Energy Balance Climate Models
This model, written by Dr. Steve Vavrus, integrates a simple form of
the surface energy equation to generate average monthly latitudinal
temperatures for an assumed hemispherically symmetric Earth. In
words, the governing equation states:
Rate of Surface Temperature Change = 1/(Heat Capacity) x (Incoming
Solar Radiation - Net Outgoing Longwave Radiation + Meridional and Zonal
The user can then change boundary conditions known to be important,
such as carbon dioxide concentration, date
of perihelion, and Earth's eccentricity and tilt to estimate the
sensitivity of the climate to various combinations. In addition, because
land and ocean have very different heat capacities and albedoes, the
surface temperature is strongly affected by the presence and latitudinal
distribution of land and sea.
- EBCM1 allows the user to alter the Earth's
fraction of land and sea; the chosen fraction is assigned to all latitudes.