Past Commission A2 Rotation of the Earth for 2015-2018

Parent Division: A

Earth rotation is an interdisciplinary topic that bridges astronomy and geodesy. Precise knowledge of the Earth's rotation and its variations is needed for positioning and navigating objects on Earth and in space. And the analysis of Earth rotation variations provides important information about interactions between the various components of the Earth system and about global change phenomena.

The objectives of Commission A2 on Rotation of the Earth are to:

  1. Encourage and develop cooperation and collaboration in observation and theoretical studies of Earth orientation variations (the motions of the pole in the terrestrial and celestial reference systems and rotation about the pole).
  2. Serve the astronomical community by linking it to the official organizations that provide the International Terrestrial and Celestial Reference Systems/Frames (ITRS/ITRF and ICRS/ICRF) and Earth orientation parameters (EOP): International Association of Geodesy (IAG), International Earth Rotation and Reference Systems Service (IERS), International VLBI Service for Geodesy and Astrometry (IVS), International GNSS Service (IGS), International Laser Ranging Service (ILRS), International DORIS Service (IDS).
  3. Develop methods for improving the accuracy and understanding of Earth orientation variations and related reference systems/frames.
  4. Ensure agreement and continuity of the reference frames used for studying Earth orientation variations with other astronomical reference frames and their densification.
  5. Provide means of comparing observational and analysis methods and results to ensure accuracy of data and models and encourage the development of new observation techniques.

The Commission meets its objectives by fostering research and discussion on Earth rotation and reference frames, by organizing topical symposia and workshops, and by forming relevant Working Groups.


President

Richard Gross

Vice-President

Florian Seitz

Secretary

Alberto Escapa

back to past Commissions list

Past Trienniums


 

IAU 100 Years: Under One Sky

“IAU 100 
Years: Under One Sky

Subscribe to the e-Newsletter

CAPj

IAU Code of Conduct (PDF)

Code of Conduct

IAU Strategic Plan 2020–2030

Strategic Plan

Membership

How to Become a Member

IAU Office of Astronomy for Development

Office for Astronomy Development

IAU Office for Young Astronomers

Office for Young Astronomers

IAU Office for Astronomy Outreach

Office for Astronomy Outreach

IAU e-Newsletter
Volume 2019 n° 9

Latest e-Newsletter

Symposia and Meetings

Meetings

Astronomy Outreach Newsletters and Events

Outreach Newsletters

International School for Young Astronomers

International School for Young Astronomers

UNESCO-IAU Portal to the Heritage of Astronomy

CAPj

International Year of the Periodic
Table of Chemical Elements

Latest e-Newsletter