Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_COSTG_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 8.738837684188505e-08 -1.211184888130550e-07 -6.307564187466079e-09 2020 02 15 00 58894.000 2.858397281220460e-08 -8.909662752282801e-08 -6.488849701231973e-09 2020 03 15 00 58923.000 1.010747407459028e-07 7.052238108651527e-09 -6.763121540584745e-09 2020 04 15 00 58954.000 3.566268581933218e-08 -6.355863793859582e-08 -6.924124206849632e-09 2020 05 15 00 58984.000 -7.887296256415632e-08 -1.809726558389697e-07 -6.955399213537919e-09 2020 06 15 00 59015.000 -1.239048689513911e-08 -7.694782680077513e-08 -7.688244202085953e-09 2020 07 15 00 59045.000 -8.735132858872345e-08 -1.418284347687437e-07 -7.952473205905005e-09 2020 08 15 00 59076.000 6.060965749662322e-08 -9.262857549983190e-08 -8.486194753514086e-09 2020 09 15 00 59107.000 4.069591007036599e-08 -1.721313299357087e-07 -8.505498708644151e-09 2020 10 15 00 59137.000 7.127168806440027e-08 -1.068104139385864e-07 -8.361217927743447e-09 2020 11 15 00 59168.000 7.040674752829647e-08 -9.596589072703907e-08 -8.848684782859278e-09 2020 12 15 00 59198.000 5.020388898183262e-08 -4.320955915496517e-08 -9.154600917241081e-09