Data

IMOS - AusTemp - Degree Heating Days product

Integrated Marine Observing System
Integrated Marine Observing System (IMOS)
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/e1f2476a-b801-4a1f-9fbe-727b4f76f726&rft.title=IMOS - AusTemp - Degree Heating Days product&rft.identifier=https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/e1f2476a-b801-4a1f-9fbe-727b4f76f726&rft.description=This dataset contains the summer Degree Heating Days (DHD) from the 1st of December to the 30th of April since 2012, which is calculated by accumulating the daily positive Sea Surface Temperature anomalies (SSTa). The SSTa is calculated by comparing the current SST to long-term averages (1993-2003, the “CSIRO Legacy climatology” or 2002-2011, the “IMOS climatology”). The magnitude of the DHD correlates well with past coral bleaching events. In cases where SST cannot be calculated due to cloud cover, the grid cell is left blank (white in web plots, transparent in Google Earth) to indicate missing data.The ReefTemp Next Generation (RTNG) system was implemented and declared operational in the Bureau National Operations Centre (BNOC, formerly National Meteorological and Oceanographic Centre) on 22 October 2013. The system is based on a new state-of-the-art Integrated Marine Observing System (IMOS) 1-day L3S night-only Sea Surface Temperature (SST) product, which produces high-resolution satellite-based nowcasts of SST, thermal stress and associated coral bleaching risk over the Great Barrier Reef.This product follows on from the decommissioned ReefTemp Next Generation a high resolution mapping product that provided information on coral bleaching risk for the Great Barrier Reef region. The ReefTemp Next Generation system was developed by the Bureau of Meteorology for eReefs, under the National Plan for Environmental Information (NPEI) initiative. A research Version 1 (V1) system, available from 2007, was the result of a collaborative project between the Bureau of Meteorology, CSIRO Marine and Atmospheric Research and the Great Barrier Reef Marine Park Authority.Maintenance and Update Frequency: dailyStatement: See Technical description for details on the product generation&rft.creator=Integrated Marine Observing System (IMOS) &rft.date=2025&rft.coverage=westlimit=110.01; southlimit=-45.99; eastlimit=163.69; northlimit=-8.21&rft.coverage=westlimit=110.01; southlimit=-45.99; eastlimit=163.69; northlimit=-8.21&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/&rft_rights=The citation in a list of references is: IMOS [year-of-data-download], [Title], [data-access-URL], accessed [date-of-access].&rft_rights=Any users of IMOS data are required to clearly acknowledge the source of the material derived from IMOS in the format: Data was sourced from Australia’s Integrated Marine Observing System (IMOS) – IMOS is enabled by the National Collaborative Research Infrastructure strategy (NCRIS). If relevant, also credit other organisations involved in collection of this particular datastream (as listed in 'credit' in the metadata record).&rft_subject=oceans&rft_subject=Marine Features (Australia) | Great Australian Bight, SA/WA&rft_subject=Marine Features (Australia) | Bass Strait, TAS/VIC&rft_subject=Regional Seas | Tasman Sea&rft_subject=Regional Seas | Coral Sea&rft_subject=Global / Oceans | Indian Ocean&rft_subject=Regional Seas | Timor Sea&rft_subject=Global / Oceans | Pacific Ocean&rft_subject=Regional Seas | Arafura Sea&rft_subject=Regional Seas | Solomon Sea&rft_subject=Global / Oceans | Southern Ocean&rft_subject=States, Territories (Australia) | New South Wales&rft_subject=Countries | New Caledonia&rft_subject=Countries | Timor-Leste&rft_subject=States, Territories (Australia) | Victoria&rft_subject=States, Territories (Australia) | Tasmania&rft_subject=Countries | Australia&rft_subject=Countries | Papua New Guinea&rft_subject=Countries | Indonesia&rft_subject=States, Territories (Australia) | Western Australia&rft_subject=States, Territories (Australia) | South Australia&rft_subject=States, Territories (Australia) | Northern Territory&rft_subject=States, Territories (Australia) | Queensland&rft_subject=orbiting satellite&rft_subject=radiometers&rft_subject=HEATING DEGREE DAYS&rft_subject=SEA SURFACE TEMPERATURE&rft.type=dataset&rft.language=English Access the data
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Licence & Rights:

Open Licence view details
CC-BY

Creative Commons Attribution 4.0 International License
http://creativecommons.org/licenses/by/4.0/

The citation in a list of references is: "IMOS [year-of-data-download], [Title], [data-access-URL], accessed [date-of-access]."

