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

Dissolved inorganic carbon, total alkalinity, pH on total scale, water temperature, salinity and other parameters collected from profile discrete observations using CTD, Niskin Bottles and other instruments during the R/V Pelican cruise RAPID 3 (EXPOCODE 32PE20180319), in the Gulf of Mexico from 2018-03-19 to 2018-03-23 (NCEI Accession 0240322)

browse graphicPreview graphic
This dataset contains profile discrete measurements of dissolved inorganic carbon, total alkalinity, pH on total scale, water temperature, salinity and other parameters collected from profile discrete observations using CTD, Niskin Bottles and other instruments during the R/V Pelican cruise RAPID 3 (EXPOCODE 32PE20180319), in the Gulf of Mexico from 2018-03-19 to 2018-03-23. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry. Through the SOOP program we measure air and ocean surface pCO2 and take discrete samples of other carbon parameters. This effort is in support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP) and the Climate Program Office.
  • Cite as: Wanninkhof, Rik; Barbero, Leticia (2021). Dissolved inorganic carbon, total alkalinity, pH on total scale, water temperature, salinity and other parameters collected from profile discrete observations using CTD, Niskin Bottles and other instruments during the R/V Pelican cruise RAPID 3 (EXPOCODE 32PE20180319), in the Gulf of Mexico from 2018-03-19 to 2018-03-23 (NCEI Accession 0240322). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/67rd-0e29. Accessed [date].
gov.noaa.nodc:0240322
Full Text · XML
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 2018-03-19 to 2018-03-23
Spatial Bounding Box Coordinates
West: -95.016
East: -94.4
South: 27.318
North: 29.209
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2021-08-21
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
Purpose To measure key carbon, physical and biogeochemical parameters in surface waters and monitor changes over time.
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: Wanninkhof, Rik; Barbero, Leticia (2021). Dissolved inorganic carbon, total alkalinity, pH on total scale, water temperature, salinity and other parameters collected from profile discrete observations using CTD, Niskin Bottles and other instruments during the R/V Pelican cruise RAPID 3 (EXPOCODE 32PE20180319), in the Gulf of Mexico from 2018-03-19 to 2018-03-23 (NCEI Accession 0240322). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/67rd-0e29. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Publishers
Acknowledgments
  • Funding Information: NOAA Climate Program Office; NOAA's Ocean Acidification Program (Quantifying sea-air CO2 fluxes using surface water pCO2 measurements from ships of opportunity, Ocean acidification Ship of Opportunity (SOOP))
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 Variable Abbreviations
  • CTDSAL_PSS78
  • DIC
  • SST_C
  • TA
  • pH_TS_20C; pH_TS_25C
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
  • Gulf of Mexico
Project keywords NODC PROJECT NAMES THESAURUS Cruise ID
  • RAPID 3
EXPOCODE
  • 32PE20180319
Ocean Acidification Search Keywords
  • Ocean Acidification Program (OAP)
  • Ocean Carbon and Acidification Data System (OCADS) Project
Reference Section ID
  • Gulf of Mexico
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Wanninkhof, Rik; Barbero, Leticia (2021). Dissolved inorganic carbon, total alkalinity, pH on total scale, water temperature, salinity and other parameters collected from profile discrete observations using CTD, Niskin Bottles and other instruments during the R/V Pelican cruise RAPID 3 (EXPOCODE 32PE20180319), in the Gulf of Mexico from 2018-03-19 to 2018-03-23 (NCEI Accession 0240322). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/67rd-0e29. 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
  • 2021-08-21T04:40:45Z - NCEI Accession 0240322 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: DIC; Unit: micro-mol/kg; Observation type: Discrete profile measurement; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: CTD, Niskin Bottles; Analyzing instrument: Coulometer used: AOML5 (SOMMA #5); Detailed sampling and analyzing information: Analysis date: 08/09/2018 Coulometer used: DICE-CM5011- AOML 5 Blanks: 12.0 counts/min CRM # 0355 was used and with an assigned value of (includes both DIC and salinity): Batch 173, c: 2042.41 μmol/kg, S: 33.414 CRM values measured: AOML 5: offset 0.71 μmol/kg (2043.12 μmol/kg). Average run time, minimum run time, maximum run time: 8, 7 and 9 min. Analysis date: 08/09/2018 Coulometer used: DICE-CM5011- AOML 6 Blanks: 12.0 raised to15.0 counts/min CRM # 416 was used and with an assigned value of (includes both DIC and salinity): Batch 173, c: 2042.41 μmol/kg, S: 33.414 CRM values measured: AOML 6: offset 4.28 μmol/kg (2046.69 μmol/kg). Average run time, minimum run time, maximum run time: 8, 8 and 9 min. Reproducibility: (# samples and average difference): No duplicate samples were collected. CRM, salinity and HgCl2 correction applied: Salinity correction was applied using TSG salinity. Remarks The volume correction was applied due to added HgCl2 (Measured DIC*1.00037). The first CRM of each cell was used for a CRM correction. The DIC instruments were stable: the gas loop and CRM values did not change significantly throughout the life span of each cell. The blank on AOML 6 (08/09/2018) was raised from 12.0 to 15.0 before running the 2nd gas calibration.; CRM manufacturer: Dr. A. Dickson of UCSD; CRM batch number: Batch 173; Preservation method: saturated HgCl2; Preservative volume: 0.2 ml; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value, 5 = value not reported, 6 = mean of replicate measurements, 9 = sample not drawn.; Researcher name: Rik Wanninkhof, Leticia Barbero; Researcher institution: Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration (NOAA).
