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Dataset Overview | National Centers for Environmental Information (NCEI)

Dissolved inorganic carbon (DIC), total alkalinity, partial pressure of CO2 (pCO2), pH on total scale, water temperature, salinity and other variables collected from discrete sample and profile observations during NOAA Ship Discoverer cruise EQ92_FALL (EXPOCODE 31DS19920906) in the Equatorial Pacific Ocean from 1992-09-06 to 1992-12-08 (NCEI Accession 0000193)

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This dataset includes dissolved inorganic carbon (DIC), total alkalinity, partial pressure of CO2 (pCO2), pH on total scale, water temperature, salinity, dissolved oxygen concentration, nutrients, carbon-13 and other variables collected from discrete sample and profile observations during NOAA Ship Discoverer cruise EQ92_FALL (EXPOCODE 31DS19920906) in the Equatorial Pacific Ocean from 1992-09-06 to 1992-12-08. The instruments used to collect these data include alkalinity titrator, carbon dioxide (CO2) gas analyzer, coulometer for DIC measurement, CTD, Niskin bottles, and others. These data were collected by Rik Wanninkhof of NOAA Atlantic Oceanographic and Meteorological Laboratory and Richard A. Feely of US DOC; NOAA; OAR; Pacific Marine Environmental Laboratory as part of the EQ92_FALL data set. CDIAC associated the following cruise ID(s) with this data set: EQ92_FALL
  • Cite as: Lamb, Marilyn F.; Hendee, James C.; Wanninkhof, Rik; Feely, Richard A.; Millero, Frank J.; Byrne, Robert H.; Peltzer, Edward T.; Wilson, Doug; Berberian, George A. (2001). Dissolved inorganic carbon (DIC), total alkalinity, partial pressure of CO2 (pCO2), pH on total scale, water temperature, salinity and other variables collected from discrete sample and profile observations during NOAA Ship Discoverer cruise EQ92_FALL (EXPOCODE 31DS19920906) in the Equatorial Pacific Ocean from 1992-09-06 to 1992-12-08 (NCEI Accession 0000193). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.eq92_fall. Accessed [date].
gov.noaa.nodc:0000193
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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 1992-09-06 to 1992-12-08
Spatial Bounding Box Coordinates
West: -140.303
East: -77.331
South: -14.0008
North: 10.018
Spatial Coverage Map
General Documentation
Associated Resources
  • Lamb, M. F., J.C. Hendee, R. Wanninkhof, R.A. Feely, F.J. Millero, R. Byrne, E.T. Peltzer, D. Wilson, and G. Berberian (1995). Chemical and hydrographic measurements from the Equatorial Pacific during boreal fall 1992. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee, EQ92_FALL.
  • Lamb, M. F., Lantry, T., Hendee, J., McTaggart, K. E., Murphy, P. P., Feely, R. A., Wanninkhof, R., Millero, F. J., Byrne, R. H., Peltzer, E. T., and Frazel, D., 1995, Chemical and Hydrographic measurements from the Equatorial Pacific during fall, 1992: Contribution No. 1341 from NOAA/Pacific Marine Environmental Laboratory, 1341.
  • NOAA National Centers for Environmental Information (2022). Ocean Carbon and Acidification Data System (OCADS). NOAA National Centers for Environmental Information. https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
Publication Dates
  • publication: 2001-04-16
  • revision: 2017-02-21
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
Supplemental Information
These data were acquired by NCEI from the Carbon Dioxide Information Analysis Center (CDIAC) in accordance with an archival submission agreement between CDIAC and NCEI.

