A2 – Commission A2 Rotation of the Earth
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:
- 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).
- 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).
- Develop methods for improving the accuracy and understanding of Earth orientation variations and related reference systems/frames.
- Ensure agreement and continuity of the reference frames used for studying Earth orientation variations with other astronomical reference frames and their densification.
- 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.
Division A Fundamental Astronomy
Commission Working Groups
Commission A2 WG Theory of Earth Rotation and Validation (IAU / IAG Joint WG)
Jet Propulsion Laboratory
Geodynamics and Space Geodesy Group
Mail Stop 238-600
4800 Oak Grove Drive
Pasadena, CA 91109
Phone: +1 818 354 4010
Fax: +1 818 393 4965
Organization website: http://www.jpl.nasa.gov/index.cfm
November 28, 2016
Technische Universität München
Deutsches Geodätisches Forschungsinstitut (DGFI)
Phone: +49 89 23031 1106
Organization website: http://www.dgfi.tum.de
May 23, 2016
Universidad de Alicante
Matemática Aplicada. EPS
Campus de San Vicente
03690 San Vicente de Raspeig - Alicante
Phone: +34 965909762
Organization website: www.ua.es
May 23, 2016