Svinoy transect oxygen and dissolved inorganic carbon

We report on a pilot study using a CO2 optode deployed on a Seaglider in the Norwegian Sea for 8 months (March to October 2014). The optode measurements required drift- and lag-correction, and in situ calibration using discrete water samples collected in the vicinity. We found the optode signal corr...

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Main Author: Possenti, Luca
Format: Dataset
Language:unknown
Published: University of Bergen 2020
Subjects:
Online Access:https://dx.doi.org/10.21335/nmdc-1654657723
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spelling ftdatacite:10.21335/nmdc-1654657723 2023-05-15T17:47:06+02:00 Svinoy transect oxygen and dissolved inorganic carbon Possenti, Luca 2020 https://dx.doi.org/10.21335/nmdc-1654657723 http://metadata.nmdc.no/metadata-api/landingpage/cee3e811e0369a90fd709de3824a8708 unknown University of Bergen Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY dataset Dataset 2020 ftdatacite https://doi.org/10.21335/nmdc-1654657723 2021-11-05T12:55:41Z We report on a pilot study using a CO2 optode deployed on a Seaglider in the Norwegian Sea for 8 months (March to October 2014). The optode measurements required drift- and lag-correction, and in situ calibration using discrete water samples collected in the vicinity. We found the optode signal correlated better with the concentration of CO2, c(CO2), than with its partial pressure, p(CO2). Using the calibrated c(CO2) and a regional parameterisation of total alkalinity (AT) as a function of temperature and salinity, we calculated total dissolved inorganic carbon concentrations, CT, which had a standard deviation of 10 µmol kg-1 compared with direct CT measurements. The glider was also equipped with an oxygen (O2) optode. The O2 optode was drift-corrected and calibrated using a c(O2) climatology for deep samples (R2 = 0.89; RMSE = 0.009 µmol kg-1). The survey area was a source of O2 and a sink of CO2 for most of the summer. The deployment captured two different surface waters: the Norwegian Atlantic Current (NwAC) and the Norwegian Coastal Current (NCC). The NCC was characterised by lower c(O2) and CT than the NwAC, as well as lower N(O2), N(CT) and craw(Chl a). Our results show the potential of glider data to simultaneously capture time and depth-resolved variability in CT and O2. Dataset Norwegian Sea DataCite Metadata Store (German National Library of Science and Technology) Norwegian Sea
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language unknown
description We report on a pilot study using a CO2 optode deployed on a Seaglider in the Norwegian Sea for 8 months (March to October 2014). The optode measurements required drift- and lag-correction, and in situ calibration using discrete water samples collected in the vicinity. We found the optode signal correlated better with the concentration of CO2, c(CO2), than with its partial pressure, p(CO2). Using the calibrated c(CO2) and a regional parameterisation of total alkalinity (AT) as a function of temperature and salinity, we calculated total dissolved inorganic carbon concentrations, CT, which had a standard deviation of 10 µmol kg-1 compared with direct CT measurements. The glider was also equipped with an oxygen (O2) optode. The O2 optode was drift-corrected and calibrated using a c(O2) climatology for deep samples (R2 = 0.89; RMSE = 0.009 µmol kg-1). The survey area was a source of O2 and a sink of CO2 for most of the summer. The deployment captured two different surface waters: the Norwegian Atlantic Current (NwAC) and the Norwegian Coastal Current (NCC). The NCC was characterised by lower c(O2) and CT than the NwAC, as well as lower N(O2), N(CT) and craw(Chl a). Our results show the potential of glider data to simultaneously capture time and depth-resolved variability in CT and O2.
format Dataset
author Possenti, Luca
spellingShingle Possenti, Luca
Svinoy transect oxygen and dissolved inorganic carbon
author_facet Possenti, Luca
author_sort Possenti, Luca
title Svinoy transect oxygen and dissolved inorganic carbon
title_short Svinoy transect oxygen and dissolved inorganic carbon
title_full Svinoy transect oxygen and dissolved inorganic carbon
title_fullStr Svinoy transect oxygen and dissolved inorganic carbon
title_full_unstemmed Svinoy transect oxygen and dissolved inorganic carbon
title_sort svinoy transect oxygen and dissolved inorganic carbon
publisher University of Bergen
publishDate 2020
url https://dx.doi.org/10.21335/nmdc-1654657723
http://metadata.nmdc.no/metadata-api/landingpage/cee3e811e0369a90fd709de3824a8708
geographic Norwegian Sea
geographic_facet Norwegian Sea
genre Norwegian Sea
genre_facet Norwegian Sea
op_rights Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
cc-by-4.0
op_rightsnorm CC-BY
op_doi https://doi.org/10.21335/nmdc-1654657723
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