Mars Atmosphere-Ice Coupler MAIC-2

The Mars Atmosphere-Ice Coupler MAIC-2 is a simple, latitudinal model, which consists of a set of parameterisations for the surface temperature, the atmospheric water transport and the surface mass balance (condensation minus evaporation) of water ice. It is driven directly by orbital parameters. A detailed description of the model is given in the publication by Greve et al. (2010).

The model equations of MAIC-2 are discretised by a finite-difference/finite-volume scheme. Coding is done in the programming language Fortran 90.

Required model forcing
(as functions of time):

  • Obliquity (axial tilt).
  • Orbital eccentricity.
  • Solar longitude (Ls)
    of perihelion.

Output (as functions of latitude and time):

  • Surface temperature.
  • Evaporation rate of water ice.
  • Condensation rate of water ice.
  • Atmospheric water content.
  • Surface mass balance of water ice.
  • Ice thickness.

How to get MAIC-2

Subversion repository:

  • Checkout of the latest revision:
          svn checkout svn:// maic2
  • Checkout of release 3:
          svn checkout svn:// maic2
Tarball (gzipped tar archive):
  • Download of release 3 as a tarball (gzipped tar archive, 1.1 MB).

Legal notes

MAIC-2 is free software. It can be redistributed and/or modified under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at the user's option) any later version. Referencing the publication by Greve et al. (2010) is appreciated.

MAIC-2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.



  • Please contact  maic2help <at-nospam>


Greve, R., B. Grieger and O. J. Stenzel. 2010.
MAIC-2, a latitudinal model for the Martian surface temperature, atmospheric water transport and surface glaciation.
Planetary and Space Science 58 (6), 931-940. doi: 10.1016/j.pss.2010.03.002.
Authors' version @ arXiv:0903.2688 [physics.geo-ph].

Page maintained by Ralf Greve
Last modified: 2014-06-09