Geospatial/Scientific Software

Earth Gravity Models

• NGA EGM2008 (Official) - Current standard Earth Gravitational Model
• Wikipedia - Earth Gravitational Model - Overview of EGM84, EGM96, EGM2008
• GeographicLib Gravity Tools - Command-line tools for gravity computations
• Global Geoid Model GGM2022 (arXiv) - Recent research paper
• Gravimetric Geoid Modeling - Colorado case study combining satellite, terrestrial, airborne data
• Science.gov - Global Geoid Models - Collection of research topics
• Math.gl Geoid Module - JavaScript geoid calculations

GMT (Generic Mapping Tools)

• Official Site - Downloads, documentation, community
• GitHub Repository - Source code, issues, contributions
• Workshops & Tutorials - Official training materials
• EarthScope 2025 GMT Course - Upcoming training for geophysics
• GMT Beginner Tutorial - Topographic maps, earthquake catalogs
• PyGMT + Xarray Tutorial - Python integration with gridded data
• 3D Topography Tutorial - Planetary and Antarctic maps
• Mapping with GMT - Cascadia seismicity example

GDAL (Geospatial Data Abstraction Library)

• Official Site - Documentation and downloads
• Geoid Conversion Tutorial - Converting DEMs between ellipsoidal and orthometric heights
• Gentle Introduction to GDAL Part 3 - Geodesy and local map projections

Snakemake (Scientific Workflow Management)

• Official Site - Overview and features
• Documentation - Full reference
• Basics Tutorial - Getting started guide
• General Tutorial - Comprehensive walkthrough
• GitHub Repository - Source and issues
• PyPI Package - Installation via pip
• USGS Snakemake Training - Government scientific workflows
• Snakemake Tutorial (GitHub) - Short getting-started guide
• Snakemake Paper - Original publication in Bioinformatics

FORTRAN for Scientific Computing

• Fortran Astrodynamics Toolkit - Geopotential and gravity models
• Geopotential Module (Source) - Example gravity model code
• Why Physicists Use Fortran - Modern Fortran in HPC
• Introduction to Modern Fortran for Earth System Sciences - Book/guide
• NASA - Modern Fortran for Spacecraft Trajectory - Application paper
• GitHub Fortran MPI Projects - Parallel computing examples

Digital Terrain Models & Remote Sensing

• ArcticDEM - High-resolution Arctic elevation data
• REMA - Reference Elevation Model of Antarctica
• ETOPO1 - Global relief model