Uncertainty evaluation of CTD measurements: a metrological approach to water-column coastal parameters in the Gulf of La Spezia area

G. Raiteri, A. Bordone, T. Ciuffardi, F. Pennecchi

Abstract

The ENEA Marine Environment Research Centre S. Teresa has been involved since the ‘70s in monitoring, analysis and comprehension of physical, chemical and biological processes in marine environment. The purpose of this work is to describe the recently-implemented metrological approach aimed to evaluate the uncertainty associated with measurement results obtained by a Conductivity-Temperature-Depth profiler (CTD), deployed during routine coastal campaigns in the Eastern Ligurian Sea, close to the Gulf of La Spezia area. Main effort of this work is focused on applying the standard framework necessary to correctly assess the measurement uncertainty for each involved parameter. To this aim, an appropriate uncertainty evaluation is performed by combining type A and B contributions, evaluated from experimental data measured in reproducibility conditions and from calibration certificates periodically supplied by manufacturer, respectively.

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IMEKO TC

TC19 - Environmental Measurements

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