Abstract
Gravity Recovery and Climate Experiment (GRACE) data are a valuable source of information for estimating hydrological mass changes. Several approaches have been conducted to investigate surface density changes from satellite-based observations. The traditional approaches are mainly based on the Stokes coefficients, related to a spherical harmonic representation of the gravitational potential. This study aims to develop an alternative method to estimate the temporal variations in water storage. It is based on a specific type of mascon technique that investigates the possibility of obtaining a solution without Stokes coefficients. The method uses a piecewise constant surface density function to estimate surface density changes based on the GRACE satellite-to-satellite tracking (SST) data. The surface density changes are directly obtained from the variations in positions and velocities of the two GRACE satellites. We therefore avoid the series truncation and aim to improve the leakage problem at the price of higher numerical burden. The proposed method is numerically tested on synthetic data similar to level-1 GRACE data for a period of one month. Two regularization methods, the well-known Tikhonov solution and a method that accounts for the areas of different patches, are employed to obtain a stable solution. The accuracy assessment over the Greenland area indicates that the estimated values are reliable and statistically significant, a further confirmation of the efficacy and stability of the method.
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References
Arendt A A, Luthcke S B, Larsen C F, Abdalati W, Krabill W B and Beedle M J 2008 Validation of high-resolution GRACE mascon estimates of glacier mass changes in the St Elias Mountains; Alaska, USA, using aircraft laser altimetry; J. Glaciol. 54(188) 778–787.
Awange J L, Fleming K M, Kuhn M, Featherstone W E, Heck B and Anjasmara I 2011 On the suitability of the 4 × 4 GRACE mascon solutions for remote sensing Australian hydrology; Remote Sens. Environ. 115(3) 864–875.
Bettadpur S 2007 CSR Level-2 Processing Standards Document for Level-2 Product Release 04; Rev. 3.1, GRACE 327-742 (CSR-GR-03-03), University of Texas, Austin, 17p.
Folland G B 1995 Introduction to Partial Differential Equations; Princeton University Press, Chap. 3.
Gibbs J W 1898 Fourier’s Series; Nature 59(1522) 200.
Gibbs J W 1899 Fourier’s Series; Nature 59(1539) 606.
Hansen P C 2005 Rank-Deficient and Discrete Ill-Posed Problems: Numerical Aspects of Linear Inversion; Vol. 4, SIAM, Philadelphia, PA, 247p, https://doi.org/10.1137/1.9780898719697.
Iran-Pour S 2013 Sampling the Earth’s time-variable gravity field from satellite orbit; PhD Thesis, University of Stuttgart, Stuttgart, 121p, http://doi.org/10.18419/opus-3924.
Ivins E R, Watkins M M, Yuan D N, Dietrich R, Casassa G and Rulke A 2011 On-land ice loss and glacial isostatic adjustment at the Drake Passage, 2003–2009; J. Geophys. Res.-Sol. Ea. 116(B2).
Jacob T, Wahr J, Pfeffer W T and Swenson S 2012 Recent contributions of glaciers and ice caps to sea level rise; Nature 482 514–518.
Krogh P 2011 High resolution time-lapse gravity field from GRACE for hydrological modelling; PhD Thesis, Technical University of Denmark, Denmark, 154p, https://orbit.dtu.dk/files/6431084/Thesis%20Pernille%20Krogh%20280211.pdf.
Loomis B D, Luthcke S B and Sabaka T J 2019 Regularization and error characterization of GRACE mascons; J. Geodesy 93(9) 1381–1398.
Luthcke S B, Zwally H J, Abdalati W, Rowlands D D, Ray R D, Nerem R S, Lemoine F G, McCarthy J J and Chinn D S 2006 Recent Greenland ice mass loss by drainage system from satellite gravity observations; Science 314(5803) 1286–1289.
Luthcke S B, Sabaka T J, Loomis B D, Arendt A A, McCarthy J J and Camp J 2013 Antarctica, Greenland and Gulf of Alaska land-ice evolution from an iterated GRACE global mascon solution; J. Glaciol. 59(216) 613–631.
Ramillien G, Seoane L, Frappart F, Biancale R, Gratton S, Vasseur X and Bourgogne S 2012 Constrained regional recovery of continental water mass time‐variations from GRACE‐based geopotential anomalies over South America; Surv. Geophys. 33(5) 887–905.
