| Autor: |
Khan, Urooj, Farmer, Benjamin, Laugesen, Richard, D'Andrea, James, Cornish, Alex, Wells, Steven C., Cole, Steven J., Moore, Robert J. |
| Předmět: |
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| Zdroj: |
EA National Conference Publications; 2023, p573-577, 5p |
| Abstrakt: |
eReefs is a collaborative project among various organisations that aims to protect and preserve the iconic Great Barrier Reef (GBR) and to support the Reef 2050 Plan. The Water Models Team at the Bureau of Meteorology in collaboration with eReefs project partners has developed water quantity (streamflow) and water quality simulation models for the catchments contributing to the GBR. Outputs from these models are used as inputs to marine hydrodynamic and biogeochemical models to assess changes in the marine environment and to provide information for the Annual Reef Report Card. The physical-conceptual distributed hydrological model Grid-to-Grid (G2G) from the UK Centre for Ecology & Hydrology (UKCEH) is used for streamflow modelling across the catchment area draining to the GBR coastline. G2G has been implemented at a spatial and temporal resolution of 0.01° (~1km) and 1 hour over the 426,000 km2 catchment area and is now being expanded to encompass the Cape York region. The performance of the model has been assessed using the Nash-Sutcliffe Efficiency (NSE) measure at gauged locations and found to give reasonably high values for many locations. The water quality models are developed to provide accurate and reliable estimates of sediments, dissolved and particulate nutrients (Nitrogen and Phosphorus) using a multivariate regression method. Covariates used in these regression models were derived from either streamflow, baseflow, or time-based cyclical processes. Their performances vary by site location and constituent. The method has been improved upon using a Bayesian Hierarchical technique to develop models for all gauged and ungauged catchments draining to the GBR coastline. An operational-ready system using Amazon Web Services (AWS) is under development and will provide real-time simulations of streamflow and water quality constituents. The system will be ready by the end of the eReefs Phase 5 project in June 2024. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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