Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_COSTG_monthly_2024.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 : 15.01.2024, 00:00 UTC until 15.12.2024, 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 2024 01 15 00 60324.000 5.880876187918228e-08 -9.147770157885641e-08 -8.410205170848875e-09 2024 02 15 00 60355.000 1.332580166830266e-07 -9.247578678485048e-08 -8.350752338297051e-09 2024 03 15 00 60384.000 7.483393846321830e-08 -1.399219726688666e-07 -8.121705152013637e-09 2024 04 15 00 60415.000 9.053779454004446e-08 -7.025006135670903e-08 -8.061986149974906e-09 2024 05 15 00 60445.000 -2.089854129506090e-08 -1.500711370364661e-07 -8.037808979317177e-09 2024 06 15 00 60476.000 -2.201458289411718e-08 -1.430393501485593e-07 -7.981606882157243e-09 2024 07 15 00 60506.000 3.698828975633050e-08 -1.131329221009404e-07 -7.813300065850229e-09 2024 08 15 00 60537.000 -2.235449336149883e-09 -2.011781642262452e-07 -7.627835392700599e-09 2024 09 15 00 60568.000 1.336985877983364e-07 -2.260987959690819e-07 -7.455659986883038e-09 2024 10 15 00 60598.000 1.145965361909868e-07 -2.218880163923000e-07 -7.312088192151023e-09 2024 11 15 00 60629.000 2.475108948246593e-08 -1.068336894548815e-07 -7.790299661475959e-09 2024 12 15 00 60659.000 2.950665686361391e-08 -2.616283014913510e-07 -7.297927798213797e-09