Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_GFZ_monthly_2009.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 : 15.01.2009, 00:00 UTC until 15.12.2009, 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 2009 01 15 00 54846.000 -5.225754058593966e-08 2.052339377861126e-08 4.587685624444971e-09 2009 02 15 00 54877.000 3.257822760821313e-08 8.876510463211915e-08 4.605936384712498e-09 2009 03 15 00 54905.000 6.363131351652031e-08 1.107834428034036e-07 5.196976295989206e-09 2009 04 15 00 54936.000 3.334289636167077e-08 6.983716977217050e-08 5.010912768192691e-09 2009 05 15 00 54966.000 6.967593855066772e-08 1.475879082575343e-07 4.717104046044484e-09 2009 06 15 00 54997.000 1.008755077520606e-08 8.833480101680906e-08 3.994130823304160e-09 2009 07 15 00 55027.000 -1.579876479036358e-08 -4.415590453440688e-08 3.603348706757729e-09 2009 08 15 00 55058.000 2.171035878999192e-08 -4.287906620484313e-08 3.769731332330325e-09 2009 09 15 00 55089.000 -4.979965293466093e-08 -1.124190416998880e-07 3.764650905538633e-09 2009 10 15 00 55119.000 1.422113197493981e-08 1.903201095808117e-08 3.248143618274528e-09 2009 11 15 00 55150.000 8.421164541575069e-08 -5.790628710672591e-08 2.660514222155036e-09 2009 12 15 00 55180.000 -1.919914121569124e-08 1.181408459571090e-08 2.899177764470881e-09