Articles | Volume 19, issue 8
https://doi.org/10.5194/gmd-19-3361-2026
https://doi.org/10.5194/gmd-19-3361-2026
Model experiment description paper
 | 
27 Apr 2026
Model experiment description paper |  | 27 Apr 2026

Refining gravity anomaly data of coastal areas by combining XGM2019e-2159 and SRTM/GEBCO_2024 residual terrain model with forward modeling method

Yixiang Liu, Jinyun Guo, Bin Guan, Shaofeng Bian, Heping Sun, and Xin Liu

Related authors

A data-driven U-Net model with residual structures and attention mechanisms for short-term prediction of Arctic sea ice concentration
Mingtao Liu, Jinyun Guo, Yu Sun, Shaofeng Bian, Yongjun Jia, and Xin Liu
EGUsphere, https://doi.org/10.5194/egusphere-2025-4935,https://doi.org/10.5194/egusphere-2025-4935, 2025
Preprint archived
Short summary
SDUST2023VGGA: a global ocean vertical gradient of gravity anomaly model determined from multidirectional data from mean sea surface
Ruichen Zhou, Jinyun Guo, Shaoshuai Ya, Heping Sun, and Xin Liu
Earth Syst. Sci. Data, 17, 817–836, https://doi.org/10.5194/essd-17-817-2025,https://doi.org/10.5194/essd-17-817-2025, 2025
Short summary
SDUST2024MSS_AO: a MSS model of the Arctic Ocean derived from CryoSat-2 SAR altimeter data
Xin Liu, Yang Yang, Menghao Song, Xiaofeng Dai, Yurong Ding, Gaoying Yin, and Jinyun Guo
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2025-2,https://doi.org/10.5194/essd-2025-2, 2025
Revised manuscript not accepted
Short summary
SDUST2023BCO: a global seafloor model determined from a multi-layer perceptron neural network using multi-source differential marine geodetic data
Shuai Zhou, Jinyun Guo, Huiying Zhang, Yongjun Jia, Heping Sun, Xin Liu, and Dechao An
Earth Syst. Sci. Data, 17, 165–179, https://doi.org/10.5194/essd-17-165-2025,https://doi.org/10.5194/essd-17-165-2025, 2025
Short summary
The SDUST2022GRA global marine gravity anomalies recovered from radar and laser altimeter data: contribution of ICESat-2 laser altimetry
Zhen Li, Jinyun Guo, Chengcheng Zhu, Xin Liu, Cheinway Hwang, Sergey Lebedev, Xiaotao Chang, Anatoly Soloviev, and Heping Sun
Earth Syst. Sci. Data, 16, 4119–4135, https://doi.org/10.5194/essd-16-4119-2024,https://doi.org/10.5194/essd-16-4119-2024, 2024
Short summary

Cited articles

Andersen, O. B., Knudsen, P., and Berry, P. A.: The DNSC08GRA global marine gravity field from double retracked satellite altimetry, J. Geodesy, 84, 191–199, https://doi.org/10.1007/s00190-009-0355-9, 2010. 
Claessens, S. J.: Evaluation of gravity and altimetry data in Australian coastal regions, in: Geodesy for Planet Earth: Proceedings of the 2009 IAG Symposium, Buenos Aires, Argentina, 31 August–4 September 2009, edited by: Kenyon, S., Pacino, M., and Marti, U., Springer, Berlin, 435–442, https://doi.org/10.1007/978-3-642-20338-1_52, 2012. 
Dubey, C. P. and Roy, A.: Joint inversion of gravity and gravity gradient and its application to mineral exploration, J. Ind. Geophys. Union, 27, 1–18, 2023. 
Forsberg, R.: A study of terrain reductions, density anomalies and geophysical inversion methods in gravity field modelling, Report 355, Department of Geodetic Science and Surveying, Ohio State University, Columbus, https://earthsciences.osu.edu/sites/earthsciences.osu.edu/files/report-355.pdf (last access: 21 April 2026)., 1984. 
Forsberg, R. and Tscherning, C. C.: The use of height data in gravity field approximation by collocation, J. Geophys. Res., 86, 7843–7854, https://doi.org/10.1029/JB086iB09p07843, 1981. 
Download
Short summary
This study refines the coastal gravity anomaly model by constructing a residual terrain model using high-resolution topographic and bathymetric data. In the spatial domain, the RTM (residual terrain model) gravity forward modeling method is applied to effectively compensate for the missing high-frequency information in the XGM2019e-2159 gravity anomaly model. As a result, an RTM-corrected XGM2019e-2159 gravity anomaly model for the study area is obtained.
Share