The Model Parameters

Main output

  • Mean Temperature is the mean temperature of the surface calculated with regard for relative land areas.
  • Mean Albedo is the mean albedo of the surface calculated with regard for relative land areas.

The parameters used in the model are :

  • Solar Fraction is a number between 0 and 1 which represents the proportion of the incoming energy which reaches the surface.
  • Radiation Constant [A] is one of the long wave radiation constants determining the terrestrial energy radiated outward from the Earth.
  • Radiation Constant [B] is the other of the long wave radiation constants determining the terrestrial energy radiated outward from the Earth.
  • Transport Coefficient [C] is a number which measures the degree to which latitudinal zones are in contact with one another allowing transport of energy between them.
  • Critical Temperature [Tc] is a temperature, in oC, below which the surface is completely ice covered.
  • Ice Albedo [Aice] is a number between 0 and 1 which represents the proportion of the radiation incident on a surface of ice or snow which is reflected back. Ice normally has an albedo of about 0.62.
  • Surface Albedo are values for the non ice covered surface albedoes which may be set by the user if non standard i.e. reference albedoes are not required.

Control Input

  • Loops The number of loops the model is allowed to make before it stops.
  • Accuracy The difference between successive temperature calculations which must be reached before the models stops.

Control Readout

  • Loop The number of loops the model is actually makes before it stops.
  • Accuracy The difference between successive temperature calculations which the model actually reaches before it stops.
  • Converge Will be set to yes if the model reaches the accuracy set.
  • Status Gives you the condition the model is in i.e.reset or finished.

Reference Values

  • Albedo The surface albedoes which are built into the model these are the average albedoes of the zones without ice cover.
  • Temp These are the zonal temperatures for the model starting situation.

Calculated Values

  • Albedo The surface albedoes which calculated by the model.
  • Temp The surface temperatures which calculated by the model.