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Patricio-Valerio, Larissa, Schroeder, Thomas, Devlin, Michelle J. 
ORCID: https://orcid.org/0000-0003-2194-2534, Qin, Yi and Smithers, Scott
(2023)
Meteorological Satellite Observations Reveal Diurnal Exceedance of Water Quality Guideline Thresholds in the Coastal Great Barrier Reef.
Remote Sensing, 15 (9).
ISSN 2072-4292
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Abstract
The Great Barrier Reef (GBR) is a marine protected area subject to natural and anthropogenic disturbances. Water quality is critical for the health and protecting resilience of GBR coral ecosystems against the synergistic and cumulative pressures of tropical cyclones, marine heat waves, and outbreaks of crown-of-thorns starfish. The concentration of Total Suspended Solids (TSS) is a key water quality parameter measured at multiple spatio-temporal scales from in situ probes to satellite observations. High TSS concentrations can adversely impact coral and seagrasses on the inshore GBR. We present diurnal TSS derived from Himawari-8 Geostationary satellite observations at 10 min frequency and demonstrate its applicability for improved monitoring of GBR water quality. Diurnal TSS obtained from Himawari-8 observations were compared to TSS computed from in situ bio-optical measurements at the Lucinda Jetty Coastal Observatory (LJCO). The coastal waters at LJCO experience diurnal variability of TSS (~7 mg L−1), where magnitude peaks followed the slack tides, and the largest diurnal changes were associated with freshwater discharge residuals from the wet season. Exceedance maps revealed that TSS is above guideline thresholds in the open coastal and mid-shelf waters for ~60% of the valid monthly observations, including during dry season months.
| Item Type: | Article |
|---|---|
| Additional Information: | Data Availability Statement: The data presented in this study are available on request from the corresponding author. |
| Uncontrolled Keywords: | backscattering,bio-optics,diurnal ocean colour,great barrier reef,himawari-8,total suspended solids,water quality,general earth and planetary sciences,sdg 14 - life below water,sdg 15 - life on land ,/dk/atira/pure/subjectarea/asjc/1900/1900 |
| Faculty \ School: | Faculty of Science > School of Environmental Sciences |
| UEA Research Groups: | Faculty of Science > Research Groups > Collaborative Centre for Sustainable Use of the Seas |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 18 Jun 2026 10:21 |
| Last Modified: | 21 Jun 2026 23:04 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/103428 |
| DOI: | 10.3390/rs15092335 |
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