Index of /ftp/oceans/LDEO_Database/Version_2015

[ICO]NameLast modifiedSizeDescription

[DIR]Parent Directory  -  
[TXT]LDEO_Database_Metadata_V2015.csv17-Jun-2016 10:16 190K 
[   ]LDEO_Database_V2015.csv.zip19-Apr-2016 15:11 270M 
[IMG]LDEO_Database_V2015.jpg06-Apr-2016 13:44 167K 
[   ]NDP-088_V2015.pdf19-Apr-2016 15:39 617K 
[TXT]New_Cruise_LDEO_V2015_Meta.csv17-Jun-2016 10:15 54K 

Database should be cited as:

Takahashi, T., S.C. Sutherland and A. Kozyr. 2016. Global Ocean Surface Water Partial Pressure of CO2 Database: 
Measurements Performed During 1957-2015 (Version 2015). ORNL/CDIAC-161, NDP-088(V2015). Carbon Dioxide Information 
Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee, doi: 10.3334/CDIAC/OTG.NDP088(V2015).

Approximately 10.5 million measurements of surface water pCO2 made over the global oceans during 1957-2015 have been processed to make 
a uniform data file in this Version 2015. Measurements made in open oceans as well as in coastal waters are included. The data assembled 
include only those measured using equilibrator-CO2 analyzer systems, and have been quality-controlled based upon the stability of the 
system performance, the reliability of calibrations for CO2 analysis and the internal consistency of data.  We have added about 1.4 million 
data points comprised of 461 leg/cruise segments in this version.  A total of 200,000 of these were collected on the 5 ships in our current 
field program.  The remainders were added from various web sites for Volunteer Observation Ships (VOS) operated by various agencies.  Our 
ships operate primarily in high latitudes in both hemispheres and have built decades long records in these areas.  R/V Nathaniel B. Palmer’s 
system has been operating since 1995, and R/V Laurence M. Gould’s system since 2001. Combined with the other three ships including USCGC Healy, 
R/V Sikuliaq and R/V M. Langseth, our contribution to this database through many years exceeds 2.3 million records primarily for the polar and 
sub-polar seas. These data have been corrected for the time-lag between the ship’s intake port and the pCO2 system as described in the technical 
report by Takahashi and Sutherland (2015).

In order to allow re-examination of the data in the future, a number of measured parameters relevant to pCO2 in seawater are listed.  The overall 
uncertainty for the pCO2 values listed is estimated to be ± 2.5 μatm on the average.  The names and institutional affiliations of the contributors 
are listed in Table 1. The documentations for the previous versions (V1.0, V2007, V2008, V2009, V2010, 2011, V2012, V2013, and V2014) of our database 
are available at CDIAC