Temperature, wind, salinity and current (GBR1)

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    This page shows the temperature, wind, salinity and ocean currents on the Great Barrier Reef based on the 1km eReefs Hydrodynamic model. Click on a month to choose the period of the video or click on the map to zoom in on a region. These map layers are also available for inspection as an interactive map. You can also access the raw data from NCI THREDDS server (hourly) and the aggregate data from the AIMS eAtlas THREDDS server (daily, monthly, yearly, all).

    Why are the maps not up to date?

    The results are updated in near-real-time in that they are updated daily, however sometimes they can be behind real time up to 2 weeks. This happens due to delays in the model runs being held up for technical reasons or delays in source data that drive the model. This visualisation portal can sometimes also delay the products by upto 1 day. To check the latest available model data look at the date on the NCI THREDDS server. If the model data is more up to date than this portal let us know.

    Temperature

    The temperature is primarily driven by the seasons. If the temperature rises too high during summer months then it can cause corals to bleach.

    Wind

    The wind is a key driver of surface water currents, mixing and waves. In summer months when the wind is low the surface temperatures rise significantly during the day, resulting in a "heart-beat" in the temperature in the video. The wind also drives the direction of the flood plumes, typically blowing north west making them hug the coast. When the wind occasionally blows offshore then the plumes are pushed further out.

    Salinity

    Low salinity (dark blue) occurs due to river out flows causing flood plumes and rain events. This is a good proxy for where plume waters might be. During flood plumes if the wind is blowing offshore then it will push the plume off the coast more toward the reefs.

    Current

    The strength of the current is represented by colour. The arrows represent the direction.