globegen is an unstructured prismatic grid-generator for creating meshes for the entire globe. It can be used for making simulations of global circulations or to study the Earth's climate. Grids can also be generated for studying the atmophere of other planets, such as, Mars.

The use of triangular elements has adavantages over rectangular elements. The shoreline is resolved in a better manner and the problem of polar singularity is eliminated. Since the mesh is unstructured, another added advantage is the efficient use of computing resources. High resolution can be provided only where its needed and the implementation of solution adaptive methods is easier.

running globegen
Two input files are required by the program: grid.inp & grid.pth. These files are generally created by XOMEGA (Graphical User Interface for OMEGA). Sample input files are provided with the distribution and a description is given here. You can always edit these files with an editor.

globegen is still under development and therefore might have unknown bugs. If you run across a bug please notify the OMEGA Development Team. The main hurdle in improved performance is in I/O required for terrain and shoreline datafiles. FORTRAN reads are sequential and take a relatively longer time. Soon I/O will be implemented in C to increase grid-generation speed. MPI is another option under consideration.