[1] Seasonal variability in ocean bottom pressure pb is analyzed using GRACE (Gravity Recovery and Climate Experiment) data products and an optimized model solution obtained by fitting most available ocean data in a leastsquares sense. The annual cycle in the spatial mean is a substantial part of the observed seasonal pb variability; net freshwater input and atmospheric pressure effects are bot...

Throughout the past decade, the Gravity Recovery and Climate Experiment (GRACE) has given an unprecedented view on global variations in terrestrial water storage. While an increasing number of case studies have provided a rich overview on regional analyses, a global assessment on the dominant features of GRACE variability is still lacking. To address this, we survey key features of temporal var...

Terrestrial water storage (TWS) anomalies derived from the Gravity Recovery and Climate Experiment (GRACE) mission have been useful for several earth science applications, ranging global system studies to regional management. However, relatively short record of GRACE has limited its use in understanding climate-driven interannual-to-decadal variability TWS. Targeting these timescales, we used n...

In early 2010, JHU/APL delivered four ultra-stable oscillators (USOs) to the Jet Propulsion Laboratory (JPL) for the Gravity Recovery and Interior Laboratory (GRAIL) mission. GRAIL is a NASA Discovery lunar mission with the goals of mapping the entire lunar gravity field and, through the geodesy determined from this result, attempt to define the most likely model for the moon’s deep interior. S...

Introduction NASA’s Gravity Recovery and Climate Experiment (GRACE), which is a joint mission of the United States and Germany, uses a pair of coupled satellites to measure spatial and temporal changes in the Earth’s gravity field. From these data, estimates of changes (time-variable anomalies) in mass are derived. In turn, the mass changes are attributed primarily to changes in water content (...

The global water cycle is generally viewed as the cycling of masses among land, ocean, and atmosphere. This predominantly occurs at annual time scale between land constituting seasonal cycle. NASA’s Gravity Recovery Climate Experiment (GRACE) GRACE-Follow On missions can directly observe describe changes in its intensity. We present amplitudes ocean mass anomalies 04/2002 11/2020. find that ave...

[1] A long-standing challenge for hydrologists has been a lack of observational data on global-scale basin hydrological behavior. With observations from NASA's Gravity Recovery and Climate Experiment (GRACE) mission, hydrologists are now able to study terrestrial water storage for large river basins (>200,000 km2), with monthly time resolution. Here we provide results of a time series model of ...