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Dataset: Water Mass Fractions - 39 yrs

DOI:10.26008/1912/bco-dmo.810838.1
Spatial Extent: N:39.701 E:-9.662 S:17.351 W:-69.827
Temporal Extent: 2010-10-16 - 2011-12-10
Project: 
Program: 
U.S. GEOTRACES (U.S. GEOTRACES)
Principal Investigator: 
William M. Smethie Jr. (Lamont-Doherty Earth Observatory, LDEO)
Co-Principal Investigator: 
Mark Holzer (University of New South Wales, UNSW)
Yu-Heng Ting (University of New South Wales, UNSW)
Contact: 
Mark Holzer (University of New South Wales, UNSW)
BCO-DMO Data Manager: 
Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)
Version: 
1
Version Date: 
2020-05-07
Restricted: 
No
Validated: 
Yes
Current State: 
Final no updates expected

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
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.

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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.

Data Files
File
Matlab structure containing GA03 water-mass fraction data
filename: wmf_ages_bottleIDs_GA03.mat
(MATLAB Data (.mat), 279.73 KB)
MD5:b1c644f9f0726e2c8e6b5d453be80293
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
wmf_tau_le39yrs.csv
(Comma Separated Values (.csv), 163.09 KB)
MD5:9ef24692cdd70af650bbe251d26c3ea6
Primary data file for dataset ID 810838
Supplemental Files
File
README file for GA03 transit-time partitioned water-mass fractions datasets
filename: GA03_transit-time_partitioned_water-mass_fractions_v2_README.pdf
(Portable Document Format (.pdf), 328.76 KB)
MD5:b190a3a2811f95658ad399cf907c8283
README file for GA03 transit-time partitioned water-mass fractions datasets contributed by William M. Smethie Jr.
More Information about this dataset