A high-resolution (750m) free-running hydrodynamic simulation of the Hawkesbury Shelf region off Southeastern Australia (2012-2013) using the Regional Ocean Modeling System

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open access
Copyright: Copyright 2020, University of New South Wales
The student involved in the project Dr Nina Ribbat has given permission for the model output to be made publicly avaialble.
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Abstract
The model output is obtained from a configuration of the Regional Ocean Modeling System (www.myroms.org) free-running, hydrodynamic simulation of the Hawkesbury Shelf region of the East Australian Current System. The model has a horizontal resolution of 750m and 30 vertical s-levels. The model domain covers the continental shelf region of southeastern Australia from 31.5S- 34.5S extending ~150km offshore, and the grid is orientated 27 degrees clockwise to be predominantly orientated alongshore. The time period covered is 1 Jan 2012 to 31 Dec 2013. The model output provided are 2 hourly snapshots and daily averages of the following variables: Two-dimensional variables: Sea surface height (zeta), barotropic cross-grid velocity (u) and barotropic along-grid velocity (v)Three-dimensional variables: Temperature (temp), salinity (salt), cross-grid velocity (u), along-grid velocity (v) and vertical velocity (w).
Persistent link to this record
http://hdl.handle.net/1959.4/resource/collection/resdatac_1025/1
DOI
https://doi.org/10.26190/5ec35ca34752e
Link to External Data Repository
Electronic Location
Contact Information
Due to the size of the model output, one full month of model output from all fields is made available. For access to the full model run, contact Prof Moninya Roughan mroughan@unsw.edu.au
Research Data Creator(s)
Powell, Brian
Lead Chief Investigator
Other Contributor(s)
Corporate/Industry Contributor(s)
Publication Year
2020
Resource Type
Dataset
Keyword(s)
East Australian Current
Hawkesbury Bioregion
Hydrodynamic Modeling
Ocean Modelling
UNSW Faculty
Files
download HSM_his_22Feb2012.nc 1.36 GB The Network Common Data Form
download HSM_dailyavg_14Feb2012_8Mar2012.nc 1.87 GB The Network Common Data Form
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A high-resolution, 22-year, free-running, hydrodynamic simulation of the East Australia Current System using the Regional Ocean Modeling System
Dataset
The data is from a Regional Ocean Modeling System free-running, hydrodynamic simulation of the East Australian Current System. The model has a horizontal resolution of 2.5-6 km in the cross-shore direction and 5 km in the alongshore direction, and 30 vertical s-levels. The model domain covers the southeastern Australia oceanic region from 25.1-41.5S and 147.1-162.2E, and the grid is orientated 20 degrees clockwise to be predominantly orientated alongshore. The time period covered is 1 Jan 1994 to 30 Sept 2016. The model output provided are daily averages of the following variables: Two-dimensional variables: Sea surface height (zeta), barotropic cross-grid velocity (u) and barotropic along-grid velocity (v) Three-dimensional variables: Temperature (temp), salinity (salt), cross-grid velocity (u), along-grid velocity (v) and vertical velocity (w)
A high-resolution reanalysis of the East Australian Current System assimilating an unprecedented observational data set using 4D-Var data assimilation over a two-year period (2012-2013). Version 2017.
Dataset
For the EAC region, we combine a high-resolution state-of-the-art numerical ocean model with a variety of traditional and newly available observations using an advanced variational data assimilation scheme. The numerical model is configured using the Regional Ocean Modelling System (ROMS 3.4) and takes boundary forcing from the BlueLink ReANalysis (BRAN3). For the data assimilation, we use an Incremental Strong- Constraint 4-Dimensional Variational (IS4D-Var) scheme, which uses the model dynamics to perturb the initial conditions, atmospheric forcing, and boundary conditions, such that the modelled ocean state better fits and is in balance with the observations. In addition to the traditional data streams (satellite derived SSH and SST, Argo profiling floats and XBT lines) we exploit newly available observations collected by Australia's Integrated Marine Observing System (IMOS). These include velocity and hydrographic observations from a deep-water mooring array (the EAC transport array, 27.5S) and several moorings on the continental shelf (27.5S, 30S and 34S), surface radial velocities from a high-frequency (HF) radar array (at Coffs Harbour, 30S), and temperature and salinity observations from ocean gliders.
Related publication(s)
doi.org/10.5194/gmd-9-3779-2016
Related grant(s)
Advancing dynamical understanding in the East Australian Current: Optimising the ocean observation and prediction effort. - AUSTRALIAN RESEARCH COUNCIL-DISCOVERY PROJECT - DISCOVERY PROJECT - DP140102337
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