Rowlands D D, Luthcke S B, Klosko S M, Lemoine F G, Chinn D S, McCarthy J J, Cox C M and Anderson O B 2005 Resolving mass flux at high spatial and temporal resolution using GRACE intersatellite measurements; Geophys. Res. Lett. 32(4), https://doi.org/10.1029/2004GL021908.
Rowlands D D, Luthcke S B, McCarthy J J, Klosko S M, Chinn D S, Lemoine F G, Boy J P and Sabaka T B 2010 Global mass flux solutions from GRACE: A comparison of parameter estimation strategies – Mass concentrations versus Stokes coefficients; J. Geophys. Res.-Sol. Ea. 115(B1), https://doi.org/10.1029/2009JB006546.
Sabaka T J, Rowlands D D, Luthcke S B and Boy J P 2010 Improving global mass flux solutions from gravity recovery and climate experiment (GRACE) through forward modeling and continuous time correlation; J. Geophys. Res.-Sol. Ea. 115(B11), https://doi.org/10.1029/2010JB007533.
Save H V 2009 Using regularization for error reduction in GRACE gravity estimation; PhD Thesis, University of Texas at Austin, 174p, https://repositories.lib.utexas.edu/handle/2152/7665.
Save H, Bettadpur S and Tapley B D 2016 High‐resolution CSR GRACE RL05 mascons; J. Geophys. Res.-Sol. Ea. 121(10) 7547–7569, https://doi.org/10.1002/2016JB013007.
Scanlon B R, Zhang Z, Save H, Wiese D N, Landerer F W, Long D, Longuevergne L and Chen J 2017 Global evaluation of new GRACE mascon products for hydrologic applications; Water Resour. Res. 52(12) 9412–9429, https://doi.org/10.1002/2016WR019494.
Schrama E J O, Wouters B and Rietbroek R 2014 A mascon approach to assess ice sheet and glacier mass balances and their uncertainties from GRACE data; J. Geophys. Res.-Sol. Ea. 119(7) 6048–6066, https://doi.org/10.1002/2013JB010923.
Swenson S and Wahr J 2006 Post‐processing removal of correlated errors in GRACE data; Geophys. Res. Lett. 33(8), https://doi.org/10.1029/2005GL025285.
Tapley B D, Bettadpur S, Ries J C, Thompson P F and Watkins M M 2004 GRACE measurements of mass variability in the Earth system; Science 305(5683) 503–505.
Tikhonov A N 1963 Solution of incorrectly formulated problems and the regularization method; Sov. Math. Dokl. 4 1035–1038.
Velicogna I, Sutterley T C and Van Den Broeke M R 2014 Regional acceleration in ice mass loss from Greenland and Antarctica using GRACE time‐variable gravity data; Geophys. Res. Lett. 36(18) 8130–8137, https://doi.org/10.1029/98JB02844.
Wahr J, Molenaar M and Bryan F 1998 Time variability of the Earth’s gravity field: Hydrological and oceanic effects and their possible detection using GRACE; J. Geophys. Res.-Sol. Ea. 103(B12) 30,205–30,229.
Watkins M M, Wiese D N, Yuan D N, Boening C and Landerer F W 2015 Improved methods for observing Earth’s time variable mass distribution with GRACE using spherical cap mascons; J. Geophys. Res.-Sol. Ea. 120(4) 2648–2671, https://doi.org/10.1002/2014JB011547.
Wiese D N, Landerer F W and Watkins M M 2016 Quantifying and reducing leakage errors in the JPL RL05M GRACE mascon solution; Water Resour. Res. 52(9) 7490–7502.
Acknowledgements
The first author would like to thank Prof Dr.-Ing. Nico Sneeuw at Institute of Geodesy, University of Stuttgart, for providing him with the computer lab for parts of the data processing used in this paper.
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AA performed the simulation, formal data analysis and writing the draft paper. AA-S and WK, as supervisors, contributed to the discussion, interpretation of the results and editing the paper. WK proposed the methodology.
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Communicated by Abhijit Mukherjee
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Abedini, A., Keller, W. & Amiri-Simkooei, A. Estimation of surface density changes using a mascon method in GRACE-like missions. J Earth Syst Sci 130, 26 (2021). https://doi.org/10.1007/s12040-020-01535-5
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DOI: https://doi.org/10.1007/s12040-020-01535-5