EGU2020-20851
https://doi.org/10.5194/egusphere-egu2020-20851
EGU General Assembly 2020
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Processing of GRACE-FO satellite-to-satellite tracking data using the GRACE-SIGMA software

Igor Koch, Mathias Duwe, Jakob Flury, and Akbar Shabanloui
Igor Koch et al.
  • Leibniz Universität Hannover, Institut für Erdmessung, Hannover, Germany (koch@ife.uni-hannover.de)

The dual-satellite mission GRACE Follow-On (GRACE-FO) was launched in May 2018 as the successor of the Gravity Recovery And Climate Experiment (GRACE). In May 2019 first level 1 data products were made available to the community and are now published regularly. These products, among others, include orbits, accelerometer measurements, star camera data and micron and sub-micron precise inter-satellite range measurements. The data products are used by different groups to compute estimates of monthly gravity fields of the Earth. The in-house developed GRACE-SIGMA software is used at the Institut of Geodesy/Leibniz University Hannover for the estimation of monthly gravity fields. Several parts of the software’s processing chain, such as background modeling, were updated recently and different parametrization scenarios were tested. First solutions were estimated based on laser ranging interferometer measurements. Moreover, different orbit types, such as reduced-dynamic and kinematic, were tested. In this contribution, we present the influence of these updates and tests on the quality of the gravity fields. The obtained solutions are assessed in terms of error degree standard deviations and post-fit residuals of the inter-satellite measurements.

How to cite: Koch, I., Duwe, M., Flury, J., and Shabanloui, A.: Processing of GRACE-FO satellite-to-satellite tracking data using the GRACE-SIGMA software, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-20851, https://doi.org/10.5194/egusphere-egu2020-20851, 2020.

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