Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_COSTG_monthly_2004.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 : 15.01.2004, 00:00 UTC until 15.12.2004, 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 2004 01 15 00 53019.000 -6.705013858243377e-08 2.110466626027356e-07 -1.531215257309223e-09 2004 02 15 00 53050.000 -9.152497401494738e-08 3.694827416261985e-08 -1.885124698808297e-09 2004 03 15 00 53079.000 -5.145658710789956e-08 9.467796389852660e-08 -1.388410762740595e-09 2004 04 15 00 53110.000 -5.297012877911700e-08 1.396844944524681e-07 -1.460420408422862e-09 2004 05 15 00 53140.000 -1.924868697621324e-07 -1.437121201773832e-08 -9.402082773453814e-10 2004 06 15 00 53171.000 -1.182844292514150e-07 7.641534858528839e-08 -9.594106952747294e-10 2004 07 15 00 53201.000 -7.637248097555650e-08 3.364581828213433e-08 -1.643608550801073e-09 2004 08 15 00 53232.000 -1.520829938272124e-08 6.247958483824382e-08 -1.362175456722280e-09 2004 09 15 00 53263.000 -6.995903107953039e-08 2.496255869095375e-08 -1.363720051940694e-09 2004 10 15 00 53293.000 -3.481725503540888e-08 5.065355158884217e-08 -1.162125896866946e-09 2004 11 15 00 53324.000 -2.783389234235653e-08 1.091791491399364e-07 -7.559599048587680e-10 2004 12 15 00 53354.000 -1.248424175707964e-07 1.174016008451656e-07 -2.831562747160261e-10