Guillaume Lion
_{Researcher in sustainable development}

Scientific contact at IPGP

• Affiliation: Institut de Physique du Globe de Paris (IPGP)
• Email: Glion@ipgp.fr

Biography: Guillaume Lion is staff researcher in the Geodesy team of the UMR IPGP. He studies the impact of clock measurements in geodesy, particularly regarding the modeling of the gravity field and of the geopotential with a high spatial resolution.

Didier Rouxel
_{Head of the geophysics department}

• Affiliation : Service Hydrographique et Océanographique de la Marine (SHOM)
• Email: didier.rouxel@shom.fr

Biography: Didier Rouxel has been an engineer at the Shom (French Navy Hydrographic and Oceanographic Service) since 2000. He is in charge of the marine geophysics department since 2016. He is specialized in particular on applications related to marine gravimetry (acquisition, processing, modeling).

Olivier Jamet
_{Deputy Head of the Geodesy and Metrology Department}

Scientific contact at IGN

• Affiliation: Institut national de l’information géographique et forestière (IGN)
• Email: jamet@ipgp.fr

Biography:

Deputy Head of the Geodesy and Metrology Department at the French National Institute for Geographic and Forestry Information (IGN), Olivier Jamet is also the head of the department’s product and development team. After having directed the IGN’s geodesy research laboratory until 2018, then continued his research career within the geodesy team of the Institut de Physique du Globe de Paris and provided consulting services in this field to the IGN’s scientific management, he is now in charge of steering the technical evolution of the production and maintenance processes of national geodetic references.