Dataset: The fraction of water last ventilated in a given region in a time less than or equal to 39 years ago based on samples collected from R/V Knorr cruises KN199-04 and KN204-01 during 2010-2011

Name: The fraction of water last ventilated in a given region in a time less than or equal to 39 years ago based on samples collected from R/V Knorr cruises KN199-04 and KN204-01 during 2010-2011
Published: 2020-05-07
Keywords: oceans

Final no updates expectedDOI: 10.26008/1912/bco-dmo.810838.1Version 1 (2020-05-07)Dataset Type:Cruise Results

Principal Investigator: William M. Smethie Jr. (Lamont-Doherty Earth Observatory)

Co-Principal Investigator, Contact: Mark Holzer (University of New South Wales)

Co-Principal Investigator: Yu-Heng Ting (University of New South Wales)

BCO-DMO Data Manager: Shannon Rauch (Woods Hole Oceanographic Institution)

Program: U.S. GEOTRACES (U.S. GEOTRACES)

Project: U.S. GEOTRACES North Atlantic Transect (GA03) (U.S. GEOTRACES NAT)

Project: U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT CFC and SF6)

Project: RAPID: Continuation of U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT RAPID CFC SF6)

Project: 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)

Abstract

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.

Cite Dataset

Spatial Extent: N:39.70 E:-9.66 S:17.35 W:-69.83
Temporal Extent: 2010-10-16 - 2011-12-10

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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.

Related Datasets

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Methods, Results

Holzer, M., Smethie, W. M., & Ting, Y.-H. (2018). Ventilation of the Subtropical North Atlantic: Locations and Times of Last Ventilation Estimated Using Tracer Constraints From GEOTRACES Section GA03. Journal of Geophysical Research: Oceans, 123(4), 2332–2352. doi:10.1002/2017jc013698

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Dataset: The fraction of water last ventilated in a given region in a time less than or equal to 39 years ago based on samples collected from R/V Knorr cruises KN199-04 and KN204-01 during 2010-2011

Final no updates expectedDOI: 10.26008/1912/bco-dmo.810838.1Version 1 (2020-05-07)Dataset Type:Cruise Results

Principal Investigator: William M. Smethie Jr. (Lamont-Doherty Earth Observatory)

Co-Principal Investigator, Contact: Mark Holzer (University of New South Wales)

Co-Principal Investigator: Yu-Heng Ting (University of New South Wales)

BCO-DMO Data Manager: Shannon Rauch (Woods Hole Oceanographic Institution)

Program: U.S. GEOTRACES (U.S. GEOTRACES)

Project: U.S. GEOTRACES North Atlantic Transect (GA03) (U.S. GEOTRACES NAT)

Project: U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT CFC and SF6)

Project: RAPID: Continuation of U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT RAPID CFC SF6)

Project: 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)

Abstract

Cite Dataset

Spatial Extent: N:39.70 E:-9.66 S:17.35 W:-69.83
Temporal Extent: 2010-10-16 - 2011-12-10

XXX

Views

XX

Downloads

X

Citations

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.

Related Datasets

No Related Datasets

Related Publications

Methods, Results

File(s)	Type	Description	Action
wmf_tau_le39yrs.csv (163.09 KB)	Comma Separated Values (.csv)	Primary data file for dataset ID 810838	Add to Cart Download
wmf_ages_bottleIDs_GA03.mat (279.73 KB)	MATLAB Data (.mat)	Water-mass fractions (wmf) are organized into 668x8 matrices: There are 668 bottle locations along section GA03 and the columns are the fraction of water last ventilated in one of 8 surface regions. This file contains the single matlab structure GA03, which has the following double-precision fields: field name size precision units --------------------------------------------------------- wmf_tau_all_yr [668×8 double] fraction of unity wmf_tau_all_yr_uncert [668×8 double] fraction of unity wmf_tau_le160yr [668×8 double] fraction of unity wmf_tau_le160yr_uncert [668×8 double] fraction of unity wmf_tau_le39yr [668×8 double] fraction of unity wmf_tau_le39yr_uncert [668×8 double] fraction of unity age_regional [668×7 double] years age_regional_uncert [668×7 double] years ideal_mean_age [668×1 double] years ideal_mean_age_uncert [668×1 double] years depth [668×1 double] m lat [668×1 double] degrees north lon [668×1 double] degrees east dist_east [668×1 double] km	Add to Cart Download

