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Instrument: Winkler Oxygen Titrator

Acronym: Winkler Titrator

External Identifier: skos:broadMatch: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/

Description

A Winkler Oxygen Titration system is used for determining concentration of dissolved oxygen in seawater.

Datasets (10)

Dataset Name	PI-Supplied Description	PI-Supplied Name
Biogeochemical data collected during the Flower Garden Banks Rapid Response Cruise, FGB-RR16, on R/V Manta in the Flower Garden Banks National Marine Sanctuary from July to August 2016		Winkler titration
P17N Ocean Acidification Pteropod Study: Carbonate chemistry system and hydrography samples from R/V New Horizon NH1208 from a transect 35-50 degrees North, Pacific Ocean, Aug-Sep 2012 (OAPS project)	Automated dissolved oxygen titrator developed at Woods Hole Oceanographic Institution [Knapp et al. 1990]
Discrete sample measurements of dissolved oxygen, dissolved inorganic carbon, and total alkalinity from US Overturning in the Subpolar North Atlantic Program (OSNAP) cruises in 2020 and 2022 (AR45 and AR69-03)	Custom-built Winkler dissolved oxygen titrator: Documentation and code developed and used for oxygen titrations (Nicholson et al., 2023: https://doi.org/10.5281/zenodo.8048208)	Custom-built Winkler dissolved oxygen titrator
Supplementary discrete sample measurements of dissolved oxygen, dissolved inorganic carbon, and total alkalinity from Ocean Observatories Initiative (OOI) cruises to the Irminger Sea Array 2018-2019	Custom-built Winkler dissolved oxygen titrator: Documentation and code developed and used for oxygen titrations for this project (Nicholson et al., 2023: https://doi.org/10.5281/zenodo.8048208)	Custom-built Winkler dissolved oxygen titrator
DIC, TA, pH from R/V Pelican cruise conducted in the northern Gulf of Mexico in April and July 2017	Used for DO_spec analysis
Hydrographic, nutrient and oxygen data from CTD bottles and beam transmission and fluorescence data from CTD profiles during R/V Point Sur PS1809 (HRR legs 1, 2, 3) at the Gulf Mexico, Louisiana and Texas coast, Sept-Oct 2017	Used to measure dissolved oxygen concentrations.	Winkler oxygen titrator (Langdon Enterprises, Miami)
Southern Ocean nutrients from CTD bottles from ARSV Laurence M. Gould LMG0104, LMG0106, LMG0203, LMG0205 in the Southern Ocean from 2001-2002 (SOGLOBEC project)
Gross and integrated gross oxygen productivity from R/V Atlantis II cruise AII-119-4 in the North Atlantic in 1989 (U.S. JGOFS NABE project)		Winkler Oxygen Titrator
Discrete sample measurements of dissolved oxygen, dissolved inorganic carbon, and total alkalinity from the Seven Mile Island Innovation Laboratory (SMIIL) from 2022 to 2024	All samples were titrated within one week of collection at the Boston College Marine Biogeochemistry Lab using a custom-built Winkler titrator with automated potentiometric end point detection (control software available here: Nicholson et al., 2023).	Custom-built Winkler dissolved oxygen titrator
Time series observations: hydrography, nutrients, and microbial, phytoplankton and zooplankton communities from the Skidaway River Estuary on the southeastern Atlantic coast of Georgia from 1986-2011 (SRiMP project)	The oxygen probe measurements are regularly (at least monthly) compared and calibrated (if necessary) against the high-precision Winkler titrations using a (Parsons et al., 1984; Hansen, 1999) and a Brinkmann Metrohm titrator	Winkler Oxygen Titrator