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Sensors 2016, 16(5), 702; doi:10.3390/s16050702

Methods and Best Practice to Intercompare Dissolved Oxygen Sensors and Fluorometers/Turbidimeters for Oceanographic Applications

1
National Research Council of Italy, Institute of Intelligent Systems for Automation, Genoa 16149, Italy
2
National Research Council of Italy, Institute of Marine Science, Genoa, 16149, Italy
3
Hellenic Centre for Marine Research, Institute of Oceanography, Heraklion Crete, 71003, Greece
*
Author to whom correspondence should be addressed.
Academic Editor: Russell Binions
Received: 1 March 2016 / Revised: 23 April 2016 / Accepted: 6 May 2016 / Published: 17 May 2016
(This article belongs to the Special Issue Sensors for Environmental Monitoring 2016)
View Full-Text   |   Download PDF [7781 KB, uploaded 18 May 2016]   |  

Abstract

In European seas, ocean monitoring strategies in terms of key parameters, space and time scale vary widely for a range of technical and economic reasons. Nonetheless, the growing interest in the ocean interior promotes the investigation of processes such as oxygen consumption, primary productivity and ocean acidity requiring that close attention is paid to the instruments in terms of measurement setup, configuration, calibration, maintenance procedures and quality assessment. To this aim, two separate hardware and software tools were developed in order to test and simultaneously intercompare several oxygen probes and fluorometers/turbidimeters, respectively in the same environmental conditions, with a configuration as close as possible to real in-situ deployment. The chamber designed to perform chlorophyll-a and turbidity tests allowed for the simultaneous acquisition of analogue and digital signals of several sensors at the same time, so it was sufficiently compact to be used in both laboratory and onboard vessels. Methodologies and best practice committed to the intercomparison of dissolved oxygen sensors and fluorometers/turbidimeters have been used, which aid in the promotion of interoperability to access key infrastructures, such as ocean observatories and calibration facilities. Results from laboratory tests as well as field tests in the Mediterranean Sea are presented. View Full-Text
Keywords: dissolved oxygen; fluorescence; turbidity; intercomparison; operational oceanography; marine technology; ocean observing system dissolved oxygen; fluorescence; turbidity; intercomparison; operational oceanography; marine technology; ocean observing system
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Pensieri, S.; Bozzano, R.; Schiano, M.E.; Ntoumas, M.; Potiris, E.; Frangoulis, C.; Podaras, D.; Petihakis, G. Methods and Best Practice to Intercompare Dissolved Oxygen Sensors and Fluorometers/Turbidimeters for Oceanographic Applications. Sensors 2016, 16, 702.

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