This dataset contains the Global Mean Ocean Mass time series generated from the GRACE JPL RL05M data ( ftp://podaac.jpl.nasa.gov/allData/tellus/L3/mascon/RL05/JPL/CRI/ ). The time series is a 1-dimensional time series of globally averaged ocean water mass anomalies from GRACE expressed in equivalent water height (mm). Seasonal variations have been removed. It starts in May 2002 to present, with a lag of up to 4 months. These data are available in ASCII format (Reference: Watkins et al., 2015, doi: 10.1002/2014JB011547).