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: Lamb, Marilyn F.; Hendee, James C.; Wanninkhof, Rik; Feely, Richard A.; Millero, Frank J.; Byrne, Robert H.; Peltzer, Edward T.; Wilson, Doug; Berberian, George A. (2001). Dissolved inorganic carbon (DIC), total alkalinity, partial pressure of CO2 (pCO2), pH on total scale, water temperature, salinity and other variables collected from discrete sample and profile observations during NOAA Ship Discoverer cruise EQ92_FALL (EXPOCODE 31DS19920906) in the Equatorial Pacific Ocean from 1992-09-06 to 1992-12-08 (NCEI Accession 0000193). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.eq92_fall. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Publishers
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
  • CTDTMP
  • DELC13
  • DIC
  • NITRAT
  • NITRIT
  • OXYGEN
  • PHSPHT
  • SALNTY
  • SILCAT
  • TA
  • THETA
  • fCO2
  • pH
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
  • Pacific Ocean
Project keywords NODC PROJECT NAMES THESAURUS Cruise ID
  • EQ92_FALL
EXPOCODE
  • 31DS19920906
Global Change Master Directory (GCMD) Project Keywords Ocean Acidification Search Keywords
  • Ocean Carbon and Acidification Data System (OCADS) Project
Reference Section ID
  • EQ92_FALL
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Lamb, Marilyn F.; Hendee, James C.; Wanninkhof, Rik; Feely, Richard A.; Millero, Frank J.; Byrne, Robert H.; Peltzer, Edward T.; Wilson, Doug; Berberian, George A. (2001). Dissolved inorganic carbon (DIC), total alkalinity, partial pressure of CO2 (pCO2), pH on total scale, water temperature, salinity and other variables collected from discrete sample and profile observations during NOAA Ship Discoverer cruise EQ92_FALL (EXPOCODE 31DS19920906) in the Equatorial Pacific Ocean from 1992-09-06 to 1992-12-08 (NCEI Accession 0000193). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.eq92_fall. 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
  • 2001-04-16T04:00:00Z - NCEI Accession 0000193 v1.1 was published.
  • 2013-03-14T15:47:59Z - NCEI Accession 0000193 was revised and v1.2 was published.
    Rationale: Additional metadata files were received or created for this dataset. These updates were copied into the about/ 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.
  • 2013-07-09T14:26:11Z - NCEI Accession 0000193 was revised and v2.3 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.
  • 2017-02-21T15:23:13Z - NCEI Accession 0000193 was revised and v3.4 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: DIC; Observation type: discrete; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Calculated; Replicate information: Duplicate pairs tripped at the maximal depth throughout the cruise show a mean difference of 0.1 +/- 2.1 μmol/kg (n = 93).; Standardization description: The coulometers were each calibrated by injecting aliquots of pure CO2 (99.995%) by means of an 8-port valve outfitted with two sample loops. The loop volumes were calibrated at BNL (Wilke, 1993) prior to, and following, the cruise, and no significant difference was found between the pre- and post-cruise calibrations.; CRM batch number: 12.
  • Parameter or Variable: Total alkalinity; Abbreviation: TA; Observation type: discrete; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Type of titration: Single point titration; Cell type (open or closed): Closed; Curve fitting method: The TAlk titration system was similar to the one used in previous studies (Thurmond and Millero, 1982; Bradshaw and Brewer, 1988) and consisted of a Metrohm 665 DosimatJ titrator and an Orion 720A pH meter operated by a personal computer. The titration was made by adding HCl to seawater past the carbonic acid end point. A typical titration records the emf reading after it becomes stable (0.09 mV) and adds enough acid to change the voltage by a pre-assigned increment (13 mV). The electrodes used to measure emf consisted of a ROSSJ glass pH electrode and an OrionJ double junction Ag/AgCl reference electrode.; Method reference: Thurmond, V.L., and F.J. Millero (1982): The ionization of carbonic acid in sodium chloride solutions at 25C. J. Solution Chem., 11, 447B11,456. Bradshaw, A.L., and P.G. Brewer (1988): High precision measurements of alkalinity and total carbon dioxide in seawater by potentiometric titration. Presence of unknown protolyte(s)? Mar. Chem., 23, 69B86..
  • Parameter or Variable: pH; Abbreviation: pH; pH scale: total pH scale; Observation type: discrete; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Temperature of pH measurement: 25C; Detailed sampling and analyzing information: All spectrophotometric pH measurements were made using the indicator m-Cresol Purple. Sample cells (10-cm pathlength spectrophotometric cells, 30-cm3 volume) were filled directly from the NiskinJbottle.; Uncertainty: Na.
  • Parameter or Variable: pCO2 (fCO2) discrete; Abbreviation: fCO2; Observation type: discrete; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Seawater volume: 500 mL; Headspace volume: 60 mL; Temperature of measurement: 20.00 +/- 0.02C,; Detailed sampling and analyzing information: The AOML discrete fCO2 system is patterned after the design described in Chipman et al. (1993) and is discussed in detail in Wanninkhof and Thoning (1993). The major difference between the two systems is that the AOML system uses a LicorJ (model 6262) non-dispersive infrared analyzer, while the Chipman et al. system utilizes a gas chromatograph with a flame ionization detector and a methanizer, which quantitatively converts CO2 into CH4 for analysis. The headspaces of the two flasks are equilibrated simultaneously in channels A and B. While headspace from the flask in channel A goes through the IR analyzer, the headspace of the flask in channel B is recirculated in a closed loop. The sample in the A channel is equilibrated for 17 minutes while the air from the headspace of the flask flows through the IR analyzer.; Uncertainty: Precision of the fCO2 analyses shown in Table 3 of the cruise report at: http://cdiac.esd.ornl.gov/ftp/oceans/eqpac92noaa/.; Method reference: Chipman, D.W., J. Marra, and T. Takahashi (1993): Primary production at 47N and 20W in the North Atlantic Ocean: A comparison between the 14C incubation method and mixed layer carbon budget observations. Deep-Sea Res. II, 40, 151B169. Wanninkhof, R., and K. Thoning (1993): Surface water fCO2 measurements using continuous and discrete sampling methods. Mar. Chem. 44, 189B204..
  • Parameter or Variable: CTDTMP; Abbreviation: CTDTMP; Unit: DEG_C; Controlled vocabulary name: WATER TEMPERATURE; 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: OXYGEN; Abbreviation: OXYGEN; Unit: UMOL/KG; Controlled vocabulary name: DISSOLVED OXYGEN; 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: SILCAT; Abbreviation: SILCAT; Unit: UMOL/KG; Controlled vocabulary name: silicate; 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: DELC13; Abbreviation: DELC13; Unit: /MILLE; Controlled vocabulary name: DELTA CARBON-13; In-situ / Manipulation / Response variable: in-situ.
  • Parameter or Variable: THETA; Abbreviation: THETA; Unit: DEG_C; Controlled vocabulary name: Potential temperature (theta); In-situ / Manipulation / Response variable: in-situ .
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
  • bottle
  • carbon dioxide (CO2) gas analyzer
  • coulometer for DIC measurement
  • CTD
  • flask with closed headspace for discrete CO2 measurement
  • spectrophotometer
  • titrator
Platform
  • NOAA Ship Discoverer
Last Modified: 2024-03-28T12:44:58Z
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