eReefs AIMS-CSIRO Statistics of hydrodynamic model outputs

This generated data set contains basic statistical products derived from the eReefs CSIRO hydrodynamic model v2.0 (https://research.csiro.au/ereefs) outputs at both 1km and 4km resolution, generated by the AIMS eReefs Platform (https://ereefs.aims.gov.au/ereefs-aims). These statistical products are derived from the original hourly model outputs available via the National Computing Infrastructure (NCI) (https://dapds00.nci.org.au/thredds/catalogs/fx3/catalog.html), and have been re-gridded from the original curvilinear grid used by the eReefs model into a regular grid so that the data files can be easily loaded into standard GIS software. These products are made available via a THREDDS server (https://thredds.ereefs.aims.gov.au/thredds/) in NetCDF format. For more information about the eReefs hydrodynamic modelling see https://research.csiro.au/ereefs/models/models-about/models-hydrodynamics/.

This data set contains two (2) products, based on the periods over which the statistics are determined: daily, and monthly.

* DAILY STATISTICS

Method:

This product is calculated from the original hourly model outputs, using the statistical calculation in question.
- MEAN is calculated by summing all values for a grid cell for the given day, and dividing by the number of summed values.
- MINIMUM is the minimum value of the grid cell for the given day.
- MAXIMUM is the maximum value of the grid cell for the given day.
- RANGE is the different between the maximum and minimum values of the grid cell for the given day.

Data Dictionary:

The following variables can be found in the Daily statistics product:

- temp_mean: mean temperature for each grid cell for the day.
- temp_min: minimum temperature for each grid cell for the day.
- temp_max: maximum temperature for each grid cell for the day.
- temp_range: difference between maximum and minimum temperatures for each grid cell for the day.

- eta_mean: mean surface elevation for each grid cell for the day.
- eta_min: minimum surface elevation for each grid cell for the day.
- eta_max: maximum surface elevation for each grid cell for the day.
- eta_range: difference between maximum and minimum surface elevation for each grid cell for the day.

Depths:

Depths at 1km resolution: -2.35m, -5.35m, -18.0m, -49.0m

Depths are 4km resolution: -1.5m, -5.55m, -17.75m, -49.0m

* MONTHLY STATISTICS

Method:

This product is calculated from the DAILY STATISTICS as described in the Data Dictionary section.

Data Dictionary:

The following variables can be found in the Monthly statistics product:

- temp_min_min: the minimum value of the "temp_min" variable from the Daily statistics product. This equates to the minimum temperature for each grid cell for the corresponding month.
- temp_min_mean: the mean value of the "temp_min" variable from the Daily statistics product. This equates to the mean minimum temperature for each grid cell for the corresponding month.
- temp_max_max: the maximum value of the "temp_max" variable from the Daily statistics product. This equates to the maximum temperature for each grid cell for the corresponding month.
- temp_max_mean: the mean value of the "temp_max" variable from the Daily statistics product. This equates to the mean maximum temperature for each grid cell for the corresponding month.
- temp_mean: the mean value of the "temp_mean" variable from the Daily statistics product. This equates to the mean temperature for each grid cell for the corresponding month.
- temp_range_mean: the mean value of the "temp_range" variable from the Daily statistics product. This equates to the mean range of temperatures for each grid cell for the corresponding month.
- eta_min_min: the minimum value of the "eta_min" variable from the Daily statistics product. This equates to the minimum surface elevation for each grid cell for the corresponding month.
- eta_min_mean: the mean value of the "eta_min" variable from the Daily statistics product. This equates to the mean minimum surface elevation for each grid cell for the corresponding month.
- eta_max_max: the maximum value of the "eta_max" variable from the Daily statistics product. This equates to the maximum surface elevation for each grid cell for the corresponding month.
- eta_max_mean: the mean value of the "eta_max" variable from the Daily statistics product. This equates to the mean maximum surface elevation for each grid cell for the corresponding month.
- eta_mean: the mean value of the "eta_mean" variable from the Daily statistics product. This equates to the mean surface elevation for each grid cell for the corresponding month.
- eta_range_mean: the mean value of the "eta_range" variable from the Daily statistics product. This equates to the mean range of surface elevations for each grid cell for the corresponding month.

Depths:

Depths at 1km resolution: -2.35m, -5.35m, -18.0m, -49.0m

Depths are 4km resolution: -1.5m, -5.55m, -17.75m, -49.0m

Limitations:

This dataset is based on a spatial and temporal model and as such is an estimate of the environmental conditions. It is not based on in-water measurements, and thus will have a spatially varying level of error in the modelled values. It is important to consider if the model results are fit for the intended purpose.