard + GCST
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New GEOS-Chem feature or discussion
I am creating this issue as a placeholder so we don't lose sight of it. There is currently a disconnect in the optical properties uses by the photolysis schemes (FAST-JX and Cloud-J) and the radiative transfer model (RRTMG).
@lizziel wrote:
Also it might be nice to see if we could adopt a common file format (such as YAML) for aerosol look-up tables, which would make the configuration files more clear and readable.
Tagging @randallvmartin @djxjacob @beckyalexander @theloniuspunk @wporter