Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_GFZ_monthly_2012.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 : 15.01.2012, 00:00 UTC until 15.12.2012, 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 2012 01 15 00 55941.000 -1.016376565625741e-07 -2.157091385115584e-09 3.359466824586821e-09 2012 02 15 00 55972.000 -3.674412713725339e-08 9.137714600405379e-08 2.830116820383229e-09 2012 03 15 00 56001.000 3.282706435803249e-09 -3.445490638173442e-09 3.841056861758173e-09 2012 04 15 00 56032.000 6.386018234359660e-08 5.277256571732439e-08 3.864643318217069e-09 2012 05 15 00 56062.000 -4.568164145871438e-08 1.508742531482607e-07 3.743407960303485e-09 2012 06 15 00 56093.000 7.758520983717164e-09 6.732906584122389e-08 3.479079546378625e-09 2012 07 15 00 56123.000 5.573149569356302e-08 9.862454585854688e-08 3.787089368267203e-09 2012 08 15 00 56154.000 6.340530099294225e-08 5.608623618405039e-08 4.012713649786644e-09 2012 09 15 00 56185.000 1.525260420222152e-08 -5.950509137549649e-08 4.079943472284200e-09 2012 10 15 00 56215.000 7.485979153996170e-09 -7.098041771121820e-08 3.380800937928133e-09 2012 11 15 00 56246.000 4.547953466720354e-09 -4.209288641223093e-08 3.828903702754733e-09 2012 12 15 00 56276.000 -1.004697239351069e-07 -5.661920794514225e-08 3.663349616002228e-09