Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_COSTG_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 -8.096910904856192e-08 1.175395513200727e-08 3.558781434893237e-09 2015 02 15 00 57068.000 5.140632676198410e-09 4.703099311479558e-08 3.633241562293836e-09 2015 03 15 00 57096.000 7.245036078149250e-09 -1.303980536293702e-08 4.153163082392047e-09 2015 04 15 00 57127.000 2.827459042609639e-08 -3.406596115268580e-08 4.148700934574264e-09 2015 05 15 00 57157.000 1.953184534004808e-08 -7.630203709272527e-08 4.381927865767279e-09 2015 06 15 00 57188.000 -1.477433123523549e-08 -8.156155915590375e-08 4.196882906313699e-09 2015 07 15 00 57218.000 4.796463815546329e-08 1.366693811490805e-08 4.038051269408069e-09 2015 08 15 00 57249.000 6.541015972891651e-08 4.454053520276133e-08 4.433751607640270e-09 2015 09 15 00 57280.000 3.660069254660399e-08 -9.830324214414903e-08 4.659003823507421e-09 2015 10 15 00 57310.000 1.492298680783361e-08 -1.113878653498606e-07 5.065095817672548e-09 2015 11 15 00 57341.000 4.240501464425796e-08 -1.306961932357558e-08 4.837462207101419e-09 2015 12 15 00 57371.000 1.244363109472608e-08 -1.156607528368002e-07 4.820948347329401e-09