GPT – Global Pressure and Temperature model
The Global Pressure and Temperature (GPT) model provides standard atmospheric pressure and temperature data at any location and altitude on Earth. Versions include GPT1, GPT2, GPT2w, and GPT3, each improving accuracy for geodetic and meteorological applications, supporting precise GNSS positioning and atmospheric corrections.
- GPT1 – The original model offering global averages for pressure and temperature.
- GPT2 – Improved version with higher spatial resolution and updated climatological data.
- GPT2w – Adds corrections for water vapor, enhancing accuracy for tropospheric delay modeling.
- GPT3 – Latest version with further refined resolution and climatology for the most precise geodetic applications.
