A N-dimensional Fortran Interpolation Program (NterGeo) for Geophysics Sciences

An interpolation program coded in Fortran for irregular N-dimensional cases is provided and freely available. Needs of interpolation procedure over irregular meshes or matrixes with interdependent input data dimensions is frequent in geophysical models. Also, these models often embed look-up tables of physics/chemistry modules. Fortran is a powerful and fast language, highly portable and easy to interface with other existing Fortran models. Our program does not need any libraries and can be compiled with any fortran compiler. The program is fast and competitive compared to current Python libraries. A novel optional parameter (normalization option) is provided when considering different types of units on each dimension. For the general program, the inverse distance is used for the weight calculation with a distance defined as a p-distance.