compile a list of requirements for coupling component models

[LenkaNovak]

We have a unified interface for coupling component models, which needs to be formalized in the documentation. We would also like to require certain standalone run benchmarks:

• demonstrating a global simulation with other components prescribed

• global conservation checks

• performance benchmark in the coupler

• Coupler variables:

• T_S = surface temperature [K], req. for

  • radiative flux calculation (atmosphere), turbulent flux calculation (atmosphere or coupler)

• z0m_S and z0b_S= roughness length for momentum and buoyancy [m], req. for

  • turbulent flux calculation (surface -> atmosphere or coupler)

• ρ_sfc = [], req. for

  • turbulent flux calculation (surface + atmos -> atmosphere or coupler)

• q_sfc = [], req. for

  • turbulent flux calculation (surface + atmos (ρ_sfc) -> atmosphere or coupler)

• albedo = [], req. for

  • radiative flux calculation (surface -> atmosphere)

• beta = [], req. for

  • turbulent flux calculation (surface -> atmosphere or coupler)

• F_turb_energy = sensible + latent heat fluxes consistent with our total energy formulation [], req. for

  • boundary conditions for component models (atmosphere or coupler -> component models)

• F_turb_moisture = evaporation [], req. for

  • boundary conditions for component models (atmosphere or coupler -> component models)

• F_turb_ρτxz and F_turb_ρτyz = drag in the zonal and meridional directions [], req. for

  • boundary conditions for component models (atmosphere or coupler -> component models)

• F_radiative = surface radiation fluxes [W/m^2], req. for

  • boundary conditions for component models (atmosphere -> component models)

• P_liq and P_snow = precipitation of water and snow [], req. for

  • surface accumulation, conservation of water (atmosphere -> surface models)

• F_radiative_TOA = top-of-amtosphere radiative fluxes [W/m^2], req. for

  • diagnostics (top of atmosphere balance)

• P_net = [], req. for

[LenkaNovak]

The complete list is in this issue which will implement compatibility tests in dependent component models. Standalone benchmarks are implemented in #355