ECCO Geometry Parameters for the 0.5 degree Lat-Lon Model Grid (Version 4 Release 4)

(ECCO_L4_GEOMETRY_05DEG_V4R4)
VersionV4r4
Processing Level4
Start/Stop Date1992-Jan-01 to 2018-Jan-01
Short NameECCO_L4_GEOMETRY_05DEG_V4R4
DescriptionThis dataset provides geometric parameters for the regular 0.5-degree lat-lon grid from the ECCO Version 4 Release 4 (V4r4) ocean and sea-ice state estimate. Parameters include areas and lengths of grid cell sides and the horizontal and vertical coordinates of grid cell centers and corners. Additional information related to the global domain geometry (e.g., bathymetry and land/ocean masks) are also included. However, users should note these domain geometry fields are approximations because they have been interpolated from the ECCO lat-lon-cap 90 (llc90) native model grid. Users interested in exact budget closure calculations for volume, heat, salt, or momentum should use ECCO fields provided on the llc90 grid. Estimating the Circulation and Climate of the Ocean (ECCO) state estimates are dynamically and kinematically-consistent reconstructions of the three-dimensional, time-evolving ocean, sea-ice, and surface atmospheric states. ECCO V4r4 is a free-running solution of a global, nominally 1-degree configuration of the MIT general circulation model (MITgcm) that has been fit to observations in a least-squares sense. Observational data constraints used in V4r4 include sea surface height (SSH) from satellite altimeters [ERS-1/2, TOPEX/Poseidon, GFO, ENVISAT, Jason-1,2,3, CryoSat-2, and SARAL/AltiKa]; sea surface temperature (SST) from satellite radiometers [AVHRR], sea surface salinity (SSS) from the Aquarius satellite radiometer/scatterometer, ocean bottom pressure (OBP) from the GRACE satellite gravimeter; sea ice concentration from satellite radiometers [SSM/I and SSMIS], and in-situ ocean temperature and salinity measured with conductivity-temperature-depth (CTD) sensors and expendable bathythermographs (XBTs) from several programs [e.g., WOCE, GO-SHIP, Argo, and others] and platforms [e.g., research vessels, gliders, moorings, ice-tethered profilers, and instrumented pinnipeds]. V4r4 covers the period 1992-01-01T12:00:00 to 2018-01-01T00:00:00.
DOI10.5067/ECG5A-GRD44
MeasurementOCEANS > SEA ICE > SEA ICE CONCENTRATION
Platform/Sensor
ProjectEstimating the Circulation and Climate of the Ocean (ECCO)
Data ProviderPublisher: PO.DAAC
Creator: ECCO Consortium, Fukumori, I., Wang, O., Fenty, I., Forget, G., Heimbach, P., & Ponte, R. M.
Release Place: PO.DAAC
Release Date: 2021-Apr-19

FormatnetCDF-4
Keyword(s)ECCO, Estimating the Circulation and Climate of the Ocean, reconstruction, remote sensing, in situ, estimate, ocean, global, model, grid, geometry
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution
Spatial Resolution: 0.5 Decimal Degrees x 0.5 Decimal Degrees
 
Coverage
North Bounding Coordinate: 90 degrees
South Bounding Coordinate: -90 degrees
West Bounding Coordinate: 180 degrees
East Bounding Coordinate: -180 degrees
Time Span: 1992-Jan-01 to 2018-Jan-01
 
Projection
Projection Type: Cylindrical Lat-Lon
Projection Detail: Geolocation information included for each pixel
Ellipsoid: WGS84
 
NameLong NameUnit
areaarea of lat-lon grid cellm2
Depthmodel seafloor depth below ocean surface at restm
drFdistance between the upper and lower interfaces of the model grid cellm
hFacCvertical open fraction of grid cell1
latitudelatitude at grid cell centerdegrees_north
latitude_bndslatitudes of grid cell edges
longitudelongitude at grid cell centerdegrees_east
longitude_bndslongitudes of grid cell edges
maskCwet/dry boolean mask for grid cell
Zdepth of grid cell centerm
Z_bndsdepths of grid cell upper and lower interfaces
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Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.
Citation ECCO Consortium, Fukumori, I., Wang, O., Fenty, I., Forget, G., Heimbach, P., & Ponte, R. M.. 2021. ECCO Geometry Parameters for the 0.5 degree Lat-Lon Model Grid (Version 4 Release 4). Ver. V4r4. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/ECG5A-GRD44

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Journal Reference ECCO Consortium, Fukumori, I., Wang, O., Fenty, I., Forget, G., Heimbach, P., & Ponte, R. M.. 2021. Synopsis of the ECCO Central Production Global Ocean and Sea-Ice State Estimate (Version 4 Release 4)., Zenodo. https://doi.org/10.5281/zenodo.3765928