Working Groups

SC1.3a-WG1: European Unified Height Reference
Chair: Joachim Schwabe (Germany)

SC1.3a-WG2: EPN Densification (EPN-D)
Chair: Ambrus Kenyeres (Hungary)

SC1.3a-WG3: Deformation models
Chair: Martin Lidberg (Sweden)

SC1.3a-WG4: EPN Reprocessing
Chair: Christof Völksen (Germany)

SC1.3b-WG1: Establishment and maintenance of the Geocentric Reference Frame for the Americas and the Caribbean
Chair: José Antonio Tarrío (Chile)

SC1.3b-WG2: National Integration to the SIRGAS Reference Frame
Chair: Demián Gómez (USA)

SC1.3b-WG3: Definition, establishment and maintenance of the Vertical Datum for the Americas and the Caribbean
Chair: Gabriel do Nascimento Guimarães (Brazil)

SC1.3c-WG1: North American Reference Frame Densification (NAREF)
Chair: Jason Bond (Canada)

SC1.3c-WG2: North American Terrestrial Reference Frame of 2022 (NATRF2022)
Chair: Rick Bennett (USA)

SC1.3c-WG3: Reference Frame Transformations in North America
Chair: Michael Dennis (USA)

WG 1.4.1 Improving and homogenisation of geophysical modeling for a better consistency of the reference frames
Chair: Tobias Nilsson (Sweden)

WG 1.4.2 Studying and modeling the structure of the AGNs and its evolution over time and frequency for the future CRFs
Chair: Minghui Xu (Germany)

Joint Working Groups

JWG 1.1.1 Genesis (joint with IERS and GGOS)
Chair: Johannes Böhm

JWG 1.1.2 Atmospheric ties (joint with GGOS)
Chair: Jungang Wang (Germany)

JWG 1.1.3 Lunar reference frames (joint with IAU)
Chair: Agnès Fienga (France)

JWG 1.2.1 GNSS scale information for global reference frames (joint with IGS)
Chair: Paul Rebishung (France)

JWG 1.2.4 Evaluation of the terrestrial reference frames (joint with IERS)
Chair: Guilhem Moreaux (France)

JWG 1.4.3 Consistent realization of TRF, CRF and EOP (joint with IAU Commission A2 and IERS)
Chair: Robert Heinkelmann (Germany)