GRACE (Gravity Recovery and Climate Experiment) mission is a joint project between the National Aeronautics and Space Administration (NASA) and Deutsches Zentrum für Luft- und Raumfahrt (DLR). The twin satellites were built by Astrium and launched together with a Rockot in 2002, the mission is operated by the German Satellite Operations Centre and after ten years the mission is still producing outstanding results.
The primary science objective of GRACE is to measure the Earth's gravity field and it's time variability with unprecedented accuracy. The secondary science objective is to obtain approximately 150 very precise globally distributed vertical temperature and humidity profiles of the atmosphere per day using the GPS radio occultation technique.
25 February 2014
Following the planned switch-off of the GRACE-A and -B Microwave Assemblies (MWA) for battery load reduction (see related news of 23 January 2014), both MWAs have been switched-on again on the below dates:
The GRACE-A and -B Microwave Assemblies (MWA) have been switched-off on the below dates:
Mission Status and Data
The GRACE Level 1B and Level 2 science data and corresponding documentation is publicly available at the two GRACE archives:
Mission Facts and Figures
Related Data Types
Related (Key) Documentation