Product: Ocean Center of Mass
CM - ECCO_kf079 - Version metadata
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ECCO_kf079.cm| Title | CM - ECCO_kf079 |
| Date | 2020-08-12 |
| Volume | ECCO_kf079 |
| Content | oceanic center-of-mass (COM) Ocean model : ECCO (based on MITgcm) Horizontal domain : 80 degrees South to 80 degrees North latitude Horizontal resolution : 1/3 degree at equator to 1 degree at high latitudes by 1 degree longitude Vertical resolution : 46 levels ranging in thickness from 10 m at surface to 400 m at depth Boussinesq model? : Yes Tabulated COM corrected for volume changes due to steric effects? : No (correction is negligibly small, being 6 orders of magnitude smaller than the COM variations) Ocean model forcing : Surface wind stress : 12-hour NCEP/NCAR reanalysis Surface heat flux : Daily NCEP/NCAR reanalysis Surface freshwater flux : Daily NCEP/NCAR reanalysis (freshening only) Surface pressure : None Data assimilated : None |
| Documentation | File units : meters 1. The tabulated date corresponds to the midpoint of the 1-day-long averaging interval. 2. The mean has been removed from the tabulated COM values. The mean oceanic COM (m; x,y,z) = -7.65134890E+05 -4.69377674E+05 -9.60916455E+05 3. The mass of the ocean model is 1.366126000458376E+21 kg. This ocean mass can be used to convert the COM values given here to geocenter values. 4. The tidal contamination present in previous versions of the ECCO/JPL data assimilative ocean models (e.g., kf049f,kf066b) is not present in this model. For a discussion of this problem see Gross, An Improved Empirical Model for the Effect of Long-Period Ocean Tides on Polar Motion, Journal of Geodesy, vol. 83(7), pp. 635-644, doi:10.1007/s00190-008-0277-y, 2009. |
| Time Interval | 1-day averages |
| Time Start | 1993-01-02 |
| Time End | 2020-03-30 |
| Data Points | 9950 |
| Data | MJD, COM_X, COM_Y, COM_Z |
| Format | ASCII |
| Frequency | Irregular |
| Keywords | Geophysical fluids, COM |
| Published by | GGFC Special Bureau for the Oceans |
| Contact | Richard.Gross@jpl.nasa.gov |
| Distribution | onLine |
| Source | ftp://ig2-dmz.gfz-potsdam.de/GGFC-Oceans/COM/ECCO_kf079.cm |