GRACE and GRACE-FO Level 2 RL07 data processing at JPL
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States of America (matthias.ellmer@jpl.nasa.gov)
The RL07 series of GRACE gravity field products generated at JPL is a reprocessing of updated Level 1 data for the entire mission duration. Some aspects of the Level 2 processing have been updated from the RL06 series, in an effort to improve solution quality and uncertainty quantification.
Level 2 processing improvements include the co-estimation and use of full observation covariance matrices for both GPS and inter-satellite ranging KBR observations, and the use of an updated background field (GOCO06s) and other models. The updates ensure consistency and continuity with the GRACE-FO data record, which is processed using the same standards.
We present time series and analysis of these new fields, and compare them to the previously released JPL RL06 series of gravity field solutions, showing higher fidelity in formal errors, and improvements in solution noise levels. For the GRACE-FO time period, we compare KBR solutions with LRI fields processed using this new set of standards.
How to cite: Ellmer, M., Wiese, D., Kuang, D., Landerer, F., Blackwood, C., McCullough, C., Yuan, D.-N., Fahnestock, E., and Peidou, A.: GRACE and GRACE-FO Level 2 RL07 data processing at JPL, GRACE/GRACE-FO Science Team Meeting 2022, Potsdam, Germany, 18–20 Oct 2022, GSTM2022-30, https://doi.org/10.5194/gstm2022-30, 2022.
