Dataset Overview | National Centers for Environmental Information (NCEI)

Mean ventilation age reported for 7 regions of the Atlantic based on samples collected from R/V Knorr cruises KN199-04 and KN204-01 during 2010-2011 (NCEI Accession 0291547)

Preview graphic

This dataset contains data collected on R/V Knorr during cruises KN199-04 and KN204-01 in the North Atlantic Ocean from 2010-10-16 to 2011-12-10. These data include depth. These data were collected by William M. Smethie Jr. of Lamont-Doherty Earth Observatory and Mark Holzer and Yu-Heng Ting of University of New South Wales as part of the "Collaborative Research: Completing a 10-Year Record of Deep Western Boundary Current Observations at Line W; A Contribution to the Atlantic Meridional Overturning Circulation Study (DWBC Obs Line W)", "RAPID: Continuation of U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT RAPID CFC SF6)", "U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT CFC and SF6)", and "U.S. GEOTRACES North Atlantic Transect (U.S. GEOTRACES NAT)" projects and "U.S. GEOTRACES (U.S. GEOTRACES)" program. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2020-05-27.

The following is the text of the dataset description provided by BCO-DMO:

Mean ventilation age reported for 7 regions of the Atlantic

Dataset Description:
Water mass fractions and ages calculated from hydrographic and tracer data using a maximum-entropy inversion technique.

This dataset contains the fraction of water last ventilated in a given region in a time less than or equal to 39 years ago as well as the corresponding ensemble standard deviations.

Data File Formats:
For a .csv or .tsv format of these data, use the "Get Data" button at the top of the BCO-DMO metadata page.
For a Matlab file containing all of the water mass fraction data from this project, see the "Data Files" section of the BCO-DMO metadata page.

Dataset Citation

Cite as: Smethie Jr., William M.; Holzer, Mark; Ting, Yu-Heng (2024). Mean ventilation age reported for 7 regions of the Atlantic based on samples collected from R/V Knorr cruises KN199-04 and KN204-01 during 2010-2011 (NCEI Accession 0291547). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0291547. Accessed [date].

Dataset Identifiers

ISO 19115-2 Metadata

gov.noaa.nodc:0291547

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	MAT-file TSV
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	2010-10-16 to 2011-12-10
Spatial Bounding Box Coordinates	West: -69.827 East: -9.662 South: 17.351 North: 39.701
Spatial Coverage Map

General Documentation

NCEI Dataset Landing Page
Navigate directly to the URL for a descriptive web page with download links.
Descriptive Information
Navigate directly to the URL for a descriptive web page with download links.

Associated Resources

Biological, chemical, physical, biogeochemical, ecological, environmental and other data collected from around the world during historical and contemporary periods of biological and chemical oceanographic exploration and research managed and submitted by the Biological and Chemical Oceanography Data Management Office (BCO-DMO)
- NCEI Collection
  Navigate directly to the URL for data access and direct download.
Smethie Jr., W. M., Holzer, M., Ting, Y. (2020) Mean ventilation age reported for 7 regions of the Atlantic based on samples collected from R/V Knorr cruises KN199-04 and KN204-01 during 2010-2011. Biological and Chemical Oceanography Data Management Office (BCO-DMO). Dataset version 2020-05-07. https://doi.org/10.26008/1912/bco-dmo.810885.1
- https://doi.org/10.26008/1912/bco-dmo.810885.1 (download)
  originator dataset

gov.noaa.nodc:BCO-DMO

Publication Dates	publication: 2024-04-21
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	Acquisition Description: A maximum-entropy inversion technique was applied to CFC and SF6 measurements made on the U.S. GEOTRACES North Atlantic Transect, and radiocarbon concentrations interpolated to sample locations along the transact from gridded data reported in the GLODAP data compilation, to determine mean ages and source water compositions of each water sample. Details are described in Holzer et al. (2018). See the attached README file (GA03_transit-time_partitioned_water-mass_fractions_v2_README.pdf) for more information on methods and a map of region locations.
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: Smethie Jr., William M.; Holzer, Mark; Ting, Yu-Heng (2024). Mean ventilation age reported for 7 regions of the Atlantic based on samples collected from R/V Knorr cruises KN199-04 and KN204-01 during 2010-2011 (NCEI Accession 0291547). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0291547. Accessed [date].
Cited Authors	Smethie Jr., William M. Lamont-Doherty Earth Observatory Holzer, Mark University of New South Wales Ting, Yu-Heng University of New South Wales
Principal Investigators	William M. Smethie Jr. Columbia University; Lamont-Doherty Earth Observatory (LDEO) Mark Holzer University of New South Wales Yu-Heng Ting University of New South Wales
Contributors	Columbia University; Lamont-Doherty Earth Observatory (LDEO)
Resource Providers	Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Points of Contact	Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Publishers	NOAA National Centers for Environmental Information
Acknowledgments	Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0928612 Award URL: http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0928612 Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1132545 Award URL: http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1132545 Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1332834 Award URL: http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1332834

