Citation:

PANGAEA.988203 (dataset in review)

Name: High-resolution, in-situ coral reef water temperatures at Dongsha Atoll: 25 m, 2017-2023
Creator: Alex S J Wyatt
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Climate change; Coral Reef; Dongsha Atoll; high-frequency monitoring; internal waves; marine heatwaves (MHWs); reef slope; South China Sea; thermal refuge; Time series; Upwelling; Water temperature

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Abstract:

This dataset contains high-frequency water temperature measurements collected on the outer reef slope (25 m) of Dongsha Atoll in the northern South China Sea. Temperature was recorded using Sea-Bird SBE56 thermistors mounted at fixed depths of 25 m. The instrument sampled at 1-minute intervals between 23 May 2017 and 27 October 2023, providing near continuous multi-year coverage of subsurface thermal conditions on a tropical coral reef. The measurements were collected to quantify fine-scale temporal variability in the reef-slope thermal environment, including diel to seasonal fluctuations, and to support research on physical processes influencing temperature dynamics on coral reef ecosystems. Data were obtained through autonomous in situ logging as part of a long-term observational programme aimed at characterising the thermal regimes of reefs influenced by oceanographic variability.

Keyword(s):

Climate change; Coral Reef; Dongsha Atoll; high-frequency monitoring; internal waves; marine heatwaves (MHWs); reef slope; South China Sea; thermal refuge; Time series; Upwelling; Water temperature

Related to:

Wyatt, Alex S J; et al. (in review): Coral reef-level upwelling in an internal wave hotspot driven by mesoscale dynamics.

Funding:

Research Grants Council, University Grants Committee (RGC, UGC), grant/award no. 26100120

Research Grants Council, University Grants Committee (RGC, UGC), grant/award no. AoE/P-601/23-N

Coverage:

Latitude: 20.678110 * Longitude: 116.926250

Date/Time Start: 2017-05-23T13:44:00 * Date/Time End: 2023-10-27T10:49:00

Minimum DEPTH, water: 25 m * Maximum DEPTH, water: 25 m

Event(s):

Dongsha_Atoll_Temp_OE1_25m * Latitude: 20.678110 * Longitude: 116.926250 * Date/Time Start: 2017-05-23T00:00:00 * Date/Time End: 2023-10-27T00:00:00 * Elevation: -25.0 m

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DATE/TIME	Date/Time		Wyatt, Alex S J		Geocode
2	DEPTH, water	Depth water	m	Wyatt, Alex S J		Geocode
3	Temperature, water	Temp	°C	Wyatt, Alex S J	Temperature sensor, Sea-Bird, SBE 56

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

3379413 data points

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