  • Parameter or Variable: Total alkalinity; Abbreviation: TA; Unit: micro-mol/kg; Observation type: Discrete and profile measurement; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: CTD, Niskin Bottles; Type of titration: Full Titration; Cell type (open or closed): Open; Curve fitting method: Least-Square Analysis; Detailed sampling and analyzing information: Analysis date: 08/17/2018 Titration system used: Open cell CRM #41 Batch 153, Salinity = 33.357, cert. TA = 2225.59μmol/kg. CRM #739 Batch 150, Salinity = 33.343, cert. TA = 2214.71μmol/kg On 08/17/2018 CRM #41, Batch 153 was analyzed before the samples and CRM #739, Batch 150 was run at the end of analysis on system 1. The TA for the water samples was corrected using the daily averaged ratios between the certified and measured values of the CRMs run on system 1 cell. The following table shows the CRM measurements for each day and cell.; CRM manufacturer: Dr. A. Dickson of UCSD; CRM batch number: Batch 153; Preservation method: saturated HgCl2; Preservative volume: 0.2 ml; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value, 5 = value not reported, 6 = mean of replicate measurements, 9 = sample not drawn.; Method reference: Millero, F. J., Zhang, J. Z., Lee, K., and Campbell, D. M. (1993). Titration alkalinity of seawater. Marine Chemistry, 44(2), 153-165.; Researcher name: Rik Wanninkhof, Leticia Barbero; Researcher institution: Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration (NOAA).
  • Parameter or Variable: pH on Total Scale; Abbreviation: pH_TS_20C; pH_TS_25C; Observation type: CTD, Niskin Bottle; Measured or calculated: Measured; Detailed sampling and analyzing information: Analysis date: 08/09/2018 A CRM was analyzed before sample analysis. CRM #478, Batch 173 pH = 7.8767 Spectrophotometer used: HP Agilent 8453. The equations of Liu et al, 2011 formulated using the purified m-cresol purple indicator was used to determine pH of the samples. pH samples were analyzed at 200C at Full Scale (pH 0-14). The pH results are reported at 250C. Temperature for each sample was measured before analysis using a Hart Scientific Fluke 1523 reference thermometer. Approximately 80 mL of sample was extracted from each DIC sample bottle by automated syringe before DIC analysis to determine the pH.; Researcher name: Rik Wanninkhof; Researcher institution: Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration (NOAA).
  • Parameter or Variable: Water temperature; Abbreviation: SST_C; Unit: degrees celsius (ITS-90); Observation type: CTD; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: SBE 38; Uncertainty: plus or minus 0.001 degrees celsius; Researcher name: Rik Wanninkhof; Researcher institution: Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration (NOAA).
  • Parameter or Variable: Salinity; Abbreviation: CTDSAL_PSS78; Unit: practical salinity scale of 1978; Observation type: CTD; In-situ / Manipulation / Response variable: In-situ observation; Sampling instrument: SBE 45; Uncertainty: plus or minus 0.005; Researcher name: Rik Wanninkhof; Researcher institution: Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration (NOAA) .
Acquisition Information (collection)
Instrument
  • carbon dioxide (CO2) gas analyzer
  • CTD
  • Niskin bottle
  • pH sensor
  • titrator
Platform
  • R/V Pelican
Last Modified: 2024-03-08T13:20:29Z
For questions about the information on this page, please email: ncei.info@noaa.gov