Update to RRTMGP v1.7, GEOSradiation_GridComp v1.8.0

[mathomp4]

This is a meta-PR for updating the components in GEOSgcm to use RRTMGP v1.7 which requires an updated GEOSradiation_GridComp as well:

• RRTMGP v1.7
• GEOSradiation_GridComp v1.8.0

To run RRTMGP v1.7 you also need a change in GEOSgcm_App currently in a PR: GEOS-ESM/GEOSgcm_App#585

This is zero-diff for RRTMG runs, only changes RRTMGP runs.

Note also that RRTMGP v1.7 can be run in Single Precision mode with the CMake option:

-DRRTMGP_SINGLE_PRECISION=ON

Tests show that single-precision RRTMGP is about 10-20% faster than DP. But, for now we are keeping the default build to be double precision by default until further testing. Per @dr0cloud:

I have noticed around a -0.15W/m2 difference in global OSR in SP mode, but individual clouds can be -2 W/m2 or more.

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Updates from GEOSradiation_GridComp v1.7

The above v1.8 tag also brings along updates from v1.7. As listed in #756, this also has effects.

The first is a small change needed for ongoing OceanBioGeoChem work (#28). To use this completely needs updates in GEOSgcm_GridComp and GOCART. Contact @mfmehari for more information.

The second is an update for on-going validation of RRTMGP (#33). This adds a new CMake option, ENABLE_SOLAR_RADVAL which is default OFF. Enabling it will enable many new exports for validation purposes.

This update is non-zero-diff for RRTMGP but that is not run by default currently. For RRTMG they are either zero-diff or 'truncation zero-diff', but these changes should only affect diagnostic outputs. That said, the Solar Internal Restart will have some changes (see below) but the overall state of the model is zero-diff with RRTMG:

• Metadata changes (long_name)
  • CLDHISW: "high-level_cloud_area_fraction_rrtmg_sw_REFRESH" → "high-level_cloud_area_fraction_RRTMG_P_SW_REFRESH"
  • CLDLOSW: "low-level_cloud_area_fraction_rrtmg_sw_REFRESH" → "low-level_cloud_area_fraction_RRTMG_P_SW_REFRESH"
  • CLDMDSW: "mid-level_cloud_area_fraction_rrtmg_sw_REFRESH" → "mid-level_cloud_area_fraction_RRTMG_P_SW_REFRESH"
  • CLDTTSW: "total_cloud_area_fraction_rrtmg_sw_REFRESH" → "total_cloud_area_fraction_RRTMG_P_SW_REFRESH"
• Removed fields
  • TAUHIPAR
  • TAULOPAR
  • TAUMDPAR
  • TAUTTPAR
• Added fields
  • COTDENHIPAR
  • COTDENLOPAR
  • COTDENMDPAR
  • COTDENTTPAR
  • COTHIPAR
  • COTLOPAR
  • COTMDPAR
  • COTTTPAR
  • COTNUMHIPAR
  • COTNUMLOPAR
  • COTNUMMDPAR
  • COTNUMTTPAR