Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_GFZ_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 3.777930628762936e-08 6.051228228769508e-08 -8.953778708433999e-09 2023 02 15 00 59990.000 9.989677032946053e-08 -1.334201370500954e-07 -8.819646771050742e-09 2023 03 15 00 60018.000 7.493275665119597e-08 -3.511764713117867e-08 -8.896712360858308e-09 2023 04 15 00 60049.000 8.978350173250961e-08 -1.205730734576599e-07 -8.656925437510762e-09 2023 05 15 00 60079.000 4.290084509727503e-08 -6.812149341762923e-08 -7.862155660243817e-09 2023 06 15 00 60110.000 3.181282247693920e-08 -2.001610605767236e-08 -8.671183018453691e-09 2023 07 15 00 60140.000 8.356554749517561e-08 -1.094891981382392e-07 -8.294569937819054e-09 2023 08 15 00 60171.000 1.392729804935946e-07 -1.228612632051822e-07 -8.631012692378163e-09 2023 09 15 00 60202.000 4.822111757817896e-08 -2.388064720215561e-07 -8.800414106207260e-09 2023 10 15 00 60232.000 2.467071186346193e-08 -9.165423840531166e-08 -8.632361436373387e-09 2023 11 15 00 60263.000 6.479493985538065e-08 6.377548141638291e-09 -8.973787051521507e-09 2023 12 15 00 60293.000 9.450059848122150e-09 -1.249019787608357e-07 -8.604713470409367e-09