Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8132243 | Advances in Space Research | 2018 | 8 Pages |
Abstract
Effective Angular Momentum (EAM) functions obtained from global numerical simulations of atmosphere, ocean, and land surface dynamics are routinely processed by the Earth System Modelling group at Deutsches GeoForschungsZentrum. EAM functions are available since January 1976 with up to 3â¯h temporal resolution. Additionally, 6â¯days-long EAM forecasts are routinely published every day. Based on hindcast experiments with 305 individual predictions distributed over 15â¯months, we demonstrate that EAM forecasts improve the prediction accuracy of the Earth Orientation Parameters at all forecast horizons between 1 and 6â¯days. At day 6, prediction accuracy improves down to 1.76 mas for the terrestrial pole offset, and 2.6 mas for ÎUT1, which correspond to an accuracy increase of about 41% over predictions published in Bulletin A by the International Earth Rotation and Reference System Service.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Space and Planetary Science
Authors
Henryk Dobslaw, Robert Dill,