Dissolved inorganic carbon, pH, temperature, salinity and other variables collected from time series and surface observations using Moored Autonomous Dissolved Inorganic Carbon (MADIC) System, Sunburst SAMI2 pH sensor, and other instruments from Kewalo Buoy near the coast of Honolulu, Hawaii from 2013-10-31 to 2014-06-15 (NCEI Accession 0132048)

Metadata Updated: February 27, 2019

To expand the number of tools available for autonomous carbonate system observations, we have developed a robust surface ocean dissolved inorganic carbon (DIC) sensor capable of extended (>year) field deployments with a laboratory determined uncertainty of plus/minus 5 umol kg-1. The prototype sensor was deployed off shore of Honolulu, Hawaii for seven months on a moored buoy equipped with a Sea-Bird Electronics CTD and SAMI pH sensor unit. The buoy was deployed ~25m from an existing CO2 buoy, which allowed us to over constrain the carbonate system and thoroughly evaluate the performance of the prototype DIC sensor. In addition, 51 discrete bottle samples were collected throughout the seven month deployment and analyzed for DIC via coulometry. Results from this field test confirm that direct measurement of DIC is ~90% more accurate than estimates of DIC calculated from contemporaneous and collocated measurements of pH and CO2. The improved accuracy from directly measuring DIC gives rise to new opportunities for quantitative, autonomous carbon cycle studies.

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Dates

Metadata Date December 13, 2018
Metadata Created Date December 20, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) October 30, 2015 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NOAA CSW Harvest Source

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Additional Metadata

Resource Type Dataset
Metadata Date December 13, 2018
Metadata Created Date December 20, 2015
Metadata Updated Date February 27, 2019
Reference Date(s) October 30, 2015 (publication)
Responsible Party (Point of Contact)
Contact Email
Access Constraints Cite as: Fassbender, Andrea J.; Sabine, Christopher L.; Meinig, Christian; De Carlo, Eric H. (2015). Dissolved inorganic carbon, pH, temperature, salinity and other variables collected from time series and surface observations using Moored Autonomous Dissolved Inorganic Carbon (MADIC) System, Sunburst SAMI2 pH sensor, and other instruments from Kewalo Buoy near the coast of Honolulu, Hawaii from 2013-10-31 to 2014-06-15 (NCEI Accession 0132048). Version 1.1. NOAA National Centers for Environmental Information. Dataset. doi:10.7289/V5RB72PT [access date], NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Bbox East Long -157.865
Bbox North Lat 21.288
Bbox South Lat 21.288
Bbox West Long -157.865
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Preview graphic
Graphic Preview File https://data.nodc.noaa.gov/cgi-bin/gfx?id=gov.noaa.nodc:0132048
Graphic Preview Type PNG
Guid gov.noaa.nodc:0132048
Harvest Object Id ccb1944e-1f24-4353-96ae-4eb511768f49
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence accessLevel: Public
Metadata Language eng
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2013-10-31
Temporal Extent End 2014-06-15

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