FN Archimer Export Format PT J TI Toward a Harmonization for Using in situ Nutrient Sensors in the Marine Environment BT AF Daniel, Anne LAES-HUON, Agathe Barus, Carole Beaton, Alexander D. Blandfort, Daniel Guigues, Nathalie Knockaert, Marc MUNARON, Dominique Salter, Ian Woodward, E. Malcolm S. Greenwood, Naomi Achterberg, Eric P. AS 1:1;2:2;3:3;4:4;5:5;6:6;7:7;8:8;9:9,10;10:11;11:12;12:13; FF 1:PDG-ODE-DYNECO-PELAGOS;2:PDG-REM-RDT-LDCM;3:;4:;5:;6:;7:;8:PDG-ODE-LITTORAL-LERLR;9:;10:;11:;12:; C1 Laboratoire Ecologie Pélagique, Unité Dynamiques des Écosystèmes Côtiers, Ifremer, Plouzané, France Laboratoire Détection, Capteurs et Mesures, Unité Recherches et Développements Technologiques, Ifremer, Plouzané, France Laboratoire d’Etudes en Géophysique et Océanographie Spatiales, UMR 5566, CNRS/UPS/CNES/IRD, Toulouse, France Ocean Technology and Engineering Group, National Oceanography Centre, Southampton, United Kingdom Institut für Küstenforschung, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany Pôle Chimie et Biologie, Direction de la Métrologie Scientifique et Industrielle, LNE, Paris, France ECOCHEM, Operationele Directie Natuurlijk Milieu, Ostend, Belgium MARBEC, Ifremer, Sète, France Faroe Marine Research Institute, Tórshavn, Faroe Islands Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Bremerhaven, Germany Plymouth Marine Laboratory, Plymouth, United Kingdom Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, United Kingdom GEOMAR, Helmholtz Centre for Ocean Research, Kiel, Germany C2 IFREMER, FRANCE IFREMER, FRANCE CNRS, FRANCE NOC, UK HZG, GERMANY DMSI, FRANCE ECOCHEM, BELGIUM IFREMER, FRANCE FAMRI, FAROE ISLANDS INST A WEGENER, GERMANY PML, UK CEFAS, UK IFM GEOMAR, GERMANY SI BREST SETE SE PDG-ODE-DYNECO-PELAGOS PDG-REM-RDT-LDCM PDG-ODE-LITTORAL-LERLR UM MARBEC IN WOS Ifremer UPR WOS Ifremer UMR DOAJ copubli-france copubli-europe copubli-int-hors-europe IF 5.247 TC 20 UR https://archimer.ifremer.fr/doc/00603/71521/69942.pdf LA English DT Article DE ;nutrient;EOVs;in situ sensor;data comparability;marine biogeochemistry;ocean observing systems AB Improved comparability of nutrient concentrations in seawater is required to enhance the quality and utility of measurements reported to global databases. Significant progress has been made over recent decades in improving the analysis and data quality for traditional laboratory measurements of nutrients. Similar efforts are required to establish high-quality data outputs from in situ nutrient sensors, which are rapidly becoming integral components of ocean observing systems. This paper suggests using the good practices routine established for laboratory reference methods to propose a harmonized set of deployment protocols and of quality control procedures for nutrient measurements obtained from in situ sensors. These procedures are intended to establish a framework to standardize the technical and analytical controls carried out on the three main types of in situ nutrient sensors currently available (wet chemical analyzers, ultraviolet optical sensors, electrochemical sensors) for their deployments on all kinds of platform. The routine reference controls that can be applied to the sensors are listed for each step of sensor use: initial qualification under controlled conditions in the laboratory, preparation of the sensor before deployment, field deployment and finally the sensor recovery. The fundamental principles applied to the laboratory reference method are then reviewed in terms of the calibration protocol, instrumental interferences, environmental interferences, external controls, and method performance assessment. Data corrections (linearity, sensitivity, drifts, interferences and outliers) are finally identified along with the concepts and calculations for qualification for both real time and time delayed data. This paper emphasizes the necessity of future collaborations between research groups, reference-accredited laboratories, and technology developers, to maintain comparability of the concentrations reported for the various nutrient parameters measured by in situ sensors. PY 2020 PD JAN SO Frontiers In Marine Science SN 2296-7745 PU Frontiers Media SA VL 6 IS 773 UT 000508595900001 DI 10.3389/fmars.2019.00773 ID 71521 ER EF