Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_COSTG_monthly_2012.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 : 15.01.2012, 00:00 UTC until 15.12.2012, 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 2012 01 15 00 55941.000 -8.794141590842468e-08 1.924418205391371e-08 3.216436982692589e-09 2012 02 15 00 55972.000 -2.751375253645211e-08 1.080243146493486e-07 2.717621769657789e-09 2012 03 15 00 56001.000 1.477182924024916e-08 5.762662187946530e-09 3.650483661293220e-09 2012 04 15 00 56032.000 6.429942220143154e-08 4.333230914820720e-08 3.649378129556227e-09 2012 05 15 00 56062.000 -4.213855150533096e-08 1.470481217910784e-07 3.547525149859556e-09 2012 06 15 00 56093.000 -1.992754297521378e-08 5.037033412705193e-08 3.376606962185951e-09 2012 07 15 00 56123.000 5.205407922038529e-08 8.094171052510887e-08 3.740742629839096e-09 2012 08 15 00 56154.000 5.537833019251730e-08 3.975553758394318e-08 3.954626394218578e-09 2012 09 15 00 56185.000 2.228649916277994e-09 -7.592612056876911e-08 3.991942633128178e-09 2012 10 15 00 56215.000 -7.223542772908577e-09 -6.897585766284058e-08 3.407005795714860e-09 2012 11 15 00 56246.000 -9.453509185495742e-10 -3.564842758027860e-08 3.780374216137966e-09 2012 12 15 00 56276.000 -9.965939798146682e-08 -6.370357988720542e-08 3.570948492254131e-09