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Bug fix to Cloudsat near-surface precipitation diagnostics

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@dustinswales dustinswales released this 02 Aug 17:11
· 286 commits to master since this release

One important change regarding the treatment of land points in the Cloudsat near-surface precipitation diagnostics was made to be consistent w/ the original implementation of these diagnostics in COSP1.4, Kay et al. 2018 (DOI:10.1002/2017JD028213). For retrievals over land, the third vertical level above ground (960-1440m) is now used to calculate precipitation frequency based on CloudSat radar reflectivity. The second level (480-960m) is still used over the ocean.

For more information on these diagnostics -- see https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2017JD028213.

These diagnostics are also described as a part of new COSP2 in CESM2 documentation available here: https://github.com/CFMIP/COSPv2.0/wiki/COSP2-in-CESM2-Guidance