earth-EBMs

A hierarchial set of energy balance models parameterized for the Earth system using the Rapid Radiative Transfer Model for GCMs (RRTM-G) as implemented in climt using Python. Convection is modeled in the RCE setup as a secondary adjustive mechanism that is activated in regions of radiative instability.

Models:

1. 0D Radiative Equilibrium
2. 1D Radiative Equilibrium (RE)
3. 1D Radiative-Convective Equilibrium (RCE)

0-D Model Initial Conditions:

• Planetary Albedo: 0.29
• Emissivity Coefficient: 0.619 +/- 0.000425

1-D Model Initial Conditions:

• Surface Type: Aquaplanet
• Zenith angle: 75 deg.
• Surface Direct SW Albedo: 0.3
• Surface Diffuse SW Albedo: 0.259 (0.3 sin(60))
• Surface Direct Near-Infrared Albedo: 0.45
• Ocean Mixed Layer Depth: 40 m
• Solar variation: None; Uniform flux of 1367.6
• Error margin in energy budget: 5 W/m^2.
• RE Energetics
  • Surface temperature: 250 K
  • Air Temperature: Isothermal; 230 K.
• RCE Energetics
  • Surface Temperature: 275 K
  • Air Temperature: Isothermal; 250 K