eReefs GBR1 Diuron Dispersal: Great Barrier Reef Pesticide Modelling

A marine model simulation quantifies the dispersal of the pesticide diuron in the Great Barrier Reef from January 2016 to July 2018. The model from the Australian Ocean Data Network uses a 1 km resolution grid nested inside a 4 km model, forced by hydrodynamics from wind, tides, and waves. It incorporates freshwater input from 16 rivers and simulates diuron loads from agricultural and urban runoff.

Use Cases

• Modeling pesticide transport in coastal waters based on hydrodynamic fluxes described in the model.
• Assessing water quality guideline exceedances based on simulated diuron concentrations.
• Analyzing river plume dynamics based on the use of conservative tracers for 16 individual rivers.
• Studying the environmental half-life of pollutants based on the determined 40-day diuron decay.

Strengths

• Simulation covers a specific period from January 2016 to July 2018.
• Model uses high-resolution 1 km grid nested inside a 4 km model for boundary forcing.
• Incorporates hydrodynamic data from multiple sources including wind, tides, and waves.
• Quantifies diuron loads from 16 individual river catchments.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to data_gov_au, focusing solely on the Great Barrier Reef.

Provenance

Source

Australian Ocean Data Network

Collection Method

Modelled using the eReefs GBR1 marine model nested inside the GBR4 model, forced by catchment outputs from the GBR-Dynamic SedNet model.

Time Range

January 2016 to July 2018

Freshness

Last updated 2026-06-27 20:58:45.728132; freshness should be verified.

Geography

Great Barrier Reef marine environment