Universal Time Prediction using Both Geodetic and Atmospheric Angular Momentum Data

  • D. Gambis
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 105)


In the present paper, we have investigated the possibility of using both geodetic Universal Time solution and short-term variations of Atmospheric Angular Momentum (AAM) estimates, including forecasts, now available on a real-time basis from various meteorological centers to derive routinely a Universal Time prediction. A series of simulation has been performed; results show that there is a significant improvement for short-term predictions (i.e. 5 or 10 days in advance) when compared to the prediction solely based on geodetic data. For longer-term prediction similar precisions are obtained.


Earth Rotation Universal Time Geodetic Data Atmospheric Angular Momentum International Earth Rotation 
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Copyright information

© Springer-Verlag New York Inc. 1990

Authors and Affiliations

  • D. Gambis
    • 1
  1. 1.Observatoire de ParisCentral Bureau of International Earth Rotation ServiceParisFrance

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