Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_GFZ_monthly_2015.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 : 15.01.2015, 00:00 UTC until 15.12.2015, 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 2015 01 15 00 57037.000 -8.200903789179168e-08 1.325923211101427e-08 3.614272574128549e-09 2015 02 15 00 57068.000 1.799118094566629e-08 4.012526999333016e-08 3.711835045855798e-09 2015 03 15 00 57096.000 -2.775644437052272e-09 -1.062037158893389e-08 4.263937692217471e-09 2015 04 15 00 57127.000 2.964330824339418e-08 -9.370072476890596e-09 4.174902783974595e-09 2015 05 15 00 57157.000 1.365300302490273e-08 -8.098861359527059e-08 4.301040767140073e-09 2015 06 15 00 57188.000 -1.654251409412705e-08 -8.840368410108334e-08 4.081219489159464e-09 2015 07 15 00 57218.000 4.233338763547628e-08 -2.129438616994476e-08 3.922138351623903e-09 2015 08 15 00 57249.000 4.889436562369084e-08 3.271824132502657e-08 4.364540833260452e-09 2015 09 15 00 57280.000 3.490813582194730e-08 -9.696752256071221e-08 4.588611680602370e-09 2015 10 15 00 57310.000 2.783491516824335e-08 -1.294649745235570e-07 4.929449894485731e-09 2015 11 15 00 57341.000 5.103369031237009e-08 -2.762093510609145e-08 4.770758621324814e-09 2015 12 15 00 57371.000 5.798439616045174e-09 -1.043968812458070e-07 4.872462812131630e-09