Magnetometer data from the GRACE satellite duo

Abstract This paper describes and discusses the preprocessing calibration of magnetic data taken by navigational magnetometers onboard two GRACE satellites, with focus on almost 10 years period from January 2008 to end mission in October 2017 for which 1-Hz are available. A is performed comparing raw magnetometer sensor readings model vector values as provided CHAOS-7 geomagnetic field time position data. The presented approach also accounts disturbances produced satellite’s magnetorquer temperature effects, parametrized Sun incident angle. root-mean-squared error difference between calibrated about nT, makes relevant geophysical investigations.