Bass Strait Pre-SWOT Level-4 Hourly MITgcm LLC4320 Native Grid 2km Oceanographic Dataset Version 1.0
(MITgcm_LLC4320_Pre-SWOT_JPL_L4_BassStrait_v1.0)| Version | 1.0 |
| Processing Level | 4 |
| Start/Stop Date | 2011-Sep-13 to 2012-Nov-15 |
| Short Name | MITgcm_LLC4320_Pre-SWOT_JPL_L4_BassStrait_v1.0 |
| Description | This dataset provides a regional multivariate oceanographic state estimate from a global ocean numerical simulation with a focus on the Bass Strait region. The global ocean simulation is based on the MIT general circulation model (MITgcm) with Lat-Lon-Cap grid (LLC) layout and 1/48-degree (2km at equator) nominal horizontal resolution. This simulation is often referred to as LLC4320 in the community and existing publications. The simulation has 90 vertical levels, with about 1-m vertical resolution at the surface and 30 m down to 500 m, for optimized resolution of the upper-ocean processes. The model has zero parameterized horizontal diffusivity. In the vertical direction, the K-Profile Parameterization (KPP) is used for boundary layer turbulent mixing. It is spun up progressively from the lower resolution MITgcm simulation from the Estimating the Circulation & Climate of the Ocean (ECCO), and forced by the 6-hourly ERA-Interim atmosphere reanalysis ( https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era-interim ). A synthetic surface pressure field consisting of the 16 most dominant tidal constituents is used to dynamically mimic the tidal forcing. The dataset provides hourly oceanographic variables at native grid. Three-dimensional variables include temperature, salinity, and velocity. Two-dimensional variables include sea level anomaly, ocean mixed layer thickness, bottom pressure anomaly, net freshwater flux, net heat flux, shortwave radiative flux, net salt flux, and ocean surface stress. |
| DOI | 10.5067/PRESW-BSJ10 |
| Measurement | OCEANS > OCEAN TEMPERATURE > POTENTIAL TEMPERATURE OCEANS > SALINITY/DENSITY > SALINITY OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS OCEANS > OCEAN CIRCULATION > FRESH WATER FLUX OCEANS > OCEAN HEAT BUDGET > HEAT FLUX |
| Platform/Sensor | MITgcm / Platform Name: Massachusetts Institute of Technology General Circulation Model (MITgcm) Computer SENSOR Name: Computer (Computer) |
| Data Provider | Publisher: PO.DAAC Creator: Menemenlis, D., Hill, C., Henze, C. E., Wang, J., & Fenty, I. Release Place: PO.DAAC Release Date: 2021-Feb-10 |
| Format | netCDF-4 |
| Keyword(s) | EARTH SCIENCE SERVICES > MODELS > EARTH SCIENCE MODELS |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Resolution Spatial Resolution: 2 Kilometers x 2 Kilometers Temporal Resolution: Hourly - < Daily Coverage Region: PACIFIC OCEAN North Bounding Coordinate: -38.00927 degrees South Bounding Coordinate: -41.99857 degrees West Bounding Coordinate: 143.8646 degrees East Bounding Coordinate: 147.8438 degrees Time Span: 2011-Sep-13 to 2012-Nov-15 Projection Ellipsoid: WGS 84 |
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| Available for access in-region with AWS Cloud | |
Region | |
| us-west-2 | |
| podaac-ops-cumulus-public/MITgcm_LLC4320_Pre-SWOT_JPL_L4_BassStrait_v1.0/ | |
| podaac-ops-cumulus-protected/MITgcm_LLC4320_Pre-SWOT_JPL_L4_BassStrait_v1.0/ | |
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| Name | Long Name | Unit |
|---|---|---|
| AngleCS | AngleCS | m2 |
| AngleSN | AngleSN | m2 |
| Depth | model seafloor depth below ocean surface at rest | m |
| DXC | cell_x_size_at_u_location | m |
| DXG | cell_x_size_at_v_location | m |
| DXV | cell_x_size_at_f_location | m |
| DYC | cell_y_size_at_v_location | m |
| DYG | cell_y_size_at_u_location | m |
| DYU | cell_y_size_at_f_location | m |
| Eta | Model sea level anomaly | m |
| i | grid index in x for variables at tracer and 'v' locations | |
| i_g | grid index in x for variables at 'u' and 'g' locations | |
| j | grid index in y for variables at tracer and 'u' locations | |
| j_g | grid index in y for variables at 'v' and 'g' locations | |
