Skip to main content
Dataset Overview | National Centers for Environmental Information (NCEI)

Discrete profile measurements of dissolved inorganic carbon, total alkalinity, pH on total scale and other hydrographic and chemical data obtained during R/V Roger Revelle Repeat Hydrography Cruise in the Indian Ocean: GO-SHIP Section I09N (EXPOCODE 33RR20160321), from 2016-03-21 to 2016-04-28 (NCEI Accession 0178637)

browse graphicPreview graphic
This dataset includes discrete profile measurements of dissolved inorganic carbon, total alkalinity, pH (on total scale), temperature, salinity, oxygen, nutrients, chlorofluorocarbons and other chemical measurements during R/V Roger Revelle Repeat Hydrography Cruise in the Indian Ocean: GO-SHIP Section I09N (EXPOCODE 33RR20160321), from 2016-03-21 to 2016-04-28. The instruments used to collect these data include CTD and Niskin bottle.
  • Cite as: Barbero, Leticia; Wanninkhof, Rik; Dickson, Andrew G.; Carlson, Craig A.; Key, Robert M.; Becker, Susan; Swift, James H.; McNichol, Ann; Rodriguez, Carmen (2018). Discrete profile measurements of dissolved inorganic carbon, total alkalinity, pH on total scale and other hydrographic and chemical data obtained during R/V Roger Revelle Repeat Hydrography Cruise in the Indian Ocean: GO-SHIP Section I09N (EXPOCODE 33RR20160321), from 2016-03-21 to 2016-04-28 (NCEI Accession 0178637). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/f59c-dy18. Accessed [date].
gov.noaa.nodc:0178637
Download Data
  • HTTPS (download)
    Navigate directly to the URL for data access and direct download.
  • FTP (download)
    These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).
Distribution Formats
  • Originator data format
Ordering Instructions Contact NCEI for other distribution options and instructions.
Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2016-03-21 to 2016-04-28
Spatial Bounding Box Coordinates
West: 84.6
East: 95.04
South: -28.7
North: 18.1
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2018-11-16
  • revision: 2021-01-29
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number.
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Barbero, Leticia; Wanninkhof, Rik; Dickson, Andrew G.; Carlson, Craig A.; Key, Robert M.; Becker, Susan; Swift, James H.; McNichol, Ann; Rodriguez, Carmen (2018). Discrete profile measurements of dissolved inorganic carbon, total alkalinity, pH on total scale and other hydrographic and chemical data obtained during R/V Roger Revelle Repeat Hydrography Cruise in the Indian Ocean: GO-SHIP Section I09N (EXPOCODE 33RR20160321), from 2016-03-21 to 2016-04-28 (NCEI Accession 0178637). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/f59c-dy18. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Publishers
Acknowledgments
  • Funding Information: NOAA, NSF (GO-SHIP Program)
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords OCADS Study Type
  • Discrete measurement
  • Profile
Provider Keywords
  • GO-SHIP
  • GO-SHIP-I09N
  • Repeat Hydrographic Sections
  • Roger Revelle
Provider Variable Abbreviations
  • ALKALI
  • CFC-11
  • CFC-12
  • CTDOXY
  • CTDSAL
  • CTDTMP
  • DOC
  • NITRAT
  • NITRIT
  • OXYGEN
  • PHSPHT
  • PH_TMP
  • PH_TOT
  • SALNTY
  • SF6
  • SILCAT
  • TCARBN
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords ICES/SeaDataNet Ship Codes
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords Provider Geographic Names
  • Indian Ocean
Project keywords NODC PROJECT NAMES THESAURUS Cruise ID
  • GO-SHIP_I09N_2016
EXPOCODE
  • 33RR20160321
Ocean Acidification Search Keywords
  • Ocean Carbon and Acidification Data System (OCADS) Project
Reference Section ID
  • GO-SHIP_I09N
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Barbero, Leticia; Wanninkhof, Rik; Dickson, Andrew G.; Carlson, Craig A.; Key, Robert M.; Becker, Susan; Swift, James H.; McNichol, Ann; Rodriguez, Carmen (2018). Discrete profile measurements of dissolved inorganic carbon, total alkalinity, pH on total scale and other hydrographic and chemical data obtained during R/V Roger Revelle Repeat Hydrography Cruise in the Indian Ocean: GO-SHIP Section I09N (EXPOCODE 33RR20160321), from 2016-03-21 to 2016-04-28 (NCEI Accession 0178637). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/f59c-dy18. Accessed [date].
Access Constraints
  • Use liability: 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.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2018-11-16T21:16:44Z - NCEI Accession 0178637 v1.1 was published.
  • 2020-10-16T20:40:44Z - NCEI Accession 0178637 was revised and v2.2 was published.
