Great Barrier Reef Biogeochemistry Model Under Reduced Catchment Loads

Comprising results from version 3.1 of the 4km-resolution biogeochemistry and sediments model (GBR4) for the Great Barrier Reef, forced by a hydrodynamic model and a reduced-loads catchment scenario. The simulation, named GBR4_H2p0_B3p1_Cq3R_Dhnd, was run in hindcast-mode as part of a suite comparing baseline and pre-industrial scenarios. It models the impact of reduced anthropogenic loads of DIN, PN, PP, and TSS as specified in the Reef 2050 Water Quality Improvement Plan.

Use Cases

• Analyze the spatial distribution of DIN (Dissolved Inorganic Nitrogen) concentrations under the reduced-loads scenario to assess water quality improvements.
• Model sediment transport and TSS (Total Suspended Solids) dynamics at 4km resolution to evaluate changes in light availability for coral reefs.
• Compare biogeochemical outputs (e.g., PN, PP) between the reduced-loads, baseline, and pre-industrial catchment scenarios to quantify anthropogenic impact.
• Use the hindcast-mode time series data to validate the model's simulation of water quality parameters against historical observations.

Strengths

• Model outputs are based on a 4km-resolution grid, providing detailed spatial analysis for the Great Barrier Reef region.
• The dataset is part of a controlled suite of simulations, enabling direct comparison between reduced-loads, baseline, and pre-industrial catchment scenarios.
• Results are derived from a named and documented model configuration (GBR4_H2p0_B3p1_Cq3R_Dhnd) following the eReefs simulation protocol.

Limitations

• The dataset consists of model outputs (PNG, HTML, WMS, PDF) rather than raw tabular data, limiting direct statistical or machine learning applications.
• Specific temporal coverage, row counts, and columnar data structures are not provided in the input, hindering precise data volume assessment.
• The license is listed as 'notspecified', which may create uncertainty for downstream usage and redistribution.

Provenance

Source

CSIRO Marlin Data Catalogue

Collection Method

Outputs from version 3.1 of the eReefs 4km-resolution biogeochemistry and sediments model (GBR4), forced by hydrodynamic model v2 and a specific catchment scenario.

Time Range

Hindcast-mode simulation; specific date range not provided.

Freshness

The dataset metadata was last updated on 2026-03-20.

Geography

Great Barrier Reef, Australia.