GFZ GNSS-derived tropospheric data products (global)

The GFZ Helmholtz Centre for Geosciences (GFZ) acts as an operational analysis center of the EUMETNET EIG GNSS water vapour programme (E-GVAP, https://egvap.dmi.dk/). GFZ provides all types of tropospheric products in near-real time in three processing lines: ultra-rapid (E-GVAP solution ID is GF1U), rapid (GF1R), and global (GF1G). The global solution series is published hourly with a delay of around 50 minutes after the end of each hour. Operational tropospheric products of GFZ included in this data publication are: (1) Zenith Total Delays (ZTD), Integrated Water Vapor (IWV); (2) Tropospheric gradients in North and East directions; (3) Slant Total Delays (STD)