Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_COSTG_monthly_2023.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 : 15.01.2023, 00:00 UTC until 15.12.2023, 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 2023 01 15 00 59959.000 2.266454400183377e-08 7.095111364455985e-09 -8.713521773932850e-09 2023 02 15 00 59990.000 1.034046319899512e-07 -1.246898929604527e-07 -8.846851746353063e-09 2023 03 15 00 60018.000 1.142302093803489e-07 2.990354919508029e-09 -8.825327847635808e-09 2023 04 15 00 60049.000 1.349388287998432e-07 -8.419194965623689e-08 -8.497969776210140e-09 2023 05 15 00 60079.000 6.205357204783517e-08 -7.672021116900633e-08 -7.841516132442526e-09 2023 06 15 00 60110.000 5.572055506246799e-08 -4.188492293495277e-08 -8.631262191087450e-09 2023 07 15 00 60140.000 8.451265777437697e-08 -1.573732883120707e-07 -8.126631198567726e-09 2023 08 15 00 60171.000 1.380076784791174e-07 -1.341421815573184e-07 -8.409844978497661e-09 2023 09 15 00 60202.000 7.485444211362149e-08 -2.035940523214424e-07 -8.448058204192766e-09 2023 10 15 00 60232.000 6.691165106520538e-08 -8.013459576182437e-08 -8.358490578115374e-09 2023 11 15 00 60263.000 7.620265050582620e-08 -2.991491385907102e-08 -8.674154755997365e-09 2023 12 15 00 60293.000 1.258993360469163e-08 -1.496214457735994e-07 -8.254488388455673e-09