Product: Global Oceanic Angular Momentum
OAM - ECCO_v4r4b_noIBremoved_noFWF - Version metadata

OAM - ECCO_v4r4b_noIBremoved_noFWF

2021-07-20

ECCO_v4r4b_noIBremoved_noFWF

Global oceanic angular momentum mass and motion terms, and total ocean mass (includes effects of sea ice); mass term based on full sea level with no inverted barometer (IB) signal removed, correction to v4r4 files based on errata issued in June 2021 (https://www.ecco-group.org/products-ECCO-V4r4.htm)
Ocean model : ECCO Version 4 Release 4b (based on MITgcm)
Horizontal domain : Global
Horizontal resolution : Variable spacing ranging from 22 km to 111 km (see Forget et al. 2015, section 2)
Vertical resolution : 50 levels ranging in thickness from 10 m at surface to 460 m at depth
Boussinesq model? : Yes
Tabulated mass term corrected for volume changes due to steric effects? : Yes
Does not include mass effects from net real freshwater flux

Ocean model forcing : 6-hourly ERA-Interim values adjusted by optimization (see Forget et al. 2015, section 3.5); atmospheric surface pressure included but not adjusted by optimization (see Fukumori et al. 2019)

Data assimilated : sea level altimetry, in situ temperature/salinity, satellite SST/SSS, bottom pressure, sea-ice concentration (see Fukumori et al. 2019)

File units : kg-m**2/s for OAM, kg for mass The mean has been removed from the tabulated OAM and mass values.
The mean OAM mass term (kg-m**2/s; x,y,z) = 1.35446093E+29 1.04770776E+29 2.92757161E+30
The mean OAM motion term (kg-m**2/s; x,y,z) = -9.05110433E+23 9.38056495E+23 1.18721438E+25
The mean total ocean mass (kg) = 1.37371282E+21

hourly

1992-01-01

2017-12-31

210359

MJD, mass_X, mass_Y, mass_Z, motion_X, motion_Y, motion_Z

ASCII

Irregular

Geophysical fluids, OAM

Forget et al. 2015, doi:10.5194/gmd-8-3071-2015

GGFC Special Bureau for the Oceans

rponte@aer.com

onLine

ftp://rz-ftp2.gfz.de/2025012844000415-esmdata/Products/GGFC-Oceans/OAM/ECCO_v4r4b_noIBremoved_noFWF.oam