The terrestrial gravity information was taken from the DTU10 global gravity field. Shown here are the so-called free air gravity deviations from an ideal ellipsoidal Earth model, in units of milli-gal. Areas colored yellow, orange or red are areas where the actual gravity field is larger than the featureless-Earth model predicts, while the progressively darker shades of blue indicate places where the gravity field is less.
NASA's GRACE-FO team plans to switch to a backup system in the Microwave Instrument on one of the twin spacecraft this month.
The laser ranging interferometer (LRI) instrument has been successfully switched on aboard the recently launched twin U.S./German Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) satellites.
Antarctic ice losses have tripled since 2012, raising global sea levels by 0.12 inch (3 millimeters) in that timeframe alone, finds a new NASA/ESA-funded climate assessment.
GRACE-FO has completed its first mission phase and demonstrated the performance of the precise ranging system that enables its measurements of how mass migrates around Earth.
All flight and ground systems have performed well throughout the Launch and Early Operations Period. The accelerometer and microwave science instruments have been powered on successfully and the two satellites are in relative pointing mode.