Effective Angular Momentum Functions from geodetic residuals (mass+motion term) File name : GAHS_GravIS_COSTG_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 -7.112389629805265e-08 1.200303859394471e-08 4.517267069877492e-09 2009 02 15 00 54877.000 1.778578475308351e-08 8.002104110851507e-08 4.473691812751958e-09 2009 03 15 00 54905.000 5.807112854901598e-08 1.194838185675508e-07 4.975832597508789e-09 2009 04 15 00 54936.000 8.444171736467871e-09 5.009944782915025e-08 4.806377061649372e-09 2009 05 15 00 54966.000 4.778818210801756e-08 1.154709264950367e-07 4.565722663779910e-09 2009 06 15 00 54997.000 -2.812811643384999e-09 7.004653877081761e-08 3.968121277939419e-09 2009 07 15 00 55027.000 -3.021208526493566e-08 -6.466205518329043e-08 3.525105763550735e-09 2009 08 15 00 55058.000 3.518458425863664e-09 -7.013820509346308e-08 3.760745230546212e-09 2009 09 15 00 55089.000 -6.425738608327045e-08 -1.115175062898399e-07 3.734646507909262e-09 2009 10 15 00 55119.000 3.425296166281601e-09 1.646403601256069e-08 3.293099772863730e-09 2009 11 15 00 55150.000 7.054620012858996e-08 -6.016165774495172e-08 2.704873609185848e-09 2009 12 15 00 55180.000 -3.679691737477446e-08 1.749264802793624e-08 2.899016481782081e-09