Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_GFZ_monthly_2008.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 : 15.01.2008, 00:00 UTC until 15.12.2008, 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 2008 01 15 00 54480.000 -3.435976449697761e-08 9.677493367031038e-08 6.707209200735506e-09 2008 02 15 00 54511.000 -1.711102983182253e-08 9.071215738200822e-08 6.617159246820857e-09 2008 03 15 00 54540.000 -2.454496304785843e-08 1.136331248087941e-07 6.618440340818505e-09 2008 04 15 00 54571.000 8.685281749271314e-09 5.635149696020040e-08 5.867657324988276e-09 2008 05 15 00 54601.000 -2.791673424572225e-08 1.492061977272793e-07 6.176383331248981e-09 2008 06 15 00 54632.000 -1.818741464019541e-08 1.007140064773131e-07 6.168081584878787e-09 2008 07 15 00 54662.000 2.842562320239935e-08 1.109049214756706e-07 5.903660167412839e-09 2008 08 15 00 54693.000 -1.629387058799320e-08 6.666978498446996e-08 5.352572623169287e-09 2008 09 15 00 54724.000 -2.104412384016528e-08 6.101924910874271e-08 5.637113579117804e-09 2008 10 15 00 54754.000 3.900178187766176e-08 3.091634797748255e-08 5.466859577221474e-09 2008 11 15 00 54785.000 7.187171713693335e-08 1.262383664270924e-07 5.401938289741310e-09 2008 12 15 00 54815.000 -8.141173917602752e-08 5.501450890259902e-08 5.063539489830799e-09