3721 20190114124730.0 DATASET-2019-0012 Pottiaux, Eric Synthetic datasets of Integrated Water Vapour (IWV) difference time series (25-year long). 2017 Three synthetic datasets of various complexity of IWV difference time series created based on the characterisation of the reference IGS repro 1 – ERA-Interim IWV differ-ences, at 120 IGS station locations and over a 25-year period. These datasets are used for the development and the assessment of the different homogenisation tools available in the sub-working group ‘data homogenisation’ of the COST Action ES1206 (GNSS4SWEC) STCE GNSS Water vapour Synthetic Benchmark Klos, Anna Van Malderen, Roeland eric.pottiaux@observatoire.be DATASET