    Rationale: Updates were received for this dataset. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
  • 2021-01-29T22:29:23Z - NCEI Accession 0178637 was revised and v3.3 was published.
    Rationale: Updates were received for this dataset. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Unit: UMOL/KG; Observation type: discrete; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Analyzing instrument: The analysis was done by coulometry with two analytical systems (AOML 3 and AOML 4) used simultaneously on the cruise. Each system consisted of a coulometer (CM5015 UIC Inc) coupled with a Dissolved Inorganic Carbon Extrac- tor (DICE). The DICE system was developed by Esa Peltola and Denis Pierrot of NOAA/AOML and Dana Greeley of NOAA/PMEL to modernize a carbon extractor called SOMMA ([Johnson1985], [Johnson1987], [Johnson1993], [Johnson1992], [Johnson1999]).; Detailed sampling and analyzing information: Samples for DIC measurements were drawn (according to procedures outlined in the PICES Publication, Guide to Best Practices for Ocean CO2 Measurements [Dickson2007]) from Niskin bottles into 294 ml borosilicate glass bottles using silicone tubing. The flasks were rinsed once and filled from the bottom with care not to entrain any bubbles, overflowing by at least one-half volume. The sample tube was pinched off and withdrawn, creating a 6 ml headspace, followed by 0.16 ml of saturated HgCl2 solution which was added as a preservative. The sample bottles were then sealed with glass stoppers lightly covered with Apiezon-L grease and were stored at room temperature for a maximum of 12 hours.; Replicate information: The precision of the two DICE systems can be demonstrated via the replicate samples. Approximately 7% of the Niskins sampled were duplicates taken as a check of our precision. These replicate samples were interspersed through-out the station analysis for quality assurance and integrity of the coulometer cell solutions. The average absolute difference from the mean of these replicates is 1.69 μmol/kg (n=257, stdev=1.51). No major systematic differences between the replicates were observed.; Standardization description: The stability of each coulometer cell solution was confirmed three different ways. 1) Gas loops were run at the beginning and end of each cell; 2) CRM’s supplied by Dr. A. Dickson of SIO, were measured near the beginning; and 3) Duplicate samples were typically run throughout the life of the cell solution. Each coulometer was calibrated by injecting aliquots of pure CO2 (99.999%) by means of an 8-port valve (Wilke et al., 1993) outfitted with two calibrated sample loops of different sizes (~1ml and ~2ml). The instruments were each separately calibrated at the beginning of each cell with a minimum of two sets of these gas loop injections and then again at the end of each cell to ensure no drift during the life of the cell. These standard loops were consistent throughout the cruise.; CRM batch number: The CRM certified value for batch 152 is 2020.88 μmol/kg and for batch 153 is 2017.95 μmol/k.; Preservation method: 0.16 ml of saturated HgCl2 used for sample preservation; Preservative correction: The sample bottles were 288 ml (calibrated by Esa Peltola, AOML).; Uncertainty: A correction was also applied for the offset from the CRM. This additive correction was applied for each cell using the CRM value obtained at the beginning of the cell. The average correction was 0.91 μmol/kg for AOML 3 and 5.16 μmol/kg for AOML 4.; Method reference: Johnson, K.M., A.E. King, and J. McN. Sieburth (1985): “Coulometric DIC analyses for marine studies: An introduction.” Mar. Chem., 16, 61-82.; Researcher name: Rik Wanninkhof; Researcher institution: NOAA/AOML.
  • Parameter or Variable: Total alkalinity; Abbreviation: ALKALI; Unit: UMOL/KG; Observation type: discrete; Measured or calculated: Measured; Type of titration: two-stage open cell acidimetric, potentiometric; Cell type (open or closed): open cell titration; Detailed sampling and analyzing information: Samples for total alkalinity measurements were taken at all I09N Stations (84-196). Two Niskin bottles at each station were sampled twice for duplicate measurements except for stations where 15 or less Niskin bottles were sampled. Using silicone tubing, the total alkalinity samples were drawn from Niskin bottles into 250 mL Pyrex bottles, making sure to rinse the bottles and Teflon sleeved glass stoppers at least twice before the final filling. A headspace of approximately 3 mL was removed and 0.06 mL of saturated mercuric chloride solution was added to each sample for preservation. After sampling was completed, each sample’s temperature was equilibrated to approximately 20°C using a Thermo Scientific RTE water bath.; CRM manufacturer: Dickson laboratory Certified Reference Material (CRM); CRM batch number: Batch 152 2216.94 +/- 0.60 𝜇mol/kg (33;16); Batch 153 2225.03 +/- 0.43 𝜇mol kg-1 (14) [mean +/- std. dev. (n)]; TA blank correction: N/A; Uncertainty: A total of 138 Niskin bottles were sampled for duplicate measurements and gave an average difference of 0.01 +/- 1.01 umol kg-1.; Method reference: Dickson, Andrew G., Chris Sabine and James R. Christian, editors, "Guide to Best Practices for Ocean CO2 Measurements", Pices Special Publication 3, IOCCP Report No. 8, October 2007, SOP 3b, "Determination of total alkalinity in sea water using an open-cell titration"; Researcher name: Andrew Dickson; Researcher institution: SIO.
