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Using Himawari-8 geostationary satellite data for the investigation of highly dynamic oceanographic phenomena

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Created 20/01/2025

Updated 20/01/2025

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Himawari-8, a geostationary satellite operated by the Japan Meteorological Agency, became operational in July 2015. The high frequency (10 min) and resolution (~2km) of Himawari-8 data provides an enormous opportunity for the monitoring and investigation of highly dynamic oceanographic phenomena. This presentation aims to demonstrate the value of himawari-8 SST data for studies of the Bonney Coast upwelling, East Australian Current (EAC) and Madden-Julian Oscillation (MJO) diurnal SST (dSST) variations. During the 2016–17 summer, we identified three distinct upwelling events along the Bonney Coast. Each event surpassed its predecessor in terms of area of influence, minimum temperature and duration. All of the three events developed quickly, with a 5-fold increase of spatial extent within the first 48 hours. The EAC’s areal extent mapped between July 2015 and Sept 2017 showed clear seasonal and intra-seasonal variations. During summer, the EAC and its extension frequently encroached into the coastal areas of northern NSW and eastern Tasmania. The encroachment to the coastal area of southern NSW was more sporadic. A composite analysis based on MJO phases during the summer seasons of 2015–16 and 2016–17 showed that the dSST typically peaked during phases 2 and 3 off the northwest shelf, prior to the onset of the active phases of MJO (phase 4). The analysis indicated that dSST is negatively correlated with the surface wind speed but positively correlated with short-wave latent heat flux. In future, these monitoring and analytical capabilities can be effectively implemented in Geoscience Australia’s Digital Earth Australia platform. Presented at the 2018 Australian Coastal and Oceans Modelling and Observations Workshop (ACOMO)

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Title Using Himawari-8 geostationary satellite data for the investigation of highly dynamic oceanographic phenomena
Language English
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/b534e4ee-c54c-42d0-9004-8331c3092d72
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 11/05/2018 - 11/05/2018
Geospatial Coverage {"type": "Polygon", "coordinates": [[[112.0, -44.0], [154.0, -44.0], [154.0, -9.0], [112.0, -9.0], [112.0, -44.0]]]}
Data Portal data.gov.au

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This dataset was originally found on data.gov.au "Using Himawari-8 geostationary satellite data for the investigation of highly dynamic oceanographic phenomena". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/using-himawari-8-geostationary-satellite-data-for-the-investigation-of-highly-dynamic-oceanogra

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