Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_GFZ_monthly_2021.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 : 15.01.2021, 00:00 UTC until 15.12.2021, 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 2021 01 15 00 59229.000 5.144832112655589e-08 -5.671635308716602e-09 -9.501541910744468e-09 2021 02 15 00 59260.000 2.615105939762802e-08 -9.569698184446467e-08 -9.865270111345475e-09 2021 03 15 00 59288.000 1.476029538630681e-07 -2.805227601293898e-08 -9.441318546197859e-09 2021 04 15 00 59319.000 6.012459821543378e-08 -1.175939820820348e-07 -8.711008536735874e-09 2021 05 15 00 59349.000 5.311160014926172e-08 -3.777727751310044e-08 -9.272922187553066e-09 2021 06 15 00 59380.000 2.461921293436909e-08 -8.611546725585648e-08 -9.788519631103063e-09 2021 07 15 00 59410.000 2.604499184750701e-08 -5.815633449415925e-08 -9.933376243740081e-09 2021 08 15 00 59441.000 1.378041224586669e-08 -1.561434644219576e-07 -9.767502354808501e-09 2021 09 15 00 59472.000 7.214578254852723e-08 -3.364280464506276e-08 -9.566484899858251e-09 2021 10 15 00 59502.000 7.246766537680045e-08 -3.377608516043787e-08 -9.696117875052760e-09 2021 11 15 00 59533.000 6.948302741824107e-08 -4.234285965386715e-08 -9.917990831202553e-09 2021 12 15 00 59563.000 6.491204356885334e-08 -1.501870634295276e-07 -9.654265195851099e-09