Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_GFZ_monthly_2013.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 : 15.01.2013, 00:00 UTC until 15.12.2013, 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 2013 01 15 00 56307.000 -5.716626666219077e-08 -6.969260493843633e-08 3.643800154151975e-09 2013 02 15 00 56338.000 2.364350554031579e-08 5.397168319925449e-08 3.522739916390802e-09 2013 03 15 00 56366.000 1.768831600785642e-08 5.904726952263952e-08 3.708654770744195e-09 2013 04 15 00 56397.000 -2.172014540059853e-08 1.514101705904853e-08 4.154918603831522e-09 2013 05 15 00 56427.000 4.229494686858894e-08 3.879513272567394e-08 3.822048391531200e-09 2013 06 15 00 56458.000 -1.200759197525316e-08 -2.530067343259252e-08 3.538632974455747e-09 2013 07 15 00 56488.000 -2.149581289716070e-08 2.090133254413156e-08 3.301047091498682e-09 2013 08 15 00 56519.000 -4.389393455736069e-08 -1.404506753574851e-07 3.205950055591486e-09 2013 09 15 00 56550.000 -6.096107696403466e-08 -1.572239662228669e-07 3.011494459349108e-09 2013 10 15 00 56580.000 -5.693609259101122e-09 -8.081622757309019e-08 3.304776980428666e-09 2013 11 15 00 56611.000 -4.157793167427856e-08 5.803549645565443e-08 2.931265714731199e-09 2013 12 15 00 56641.000 7.608433267530324e-09 4.866552002560161e-08 2.435410813084341e-09