Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_GFZ_monthly_2019.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 : 15.01.2019, 00:00 UTC until 15.12.2019, 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 2019 01 15 00 58498.000 5.335906207076306e-08 -5.912966097319351e-08 -1.975194032172517e-09 2019 02 15 00 58529.000 5.244576827219944e-08 -2.485344470966930e-08 -2.689724575697188e-09 2019 03 15 00 58557.000 1.526271603443922e-08 -3.395994734598353e-08 -2.581840944759201e-09 2019 04 15 00 58588.000 5.880845543907834e-08 -6.999326601350333e-08 -2.759333610755402e-09 2019 05 15 00 58618.000 4.451847464336568e-08 -6.535770882416255e-08 -3.141341137942991e-09 2019 06 15 00 58649.000 1.622170507418196e-08 -1.519693957569200e-08 -3.662691784465966e-09 2019 07 15 00 58679.000 -1.195853151804486e-08 -6.877378100320609e-08 -4.060281648254264e-09 2019 08 15 00 58710.000 2.036512515106507e-08 -1.161301915819800e-07 -4.867125580052781e-09 2019 09 15 00 58741.000 5.508719829415773e-08 -1.052241307163729e-07 -5.048712511700408e-09 2019 10 15 00 58771.000 2.679631169701617e-08 -5.927983537391607e-08 -5.756133553869394e-09 2019 11 15 00 58802.000 3.979120821580763e-08 -5.077883544354185e-08 -5.723121779750893e-09 2019 12 15 00 58832.000 4.616082074135695e-08 -1.097527141065394e-07 -6.254635815619566e-09