Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_GFZ_monthly_2020.asc File contents : Effective angular momentum functions from geodetic excitation File units : dimensionless earth rotation excitation functions Issue date : 2026-10-27 References : Stumpe et al. (2027) Closing Mass-Consistent Earth Angular Momentum Budgets: Impact of Oceanic Excitation Uncertainty Contact : Lone Stumpe (stumpe@gfz.de), Robert Dill (dill@gfz.de) Affiliation : GFZ Helmholtz Centre for Geosciences, Potsdam, Germany, Section 1.3: Earth System Modelling Temporal domain : 15.01.2020, 00:00 UTC until 15.12.2020, 00:00 UTC Temporal resolution : monthly (GravIS epochs; GAM and AAM averaged over each epoch interval) Number of data records : 12 Subtracted mean values : mean of each component over total period of all yearly files Notes : These G-AHS data are constructed based on a set of consistently processed Earth rotation excitation functions and the geodetic angular momentum (GAM) derived from the 20 C04 series from the International Earth Rotation and Reference System Service (IERS) G-AHS = GAM - (AAM + HAM + SLAM). For the underlying excitation functions and the calculation of the GAM, see Stumpe et al. (2027) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- YYYY MM DD HH MJD G-AHS (mass + motion) x-component y-component z-component 2020 01 15 00 58863.000 7.377972174846316e-08 -1.095526888277344e-07 -6.441455886614555e-09 2020 02 15 00 58894.000 3.032896239034661e-09 -1.156949224781987e-07 -6.510533366583827e-09 2020 03 15 00 58923.000 8.785661681598204e-08 -2.055432651057051e-09 -6.868026608932934e-09 2020 04 15 00 58954.000 2.134966295600527e-08 -6.539977250445542e-08 -6.968255476985066e-09 2020 05 15 00 58984.000 -9.045277195831485e-08 -1.748383926086645e-07 -7.011014896013863e-09 2020 06 15 00 59015.000 -2.069542266524291e-08 -6.350198244788326e-08 -7.882122333909369e-09 2020 07 15 00 59045.000 -9.537682122067971e-08 -1.540879773782441e-07 -8.146471407865237e-09 2020 08 15 00 59076.000 3.588452204133500e-08 -1.068079680140830e-07 -8.734376695232816e-09 2020 09 15 00 59107.000 1.302331222831942e-08 -1.873585738112790e-07 -8.735474399422561e-09 2020 10 15 00 59137.000 4.626969834343960e-08 -1.091206392262433e-07 -8.469761616878117e-09 2020 11 15 00 59168.000 5.085663408739799e-08 -7.276632304072713e-08 -8.984542859207086e-09 2020 12 15 00 59198.000 4.807373221781364e-08 -2.524337516091751e-08 -9.380058966468891e-09