  • Parameter or Variable: pH; Abbreviation: PH_TOT; pH scale: total hydrogen ion concentration scale (mol/kg-sw); Observation type: discrete; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Temperature of pH measurement: 25 °C; Detailed sampling and analyzing information: Samples were collected in 250 mL Pyrex glass bottles and sealed using grey butyl rubber stoppers held in place by aluminum-crimped caps. Each bottle was rinsed two times and allowed to overflow by one additional bottle volume. Prior to sealing, each sample was given a 1% headspace and poisoned with 0.02% of the sample volume of saturated mercuric chloride (HgCl2). Samples were collected only from Niskin bottles that were also being sampled for both total alkalinity and dissolved inorganic carbon in order to completely characterize the carbon system. Additionally, two duplicate samples were collected from almost all stations for quality control purposes. pH was measured spectrophotometrically on the total hydrogen scale using an Agilent 8453 spectrophotometer and in accordance with the methods outlined by Carter et al., 2013 [Carter2013]. A Kloehn V6 syringe pump was used to autonomously fill, mix, and dispense sample through the custom 10cm flow-through jacketed cell. A Thermo NESLAB RTE-7 recirculating water bath was used to maintain the cell temperature at 25.0°C during analyses, and a YSI 4600 precision thermometer and probe were used to monitor and record the temperature of each sample immediately after the spectrophotometric measurements were taken. The indicator meta-cresol purple (mCP) was used to measure the absorbance of light measured at two different wavelengths (434 nm, 578 nm) corresponding to the maximum absorbance peaks for the acidic and basic forms of the indicator dye. A baseline absorbance was also measured and subtracted from these wavelengths. The baseline absorbance was determined by averaging the absorbances from 725- 735nm. The ratio of the absorbances was then used to calculate pH on the total scale using the equations outlined in Liu et al., 2011 [Liu2011]. The salinity data used was obtained from the conductivity sensor on the CTD.; Researcher name: Andrew Dickson; Researcher institution: SIO.
  • Parameter or Variable: PH_TMP; Abbreviation: PH_TMP; Unit: DEG_C; Controlled vocabulary name: pH; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: CTDTMP; Abbreviation: CTDTMP; Unit: DEG_C; Controlled vocabulary name: WATER TEMPERATURE; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: CTDSAL; Abbreviation: CTDSAL; Controlled vocabulary name: SALINITY; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: SALNTY; Abbreviation: SALNTY; Controlled vocabulary name: SALINITY; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: CTDOXY; Abbreviation: CTDOXY; Unit: UMOL/KG; Controlled vocabulary name: DISSOLVED OXYGEN; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: OXYGEN; Abbreviation: OXYGEN; Unit: UMOL/KG; Controlled vocabulary name: DISSOLVED OXYGEN; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: SILCAT; Abbreviation: SILCAT; Unit: UMOL/KG; Controlled vocabulary name: silicate; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: NITRAT; Abbreviation: NITRAT; Unit: UMOL/KG; Controlled vocabulary name: NITRATE; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: NITRIT; Abbreviation: NITRIT; Unit: UMOL/KG; Controlled vocabulary name: NITRITE; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: PHSPHT; Abbreviation: PHSPHT; Unit: UMOL/KG; Controlled vocabulary name: phosphate; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: CFC-11; Abbreviation: CFC-11; Unit: PMOL/KG; Controlled vocabulary name: CHLOROFLUOROCARBON-11 (CFC-11); In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: CFC-12; Abbreviation: CFC-12; Unit: PMOL/KG; Controlled vocabulary name: CHLOROFLUOROCARBON-12 (CFC-12); In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: SF6; Abbreviation: SF6; Unit: FMOL/KG; Controlled vocabulary name: Sulfur Hexaflouride (SF6); In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: Dissolved Organic Carbon; Abbreviation: DOC; Unit: UMOL/KG; Observation type: Discrete; In-situ / Manipulation / Response variable: in-situ; Researcher name: Craig Carlson; Researcher institution: University of California, Santa Barbara .
Acquisition Information (collection)
Instrument
  • carbon dioxide (CO2) gas analyzer
  • CTD
  • Niskin bottle
  • titrator
Platform
  • R/V Roger Revelle
Last Modified: 2024-03-08T13:16:58Z
For questions about the information on this page, please email: ncei.info@noaa.gov