IGiK–TVGMF: A MATLAB package for computing and analysing temporal variations of gravity/mass functionals from GRACE satellite based global geopotential models

Abstract

The determination and the analysis of temporal variations of gravity/mass functionals (TVGMFs) are one of the most important tasks within the Earth-science disciplines. This paper describes a MATLAB package, named IGiK–TVGMF (Instytut Geodezji i Kartografii–TVGMF). This MATLAB package allows computing and analysing TVGMF from Global Geopotential Models (GGMs) that developed on the basis of a monthly interval GRACE (Gravity Recovery And Climate Experiment) satellite gravimetry mission data.The IGiK–TVGMF package is developed using the MATLAB App Designer. Thirteen TVGMFs from seven GRACE computation centres can be determined at a single point or a grid of points, using the IGiK–TVGMF. The seasonal adjustment and the Principal Component Analysis/Empirical Orthogonal Function (PCA/EOF) methods were utilized to analyse and model TVGMFs.The IGiK–TVGMF is freely available for non-commercial, scientific research and academic purposes via https://github.com/Walyeldeen/Walyeldeen-Godah.