Supplemental File(s)	Type	Description	Action
GA03_transit-time_partitioned_water-mass_fractions_v2_README.pdf (328.76 KB)	Portable Document Format (.pdf)	README file for GA03 transit-time partitioned water-mass fractions datasets contributed by William M. Smethie Jr.	Add to Cart Download

File(s)	Type	Description	Action
wmf_tau_le39yrs.csv (163.09 KB)	Comma Separated Values (.csv)	Primary data file for dataset ID 810838	Add to Cart Download
wmf_ages_bottleIDs_GA03.mat (279.73 KB)	MATLAB Data (.mat)	Water-mass fractions (wmf) are organized into 668x8 matrices: There are 668 bottle locations along section GA03 and the columns are the fraction of water last ventilated in one of 8 surface regions. This file contains the single matlab structure GA03, which has the following double-precision fields: field name size precision units --------------------------------------------------------- wmf_tau_all_yr [668×8 double] fraction of unity wmf_tau_all_yr_uncert [668×8 double] fraction of unity wmf_tau_le160yr [668×8 double] fraction of unity wmf_tau_le160yr_uncert [668×8 double] fraction of unity wmf_tau_le39yr [668×8 double] fraction of unity wmf_tau_le39yr_uncert [668×8 double] fraction of unity age_regional [668×7 double] years age_regional_uncert [668×7 double] years ideal_mean_age [668×1 double] years ideal_mean_age_uncert [668×1 double] years depth [668×1 double] m lat [668×1 double] degrees north lon [668×1 double] degrees east dist_east [668×1 double] km	Add to Cart Download

Supplemental File(s)	Type	Description	Action
GA03_transit-time_partitioned_water-mass_fractions_v2_README.pdf (328.76 KB)	Portable Document Format (.pdf)	README file for GA03 transit-time partitioned water-mass fractions datasets contributed by William M. Smethie Jr.	Add to Cart Download

Dataset: The fraction of water last ventilated in a given region in a time less than or equal to 39 years ago based on samples collected from R/V Knorr cruises KN199-04 and KN204-01 during 2010-2011

Principal Investigator: William M. Smethie Jr. (Lamont-Doherty Earth Observatory)

Co-Principal Investigator, Contact: Mark Holzer (University of New South Wales)

Co-Principal Investigator: Yu-Heng Ting (University of New South Wales)

BCO-DMO Data Manager: Shannon Rauch (Woods Hole Oceanographic Institution)

Program: U.S. GEOTRACES (U.S. GEOTRACES)

Project: U.S. GEOTRACES North Atlantic Transect (GA03) (U.S. GEOTRACES NAT)

Project: U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT CFC and SF6)

Project: RAPID: Continuation of U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT RAPID CFC SF6)

Project: 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)

Abstract

ERDDAP

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Dataset: The fraction of water last ventilated in a given region in a time less than or equal to 39 years ago based on samples collected from R/V Knorr cruises KN199-04 and KN204-01 during 2010-2011

Principal Investigator: William M. Smethie Jr. (Lamont-Doherty Earth Observatory)

Co-Principal Investigator, Contact: Mark Holzer (University of New South Wales)

Co-Principal Investigator: Yu-Heng Ting (University of New South Wales)

BCO-DMO Data Manager: Shannon Rauch (Woods Hole Oceanographic Institution)

Program: U.S. GEOTRACES (U.S. GEOTRACES)

Project: U.S. GEOTRACES North Atlantic Transect (GA03) (U.S. GEOTRACES NAT)

Project: U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT CFC and SF6)

Project: RAPID: Continuation of U.S. GEOTRACES North Atlantic Section: CFC and SF6 Measurements (GT NAT RAPID CFC SF6)

Project: 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)

Abstract

ERDDAP

Metadata

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