Data from NASA's GRACE and GRACE Follow-On satellites show that ocean has been gaining mass since 2002. The GRACE mission concluded science operations in June 2017. GRACE Follow-On began data collection in June 2018, and is now continuing the mass change data record for the global ocean.
This dataset contains the global mean ocean mass time series generated from the GRACE and GRACE Follow-On JPL RL06Mv2 data, which includes the latest data processing improvements. The 1-dimensional time series of globally averaged ocean water mass anomalies from GRACE and GRACE Follow-On is expressed in equivalent water height (mm). Seasonal variations have been removed. The time series starts in April 2002, and is continuously updated as more data is collected, with a lag of up to 2 months.
These data are available in ASCII format (Reference: Watkins et al., 2015, doi: 10.1002/2014JB011547).