ReefTEMPS, Network of coastal oceanic sensors, Open access data portal

ReefTEMPS is a network of coastal oceanic sensors in the Pacific islands. These sensors record seven physical parameters, including temperature, pressure and salinity [1]. It is part of the French national research infrastructure for coastal ocean and nearshore observations named ILICO [2]. Since 2020, it is labeled as a French National Observation Service (SNO). Some of the network’s sensors have been deployed for over 40 years. Nearly hundred sensors are actually deployed in 14 countries covering an area of more than 8000 km from East to West. The data are acquired at different rates (from 1sec to 30 mn) depending on sensors and sites. They are processed and described using Climate and Forecast Metadata Convention [3] at the end of oceanographic campaigns organized for sensors replacement every 6 months to 2 years. The data are then stored into a historical database named DBOceano.
In 2011, we designed an information system [4] whose objectives correspond to the FAIR principles [5] : 1/ open and normalized data available under several standards, including the OGC-SOS, in order to make them accessible to many scientific communities, 2/ an information system based on Open Source applications and 3/ metadata sharing in recognized and sustainable online catalogues delivering DOIs. 
The use of the OGC-SOS standard [6], by then in its version 1.0, seemed relevant to us. It was its first implementation in France in the field of earth observing systems. Concerns about the permissibility of the SOS standard and the latency of calls to SOAP services (XML based) led us to switch to the SensorThing API [7] in its early production hours in 2016. 
We therefore provide metadata in accordance with the standards: iso19115 Marine Community Profile [8] (provided by AODN), SensorML and iso19115 on the SEANOE catalogue and data in the formats: SOS, WMS [9], WFS [10], OpeNDAP [11], and raw (CSV and image).
The new version is in production since June 2017: www.reeftemps.science. Since then, all our web services have been available through our internet portal, which allows time series to be searched by platform and by physical parameter. All acquired data are publicly accessible under the Creative commons license Attribution-ShareAlike 4.0. 

1. ReefTEMPS : the observation network of the coastal sea waters of the South, West and South-West Pacific. Available at: https://www.seanoe.org/data/00440/55128/.
2. Cocquempot L, Delacourt C, Paillet J, Riou P, Aucan J, Castelle B, Charria G, Claudet J, Conan P, Coppola L, Hocdé R, Planes S, Raimbault P, Savoye N, Testut L and Vuillemin R (2019) Coastal Ocean and Nearshore Observation: A French Case Study. Front. Mar. Sci. 6:324. doi: 10.3389/fmars.2019.00324
3. Gregory, Jonathan (2003). "The CF metadata standard".
4. Hocde, R. & Fiat, S. Le système d’information du « réseau de capteurs de température des eaux côtières dans la région du Pacifique Sud et Sud-Ouest ». Netcom Réseaux Commun. Territ. 170–173 (2013). doi:10.4000/netcom.1294
5. The FAIR Guiding Principles for scientific data management and stewardship | Scientific Data. Available at: https://www.nature.com/articles/sdata201618.
6. OGC Sensor Observation Service (SOS) Standard Version 2.0 Adopted | OGC. Available at: http://www.opengeospatial.org/node/1601.
7. OGC SensorThings API | OGC. Available at: http://www.opengeospatial.org/standards/sensorthings.
8. Proctor, R., Roberts, K. & Ward, B. J. A data delivery system for IMOS, the Australian Integrated Marine Observing System. Adv. Geosci. 28, 11–16 (2010).
9. Web Map Service | OGC. Available at: https://www.opengeospatial.org/standards/wms. 
10. Web Feature Service | OGC. Available at: https://www.opengeospatial.org/standards/wfs. 
11. Hankin, S. C. et al. NetCDF-CF-OPeNDAP: Standards for ocean data interoperability and object lessons for community data standards processes. 2, (2010).

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