Any users of IMOS data are required to clearly acknowledge the source of the material derived from IMOS in the format: "Data was sourced from Australia’s Integrated Marine Observing System (IMOS) – IMOS is enabled by the National Collaborative Research Infrastructure strategy (NCRIS)." If relevant, also credit other organisations involved in collection of this particular datastream (as listed in 'credit' in the metadata record).

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Full description

This dataset contains the summer Degree Heating Days (DHD) from the 1st of December to the 30th of April since 2012, which is calculated by accumulating the daily positive Sea Surface Temperature anomalies (SSTa). The SSTa is calculated by comparing the current SST to long-term averages (1993-2003, the “CSIRO Legacy climatology” or 2002-2011, the “IMOS climatology”). The magnitude of the DHD correlates well with past coral bleaching events. In cases where SST cannot be calculated due to cloud cover, the grid cell is left blank (white in web plots, transparent in Google Earth) to indicate missing data.

The ReefTemp Next Generation (RTNG) system was implemented and declared operational in the Bureau National Operations Centre (BNOC, formerly National Meteorological and Oceanographic Centre) on 22 October 2013. The system is based on a new state-of-the-art Integrated Marine Observing System (IMOS) 1-day L3S night-only Sea Surface Temperature (SST) product, which produces high-resolution satellite-based nowcasts of SST, thermal stress and associated coral bleaching risk over the Great Barrier Reef.

This product follows on from the decommissioned ReefTemp Next Generation a high resolution mapping product that provided information on coral bleaching risk for the Great Barrier Reef region. The ReefTemp Next Generation system was developed by the Bureau of Meteorology for eReefs, under the National Plan for Environmental Information (NPEI) initiative. A research Version 1 (V1) system, available from 2007, was the result of a collaborative project between the Bureau of Meteorology, CSIRO Marine and Atmospheric Research and the Great Barrier Reef Marine Park Authority.

Lineage

Maintenance and Update Frequency: daily
Statement: See Technical description for details on the product generation

Notes

Credit
Australia’s Integrated Marine Observing System (IMOS) is enabled by the National Collaborative Research Infrastructure Strategy (NCRIS). It is operated by a consortium of institutions as an unincorporated joint venture, with the University of Tasmania as Lead Agent.
Credit
Bureau of Meteorology (BOM)

Created: 03 02 2025

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163.69,-8.21 163.69,-45.99 110.01,-45.99 110.01,-8.21 163.69,-8.21

136.85,-27.1

text: westlimit=110.01; southlimit=-45.99; eastlimit=163.69; northlimit=-8.21

Subjects
Countries | Australia | Countries | Indonesia | Countries | New Caledonia | Countries | Papua New Guinea | Countries | Timor-Leste | Global / Oceans | Indian Ocean | Global / Oceans | Pacific Ocean | Global / Oceans | Southern Ocean | HEATING DEGREE DAYS | Marine Features (Australia) | Bass Strait, TAS/VIC | Marine Features (Australia) | Great Australian Bight, SA/WA | Regional Seas | Arafura Sea | Regional Seas | Coral Sea | Regional Seas | Solomon Sea | Regional Seas | Tasman Sea | Regional Seas | Timor Sea | SEA SURFACE TEMPERATURE | States, Territories (Australia) | New South Wales | States, Territories (Australia) | Northern Territory | States, Territories (Australia) | Queensland | States, Territories (Australia) | South Australia | States, Territories (Australia) | Tasmania | States, Territories (Australia) | Victoria | States, Territories (Australia) | Western Australia | oceans | orbiting satellite | radiometers |

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Other Information
(IMOS website)

uri : https://imos.org.au

(NetCDF files via THREDDS catalog)

uri : https://thredds.aodn.org.au/thredds/catalog/IMOS/SRS/AusTemp/dhd/catalog.html

(Technical description of product)

uri : https://content.aodn.org.au/Documents/IMOS/Data_product/AusTemp_v1.pdf

global : c78801d0-bffe-11dc-a463-00188b4c0af8

Identifiers
  • global : e1f2476a-b801-4a1f-9fbe-727b4f76f726