Non-Tidal Ocean Angular Momentum
Non-Tidal ocean angular momentum (OAM) time-series as separated into the contributions of the pressure distribution (matter terms) and horizontal ocean transports (motion terms) are provided for a range of different numerical ocean model experiments that include both unconstrained simulations and ocean state estimates. OAM can be linearly transformed into non-tidal ocean excitation functions as described by Gross (2009).
Ocean Model Experiments
| Name | Ocean Model | Data Span | Resolution | Comments |
|---|---|---|---|---|
| ponte98.oam | MITgcm | Jan 1985 to Apr 1996 | 5 days | - |
| johnson01.oam | POCM_4B | Jan 1988 to Dec 1997 | 3 days | - |
| c20010701.oam | MITgcm | Jan 1980 to Mar 2002 | 1 day | - |
| ECCO_50yr.oam | MITgcm | Jan 1949 to Dec 2002 | 10 days | - |
| ECCO_kf049f.oam | MITgcm | Jan 1993 to Mar 2006 | 1 day | - |
| ECCO_kf066a2.oam | MITgcm | Jan 1993 to Dec 2008 | 1 day | - |
| ECCO_kf066b.oam | MITgcm | Jan 1993 to Dec 2008 | 1 day | - |
| ECCO_kf079.oam | MITgcm | Jan 1993 to Mar 2020 | 1 day | - |
| ECCO_kf080i.oam | MITgcm | Jan 1993 to Mar 2020 | 1 day | - |
| ECCO_v4r3_noFWF.oam | MITgcm | Jan 1992 to Dec 2015 | 1 hour | w/o FWF |
| ECCO_v4r3_yesFWF.oam | MITgcm | Jan 1992 to Dec 2015 | 1 hour | with FWF |
| ECCO_v4r4b_IBremoved_noFWF.oam | MITgcm | Jan 1992 to Dec 2017 | 1 hour | w/o FWF; IB removed; corrected in June 2021 |
| ECCO_v4r4b_noIBremoved_noFWF.oam | MITgcm | Jan 1992 to Dec 2017 | 1 hour | w/o FWF; IB not removed; corrected in June 2021 |
| ECCO_v4r4b_IBremoved_yesFWF.oam | MITgcm | Jan 1992 to Dec 2017 | 1 hour | with FWF; IB removed; corrected in June 2021 |
| ECCO_v4r4b_noIBremoved_yesFWF.oam | MITgcm | Jan 1992 to Dec 2017 | 1 hour | with FWF; IB not removed; corrected in June 2021 |
| MITgcm_LLC540_UBonn.oam | MITgcm | Jan 2007 to Dec 2011 | 1 day | IB removed; Reference |
All available experiments can be downloaded here.
*FWF: Net-effects of freshwater fluxes from continental (and atmospheric) storages into the oceans are explicitly considered.
*IB: Bottom pressure variations due to the inverse barometric effect are removed.
Gross, R. S. (2009), Earth Rotation Variations -- Long Period, In: Herring, T. (ed.), Treatise on Geophysics, Volume 3: Geodesy, p. 239-294, Elsevier, Amsterdam.
Contact
Dr. Henryk Dobslaw
Earth System Modelling
Telegrafenberg
Building A20, room 316
14473 Potsdam
tel. +49 331 288-1974