Reprocessed IWV data from ground-based GNSS network during CADDIWA campaign

Integrated Water Vapour (IWV) data were retrieved from the measurements of permanents GNSS stations in Cape Verde and a special station that was installed at the INMG facility in Sal for the field campaign in September 2021. The measurements were processed offline with Gipsy-Oasis II v6.4 software in Precise Point Positioning (PPP) mode. The ZTD estimates were screened for outliers and converted using ERA5 surface pressure and weighted mean temperature derived from the 1-hourly pressure-level data interpolated to the 5 min temporal resolution of the ZTD data. The final IWV data are provided with a 5 min sampling.