Articles | Volume 16, issue 9
https://doi.org/10.5194/essd-16-4119-2024
https://doi.org/10.5194/essd-16-4119-2024
Data description paper
 | 
13 Sep 2024
Data description paper |  | 13 Sep 2024

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

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Cited articles

Andersen, O. B. and Knudsen, P.: Global marine gravity field from the ERS-1 and Geosat geodetic mission altimetry, J. Geophys. Res., 103, 8129–8137, https://doi.org/10.1029/97JC02198, 1998. 
Andersen, O. B. and Knudsen, P.: The DTU17 global marine gravity field: first validation results, in: Fiducial Reference Measurements for Altimetry, edited by: Mertikas, S. and Pail, R., Int. Assoc. Geod. Symp. 150, Springer, Cham, https://doi.org/10.1007/1345_2019_65, pp 83–87, 2019. 
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. 
Andersen, O. B., Zhang, S., Sandwell, D. T., Dibarboure, G., Smith, W. H. F., and Abulaitijiang, A.: The unique role of the Jason geodetic missions for high-resolution gravity field and mean sea surface modelling, Remote Sens.-Basel, 13, 646, https://doi.org/10.3390/rs13040646, 2021. 
Annan, R. F. and Wan, X.: Recovering marine gravity over the Gulf of Guinea from multi-satellite sea surface heights, Front. Earth Sci., 9, 700873, https://doi.org/10.3389/feart.2021.700873, 2021. 
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Short summary
A new global marine gravity model, SDUST2022GRA, is recovered from radar and laser altimeter data. The accuracy of SDUST2022GRA is 4.43 mGal on a global scale, which is at least 0.22 mGal better than that of other models. The spatial resolution of SDUST2022GRA is approximately 20 km in a certain region, slightly superior to other models. These assessments suggest that SDUST2022GRA is a reliable global marine gravity anomaly model.
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