GGOS Committees and GGOS Working Groups address overarching issues common to several or all IAG components, and are a mechanism to bring the various activities of the Services, Commissions and Inter-Commission Committees together, or to link GGOS to external organizations. GGOS Committees and Working Groups are associated to the GGOS components BPS, BNO or CO.

GGOS Committees

Committees are established for a long periode. GGOS Committees:

• Committee on “Performance Simulations and Architectural Trade-Offs (PLATO)” (associated to BNO)
• Committee on “Data and Information Systems” (associated to BNO)
• Committee on “Satellite and Space Missions” (associated to BNO)
• Committee on “Contribution to Earth System Modelling” (associated to BPS)
• Committee on “Essential Geodetic Variables (EGV)” (associated to BPS)
• Committee on “DOIs for Geodetic Data Sets” (associated to CO)

GGOS Working Groups (WG), Joint Working Groups (JWG) and Joint Study Groups (JSG)

Working Groups are established for a short periode (4 years). GGOS Working Groups:

• JWG on “Towards a consistent set of parameters for the definition of a new GRS” (associated to BPS)
• JWG on “Ground Survey and Co-location” (associated to BNO)

associated to Focus Area – Unified Height System (UHS):

• JWG on “Vertical Datum Standardization”
  
• JWG on “Strategy for the Realization of the International Height Reference System (IHRS)”
  
• JWG on “Implementation of the International Height Reference Frame (IHRF)”

associated to Focus Area – Geodetic Space Weather Research (GSWR):

• JSG on “Coupling processes between magnetosphere, thermosphere and ionosphere”
• JWG on “Electron density modelling”
• JWG on “Improvement of thermosphere models”
• JWG on “Improved understanding of space weather events and their monitoring by satellite missions”