Code additions for alternate g-point cloud optics #300
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… API (earth-system-radiation#284) Accumulated changes and bug fixes. Changes LW answers (data repo is alsoupdated). - New LW weights and secants (Change LW quadrature angles earth-system-radiation#282) - A single source function on levels (Simplify LW source functions earth-system-radiation#250) - Kernel API header files in Fortran and C (Add kernel API earth-system-radiation#272) - Refactored two-stream, fixing RTE shortwave kernel not vectorizing earth-system-radiation#215 (Re-vectorize SW two-stream earth-system-radiation#275) - Buxfixes, change to internal build systems and continuous integration (thanks to @skosukhin for ongoing help)
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@mjiacono Two requests.
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See also earth-system-radiation/rrtmgp-data#7 |
RobertPincus
deleted the branch
earth-system-radiation:hotfix-relabel-ice-sizes
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This PR includes code revisions to input and use alternate g-point cloud optics input data. The all-sky example test case was revised to demonstrate the new capability.
Longwave and shortwave flux profile comparisons (between band and g-point clouds optics) were completed for the tropical and mid-latitude winter atmospheric profiles using two cloud cases, one an all liquid low cloud and one an all ice mid-level cloud. The graphics below illustrate impacts of up to one percent in the shortwave liquid cloud case, with smaller impacts in the longwave and in the ice cloud case.
A comparison was also completed between shortwave flux calculations using the RRTMGP band and g-point cloud optics and the LBLRTM shortwave cloudy flux calculations of Lu et al. (2011; https://doi.org/10.1175/JAS-D-10-05001.1). The LBLRTM fluxes from Table 3 of that paper and the comparable results from RRTMGP are shown in the table below. This comparison is not optimized, since small differences in TSI, cloud physical properties, gaseous absorption coefficients, or other parameters may be present.