eReefs GBR1 Diuron Dispersal: Great Barrier Reef Pesticide Model, 2016-2018

The eReefs GBR1 Diuron Dispersal dataset contains model outputs quantifying the load and dispersal of the pesticide diuron in the Great Barrier Reef marine environment. The data was generated by the Australian Ocean Data Network using a 1 km resolution eReefs marine model (GBR1) nested inside a 4 km model, simulating the period from January 2016 to July 2018. The model incorporates freshwater input from 16 rivers and uses hydrodynamic forcing to calculate hourly diuron concentrations in each model cell.

Use Cases

• Modeling pesticide fate and transport in marine waters based on simulated hydrodynamics and riverine inputs.
• Assessing compliance with water quality guidelines for diuron based on simulated concentration distributions.
• Studying river plume dynamics and freshwater-seawater mixing based on conservative tracer simulations.
• Calibrating and validating marine dispersal models using comparisons with observations from 11 monitoring sites.

Strengths

• Model outputs are at a high 1 km spatial resolution, nested within a 4 km model for boundary stability.
• Simulation covers a specific 2.5-year period from January 2016 to July 2018.
• Model validation includes comparison with observations at 11 monitoring sites and uses a determined diuron half-life of 40 days.
• Represents freshwater input from 16 specific rivers in the Great Barrier Reef region.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.
• Data may reflect geographic and temporal bias inherent to the specific model setup and simulation period.

Provenance

Source

Australian Ocean Data Network via data_gov_au.

Collection Method

Output from the eReefs GBR1 marine model, which used the GBR-Dynamic SedNet catchment model for loads and a hydrodynamic transport model for dispersal.

Time Range

January 2016 to July 2018

Freshness

Last updated 2026-06-23 00:46:06.155530; freshness should be verified.

Geography

Great Barrier Reef marine environment