Research News｜International Collaboration Team on "Time-Varying Gravity Field Inversion and Next-Generation Gravity Satellite Simulation" Holds First Meeting in Switzerland

      On June 26-29, 2023, the international team of Time-Variable Gravity Field Modeling and Simulation from Present and Future Gravity Satellite Missions successfully held its first meeting. The international team of Gravity Satellite Missions (GSM) successfully organized its first meeting in Bern, Switzerland. More than 20 team members from the University of Bern, the German Geosciences Center (DLR), the University of Hannover, the French Space Agency (AFSSA), the Graz University of Technology (Austria), Tongji University, Huazhong University of Science and Technology (HUST), the Southern University of Science and Technology (SUST), the Institute of Precision Measurement and Technological Innovation (IPMIT) of the Chinese Academy of Sciences (CAS), and Sun Yat-Sen University (SUNY), participated in the meeting. Prof. Feng Wei, the team leader and the Geodesy and Navigation Team of the School of Surveying and Mapping Science and Technology of Sun Yat-sen University, presided over the meeting, and Prof. Zhong Min of the School attended the meeting.

ISSI International Team Group Photo

       Dr. Mark Sargent, head of the International Space Science Institute (ISSI), delivered a speech and introduced in detail the institutional composition and academic exchange activities of ISSI. On behalf of the international team, Prof. Feng Wei introduced the previous cooperation and exchanges among the team members and presented souvenirs of Sun Yat-Sen University to Dr. Sargent and Prof. Adrain Jäggi, Chairman of the Gravity Committee of the International Association of Geodesy (IAG), and Professor of the University of Bern.

Presentation of ISSI by Dr. Mark Sargent

Prof. Wei Feng presented a souvenir of Sun Yat-Sen University to Prof. Adrain Jäggi of the University of Bern.

       The conference centered on the topics of "GRACE/GRACE-FO high-precision gravity field inversion", "COST-G fusion gravity field product development progress and scientific application" and "Future gravity satellite program"."The conference was held for four days for in-depth exchanges and discussions. The conference fully demonstrated the latest products and progress in the field of time-varying gravity field inversion at home and abroad, discussed in depth the development plan of new COST-G products integrating the gravity field products of satellites of several teams in China, and exchanged views on the future plans of the next-generation gravity satellites based on multiple constellations and the satellites based on quantum technology. This meeting laid the foundation for the integration of Chinese gravity satellite products into international joint gravity field products.

Presentation by Dr. Christoph Dahle, German Centre for Geosciences (GCG) 

       The International Space Science Institute (ISSI) is an international research institute specializing in space science, founded in 1995 and headquartered in Bern, Switzerland. Funded by the European Space Agency, the Swiss Federal Government and the Russian Academy of Sciences, ISSI carries out research in the areas of solar and space physics, planetary science, astrophysics and cosmology, space geoscience and space biology, and its series of research results have a high impact in the field of international space science.
      The international team "Time-varying Gravity Field Inversion and Next Generation Gravity Satellite Simulation" is the first international team project funded by ISSI in the field of satellite gravity. The project will carry out high-precision time-varying gravity field inversion and fusion based on the GRACE/GRACE-FO gravity satellites, and promote the simulation and scientific application of the next-generation gravity satellites planned by China and Europe. The core members of the team mainly include Prof. Zhong Min and Prof. Feng Wei from Sun Yat-Sen University, Prof. Shen Yunzhong and Prof. Chen Qiujie from Tongji University, Prof. Luo Zhicai, Associate Researcher Zhou Hao and Associate Researcher Guo Xiang from Huazhong University of Science and Technology (HUST), Prof. Zhao Qile from Wuhan University, Assistant Prof. General Ran from the Southern University of Science and Technology (SUST), Associate Researcher Wang Changqing from the Institute of Precision Measurement (IPM) of the Chinese Academy of Sciences (CAS), Prof. Adrian Jäggi from the University of Bern (UN), Switzerland, Prof. Frank Flechtner (Chief Scientist of GRACE/GRACE-FO) from German Geosciences Center (DLR), Prof. Jean-Michel Lemoine from French Space Agency (AFSPA), Prof. Torsten Mayer-Gürr from Graz University of Technology (TUG) and Dr. Stéphane Bourgogne, CEO of Stellar Space Europe. Dr. Bourgogne and more than a dozen other experts. International team website: https://www.issibern.ch/teams/timevargravfield/