CCPP Framework Meeting Minutes 2020 04 09

Agenda

• need for standardized missing values from CCPP framework to use in CCPP physics?
• follow-up with NRL

Discussion

Standardized missing values from CCPP framework to use in CCPP physics

• should the framework dictate the values or can the host model set it?
• for integers, Steve found that huge() is the only reasonable value
• the framework can do that, should we have a new module for it
• do we need multiple standard names, one for each missing value depending on type and kind?
  • ccpp_missing_value_real_kind_phys
  • ccpp_missing_value_integer
  • ... ?
• Dom or Steve to create an issue on the ccpp-framework GitHub for further discussion

Follow-up with NRL

• Ligia and Laurie talked to Louisa; it will take more time to arrange transferring funds from NRL to DTC
• thus it needs to go from NRL to NCAR directly; Steve started discussing this at CGD

Automated unit conversion

• What about more complex conversion rates - precipitation rates to fluxes?
• This is not a unit conversion, but a derived variable calculation (will become available in cap_gen.py)
  • will require clear documentation on what variables are, what the meaning of "wet" is etc.
  • the framework can then use manually built, specific functions to perform conversions when a requested variable isn't provided, but enough variables are available to compute it