| k | grid index in z for tracer variables | |
| k_l | grid index in z for variables at upper 'w' location | |
| k_p1 | grid index in z for variables at upper 'w' location | |
| k_u | grid index in z for variables at lower 'w' location | |
| KPPhbl | Ocean mixed layer thickness defined by mixing scheme | m |
| nb | grid index for coordinate bounds | |
| oceFWflx | Net freshwater flux into the ocean | kg m-2 s-1 |
| oceQnet | Net heat flux into the ocean surface | W m-2 |
| oceQsw | Net shortwave radiative flux across the ocean surface | W m-2 |
| oceSflux | water_flux_into_sea_water | g m-2 s-1 |
| oceTAUX | Ocean surface stress in the model +x direction | N m-2 |
| oceTAUY | Ocean surface stress in the model +y direction | N m-2 |
| PhiBot | Ocean hydrostatic bottom pressure anomaly | m2 s-2 |
| RAZ | vertical face area of vorticity points | m2 |
| Salt | Salinity | 1e-3 |
| Theta | Potential temperature | degree_C |
| time | time | hours since 2011-01-01 00:00:00 |
| U | Horizontal velocity in the model +x direction | m s-1 |
| V | Horizontal velocity in the model +y direction | m s-1 |
| W | Vertical velocity | m s-1 |
| XC | longitude of tracer grid cell center | degrees_east |
| XC_bnds | longitudes of tracer grid cell corners | |
| XG | longitude of 'southwest' corner of tracer grid cell | degrees_east |
| YC | latitude of tracer grid cell center | degrees_north |
| YC_bnds | latitudes of tracer grid cell corners | |
| YG | latitude of 'southwest' corner of tracer grid cell | degrees_north |
| Z | depth of tracer grid cell center | m |
| Z_bnds | depths of tracer grid cell upper and lower interfaces | |
| Zl | depth of tracer grid cell upper interface | m |
| Zp1 | depth of tracer grid cell interface | m |
| Zu | depth of tracer grid cell lower interface | m |
| USER'S GUIDE | |
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| READ-ME | |
| DATA RECIPE | |
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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 | Menemenlis, D., Hill, C., Henze, C. E., Wang, J., & Fenty, I.. 2021. Bass Strait Pre-SWOT Level-4 Hourly MITgcm LLC4320 Native Grid 2km Oceanographic Dataset Version 1.0. Ver. 1.0. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/PRESW-BSJ10
For more information see Data Citations and Acknowledgments.
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| Journal Reference | Yu, X., Ponte, A. L., Elipot, S., Menemenlis, D., Zaron, E. D., & Abernathey, R.. 2019. Surface kinetic energy distributions in the global oceans from a high‐resolution numerical model and surface drifter observations, Geophysical Research Letters, 46, 16. 10.1029/2019gl083074 Torres, H. S., Klein, P., Menemenlis, D., Qiu, B., Su, Z., Wang, J., et al.. 2018. Partitioning ocean motions into balanced motions and internal gravity waves: A modeling study in anticipation of future space missions, Journal of Geophysical Research: Oceans, 123, 11. 10.1029/2018JC014438 Arbic, B. K., et al.. 2018. A primer on global internal tide and internal gravity wave continuum modeling in HYCOM and MITgcm., New Frontiers in Operational Oceanography. 10.17125/gov2018.ch13 Su, Z., Wang, J., Klein, P., Thompson, A. F., & Menemenlis, D. . 2018. Ocean submesoscales as a key component of the global heat budget, Nature Communications, 9, 1. 10.1038/s41467-018-02983-w Wang, J., Fu, L., Qiu, B., Menemenlis, D., Farrar, J. T., Chao, Y., Thompson, A. F., & Flexas, M. M.. 2018. An Observing System Simulation Experiment for the Calibration and Validation of the Surface Water Ocean Topography Sea Surface Height Measurement Using In Situ Platforms, Journal of Atmospheric and Oceanic Technology , 35, 2. 10.1175/jtech-d-17-0076.1 Rocha, C. B., Chereskin, T. K., Gille, S. T., & Menemenlis, D. . 2016. Mesoscale to submesoscale wavenumber spectra in Drake Passage, Journal of Physical Oceanography, 46, 2. 810.1175/JPO-D-15-0087.1 |
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