Theme keywords	NODC DATA TYPES THESAURUS DEPTH - OBSERVATION WMO_CategoryCode oceanography BCO-DMO Standard Parameters age bottle cast cruise id date depth latitude longitude no standard parameter station Originator Parameter Names AONG_Age AONG_Age_Uncert Cast_No Cruise_ID Date Depth Distance_East Ideal_Mean_Age Ideal_Mean_Age_Uncert LBIR_Age LBIR_Age_Uncert Latitude Longitude MED_Age MED_Age_Uncert NAAD_Age NAAD_Age_Uncert OTHER_Age OTHER_Age_Uncert SAAD_Age SAAD_Age_Uncert SPNA_Age SPNA_Age_Uncert STNA_Age STNA_Age_Uncert Sample_Bottle Station_No
Data Center keywords	NODC COLLECTING INSTITUTION NAMES THESAURUS Columbia University; Lamont-Doherty Earth Observatory NODC SUBMITTING INSTITUTION NAMES THESAURUS Biological and Chemical Oceanography Data Management Office Global Change Master Directory (GCMD) Data Center Keywords BCO-DMO > Biological and Chemical Oceanography Data Management Office COLUMBIA/LDEO > Lamont-Doherty Earth Observatory, Columbia University
Platform keywords	NODC PLATFORM NAMES THESAURUS R/V Knorr BCO-DMO Platform Names R/V Knorr Global Change Master Directory (GCMD) Platform Keywords Ships ICES/SeaDataNet Ship Codes KNORR (call sign: KCEJ, ICES code: 316N, 1970)
Place keywords	NODC SEA AREA NAMES THESAURUS North Atlantic Ocean Global Change Master Directory (GCMD) Location Keywords OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN Provider Place Names Subtropical northern Atlantic Ocean
Project keywords	NODC PROJECT NAMES THESAURUS GEOTRACES BCO-DMO Standard Programs U.S. GEOTRACES (U.S. GEOTRACES) BCO-DMO Standard Projects Collaborative Research: Completing a 10-Year Record of Deep Western Boundary Current Observations at Line W; A Contribution to the Atlantic Meridional Overturning Circulation Study (DWBC Obs Line W) RAPID: Continuation of U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT RAPID CFC SF6) U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT CFC and SF6) U.S. GEOTRACES North Atlantic Transect (U.S. GEOTRACES NAT) Global Change Master Directory (GCMD) Project Keywords IPY-GEOTRACES > International Polar Year GEOTRACES: An international study of the biogeochemical cycles of Trace Elements and Isotopes in the Arctic and Southern Oceans Provider Cruise IDs KN199-04 KN204-01 Provider Funding Award Information Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0928612 Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1132545 Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1332834
Keywords	NCEI ACCESSION NUMBER 0291547

Use Constraints	Cite as: Smethie Jr., William M.; Holzer, Mark; Ting, Yu-Heng (2024). Mean ventilation age reported for 7 regions of the Atlantic based on samples collected from R/V Knorr cruises KN199-04 and KN204-01 during 2010-2011 (NCEI Accession 0291547). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0291547. Accessed [date].
Data License	This dataset is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) License. SPDX License: Creative Commons Attribution 4.0 International (CC-BY-4.0)
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	2024-04-21T15:34:57Z - NCEI Accession 0291547 v1.1 was published.
Output Datasets	NCEI Accession 0291547 v1.1 NCEI Accession 0291547 v1.1 (download) published 2024-04-21T15:34:57Z

Acquisition Information (collection)
Platform	R/V Knorr

Last Modified: 2024-05-31T15:15:28Z
For questions about the information on this page, please email: ncei.info@noaa.gov

Mean ventilation age reported for 7 regions of the Atlantic based on samples collected from R/V Knorr cruises KN199-04 and KN204-01 during 2010-2011 (NCEI Accession 0291547)

Follow us

Contact us