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A Hydrodynamic-Sediment Transport Numerical Model for the Waipaoa Shelf, New Zealand: Model Archive

Julia Moriarty; Courtney Harris; Mark G. Hadfield

Orcid IDs:
0000-0003-2692-2209 (JM); 0000-0443-1112-6767 (CM); 0022-5611-2258-1319 (MH)

Details about Dataset:
These files are compressed versions of input files, model code, and output used for two publications (see below). Compressed files with the .gz file extension can be opened with Gzip GNU software (open source). Compressed files with the .tar file extension can be opened with Gzip Tar software (open source).

Many of the input / output files use the NetCDF (Network Common Data Form) file format. These have "nc" as a file extension and can be read using a variety of open source tools: see

For information about the Regional Ocean Modeling System (ROMS), its model code and input / output, see

Location (place name):
Waipaoa Shelf, New Zealand

Location (bounding box coordinates):
370 07 23’ N, 0760 09 12’W; 370 13 33’ N, 0760 18 28’W; 370 39 12’ N, 0760 54 00’W; 370 34 54’ N, 0760 59 24’W

Description of Data (Abstract):
A three-dimensional numerical model of the Chesapeake Bay (east coast of the United States) was used to simulate the period Jan.2010-Dec.2014. The model is an implementation of the Regional Ocean Modeling System (ROMS, with modules for sediment resuspension (Warner et al. 2008), wetting-drying (Warner et al. 2013), and biogeochemistry (Estuarine Carbon Biogeochemistry, ECB, St-Laurent et al. 2020). It simulates the hydrodynamics and biogeochemistry with a uniform horizontal mesh of 600m and 20 topography-following vertical levels. Physical forcings include the ERA5 reanalysis (3-hourly) and tidal constituents from Szpilka et al. (2016). The dataset includes four numerical experiments designed to highlight the sensitivity of Chesapeake Bay hypoxia to its physical forcings: (1) control experiment with terrestrial inputs from the EPA's regulatory model (Phase 6) and with oceanic conditions from climatological observations, (2) experiment with terrestrial freshwater discharge from MOSART, (3) experiment with continental shelf conditions from Doppio, and (4) experiment with continental shelf conditions from E3SM. The model outputs are divided into 4 directories (one per experiment) each containing five years worth of model results (2010-2014) in the NetCDF format. All the metadata information necessary for the interpretation of the model outputs (dimensions, units, etc) is included inside the NetCDF files. The NetCDF files follow the CF conventions and can be opened with various software that are open source and freely available over the Internet. In addition to the model outputs, this archive includes the computer code (chesbay600m, rutgers_roms20200313rev1013) as well as the input files necessary for reproducing the model outputs of this archive. The total size of the dataset is approximately 32 gigabytes.

Publication Date:
2016 March 20

File Type:
Zip, NetCDF

Subject Keywords:
Waipaoa River continental shelf
New Zealand
sediment transport
numerical modeling
marine geology
Regional Ocean Modeling System (ROMS)

Associated Publications: 
Moriarty, J. M., Harris, C. K., and Hadfield, M. G. (2014). A hydrodynamic and sediment transport model for the Waipaoa Shelf, New Zealand: Sensitivity of fluxes to spatially-varying erodibility and model nesting. Journal of Marine Science and Engineering, 2 (2): 336-369. doi:10.3390/jmse2020336

Moriarty, J. M., Harris, C. K., and Hadfield, M. G. (2015). Event-to-seasonal sediment dispersal on the Waipaoa River Shelf, New Zealand: A numerical modeling study. Continental Shelf Research, 110: 108-123. doi:10.1016/j.csr2015.10.005