Telegrafenberg
Building A20, room 316
14473 Potsdam
tel. +49 331 288-1974
Non-Tidal Ocean Center-of-Mass Variations
Large-scale ocean mass distributions induce time-variations in the oceans's center-of-mass that contribute to offsets between the center-of-mass of the whole Earth including its outer geophysical fluid layers, and the center-of-figure that is typically relized by geodetic instruments attached to the crust of the solid Earth (Blewitt, 2003). The offset is also commonly referred to as geocenter motion.
Oceanic Model Experiments
| Name | Ocean Model | Data Span | Resolution | Comments |
|---|---|---|---|---|
| dong97_mom.cm | MOM | Feb 1992 to Dec 1994 | 3 days | - |
| dong97_micom.cm | MICOM | Feb 1992 to Dec 1994 | 3 days | - |
| c20010701.cm | MITgcm | Jan 1980 to Mar 2002 | 1 day | - |
| ECCO_50yr.cm | MITgcm | Jan 1949 to Dec 2002 | 10 days | - |
| ECCO_kf049f.cm | MITgcm | Jan 1993 to Mar 2006 | 1 day | - |
| ECCO_kf066a2.cm | MITgcm | Jan 1993 to Dec 2008 | 1 day | - |
| ECCO_kf066b.cm | MITgcm | Jan 1993 to Dec 2008 | 1 day | - |
| ECCO_kf079.cm | MITgcm | Jan 1993 to Mar 2020 | 1 day | - |
| ECCO_kf080i.cm | MITgcm | Jan 1993 to Mar 2020 | 1 day | - |
| ECCO_v4r3_noFWF.cm | MITgcm | Jan 1992 to Dec 2015 | 1 hour | w/o FWF |
| ECCO_v4r3_yesFWF.cm | MITgcm | Jan 1992 to Dec 2015 | 1 hour | with FWF |
| ECCO_v4r4b_noFWF.cm | MITgcm | Jan 1992 to Dec 2017 | 1 hour | w/o FWF; corrected in June 2021 |
| ECCO_v4r4b_yesFWF.cm | MITgcm | Jan 1992 to Dec 2017 | 1 hour | with FWF; corrected in June 2021 |
All available experiments can be downloaded here.
*FWF: Net-effects of freshwater fluxes from continental (and atmospheric) storages into the oceans are explicitly considered.
Blewitt, G. (2003), Self-consistency in reference frames, geocenter definition, and surface loading of the solid Earth. Journal of Geophysical Research: Solid Earth, 108 (B2), 2103.