Forecasts of Effective Angular Momentum available operationally
Effective Angular Momentum (EAM) functions of the earth are important quantities that relate the mass exchange in different earth environments (atmosphere, ocean, land, and sea level) to the physical properties of the earth, including earth orientation parameters. Forecasts of EAM functions are therefore important, because they fundamentally help in the prediction of time-dependent physical properties of the earth, like those related to its orientation.
The Space Geodesy group at ETH Zurich aims to provide reliable, real time, and accurate prediction of geodetic parameters via its Geodetic Prediction Center (GPC). Now, forecasts of EAM functions of all four types (atmospheric AAM, oceanic OAM, hydrological HAM, and sea-level SLAM) up to 14 days to the future are provided on a daily basis. Our EAM predictions are based on the application of machine learning on data from GFZ Potsdam. These forecasts can be used, for instance, to compute more accurate predictions of earth orientation parameters. Potential applications also include the study of climate and oceans, benefitting the earth science community. For further information and accessing the data, please visit the dedicated website https://gpc.ethz.ch/EAM/.
