Collection of Fortran subprograms which utilize cyclic reduction to directly solve second- and fourth-order finite difference approximations to separable elliptic PDEs in a variety of forms.

Efficient Fortran 90 subprograms for the solution of separable elliptic partial differential equations.

Spectral dynamical core, written in Fortran 77 and primarily designed to run efficiently on small clusters composed of distributed memory computers using MPI. Can be run in two dynamical core versions: either as a dry, adiabatic primitive equations mo...

Collection of Fortran programs to facilitate computer modeling of geophysical processes. The package contains programs for computing certain common differential operators, including divergence, vorticity, gradients, and the Laplacian of both scalar an...

Fortran 77 code for times series and least-squares regression including nonlinear regression.