Publications related to the GRACE Missions (no abstracts)

• Sorted by Date • Sorted by Last Name of First Author •

Mass change from GRACE: a simulated comparison of Level-1B analysis techniques

Andrews, Stuart B., Moore, Philip, and King, Matt. A., 2015. Mass change from GRACE: a simulated comparison of Level-1B analysis techniques. Geophysical Journal International, 200(1):503–518, doi:10.1093/gji/ggu402.

Downloads

• from the NASA Astrophysics Data System  • by the DOI System  •

@ARTICLE{2015GeoJI.200..503A,
       author = {{Andrews}, Stuart B. and {Moore}, Philip and {King}, Matt. A.},
        title = "{Mass change from GRACE: a simulated comparison of Level-1B analysis techniques}",
      journal = {Geophysical Journal International},
     keywords = {Inverse theory, Satellite geodesy, Gravity anomalies and Earth structure, Time variable gravity, Global change from geodesy, Antarctica},
         year = 2015,
        month = jan,
       volume = {200},
       number = {1},
        pages = {503-518},
     abstract = "{Spherical harmonic and mascon parameters have both been successfully
        applied in the recovery of time-varying gravity fields from
        Gravity Recovery and Climate Experiment (GRACE). However, direct
        comparison of any mass flux is difficult with solutions
        generated by different groups using different codes and
        algorithms. It is therefore opportune to compare these
        methodologies, within a common software base, to understand
        potential limitations associated with each technique. Here we
        use simulations to recover a known monthly surface mass
        distribution from GRACE KBRR data. The ability of spherical
        harmonic and mascon parameters to resolve basin-level mass
        change is quantified with an assessment of how the noise and
        errors, inherent in GRACE solutions, are handled. Recovery of a
        noise and error free GLDAS anomaly revealed no quantifiable
        difference between spherical harmonic and mascon parameters.
        Expansion of the GLDAS anomaly to degree and order 120 shows
        that both spherical harmonic and mascon parameters are affected
        by comparable omission errors. However, the inclusion of
        realistic KBRR noise and errors in the simulations reveals the
        advantage of the mascon parameters over spherical harmonics at
        reducing noise and errors in the higher degree and order
        harmonics with an rms (cm of EWH) to the GLDAS anomaly of 10.0
        for the spherical harmonic solution and 8.8 (8.6) for the
        4{\textdegree}(2{\textdegree}) mascon solutions. The
        introduction of a constraint matrix in the mascon solution based
        on parameters that share geophysical similarities is shown to
        further reduce the signal lost at all degrees. The recovery of a
        simulated Antarctic mass loss signal shows that the mascon
        methodology is superior to spherical harmonics for this region
        with an rms (cm of EWH) of 8.7 for the 2{\textdegree} mascon
        solution compared to 10.0 for the spherical harmonic solution.
        Investigating the noise and errors for a month when the
        satellites were in resonance revealed both the spherical
        harmonic and mascon methodologies are able to recover the GLDAS
        and Antarctic mass loss signal with either a comparable
        (spherical harmonic) or improved (mascon) rms compared to non-
        resonance periods.}",
          doi = {10.1093/gji/ggu402},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2015GeoJI.200..503A},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

Generated by bib2html_grace.pl (written by Patrick Riley modified for this page by Volker Klemann) on Thu Aug 14, 2025 17:55:10

---

Thu Aug 14, F. Flechtner