Our team synthesized the Level 1b gravity gradient data and corresponding orbital products of the GOCE satellite throughout the entire mission cycle, as well as the GRACE satellite gravity observation data from January 2003 to July 2016. The low-frequency errors of the gravity gradient data are filtered using an IIR filter, and a 300 degree and order static gravity field model Tongji-GMMG2021S was obtained by direct method with the GRACE satellite data. After external data verification, the accuracy of the Tongji GMMG2021S model is comparable to that of the international 6th generation GOCE model.

Corresponing author：Professor Qiujie Chen (qiujiechen@tongji.edu.cn)

The Tongji-Grace01 solutions can be directly downloaded from the website of

https://workdrive.zohopublic.com.cn/external/ea6bc05d7362a76cb5401e6620 29953ed574cb5c654e90a3934ca99bcf2de669.

When using this data, please cite the following publications which provide details about the approach and the models used.

Chen J, Zhang X, Chen Q, Shen Y, Nie Y. (2022). Static Gravity Field Recovery and Accuracy Analysis Based on Reprocessed GOCE Level 1b Gravity Gradient Observations, EGU General Assembly 2022, Vienna, Austria, 23-27 May 2022.

Chen Q, Shen Y, Francis O, Chen W, Zhang X, Hsu H. (2018). Tongji-grace02s and Tongji-grace02k: High-Precision Static GRACE-only Global Earth's Gravity Field Models Derived by Refined Data Processing Strategies. Journal of Geophysical Research: Solid Earth, 123(7), 6111-6137.