EX1016 Readme


Class of Data:  Surface ocean carbon dioxide concentrations

Dataset Identifier:  EX1016

Expocode: 33KF20100527

Statement of how to cite dataset:

     For information on dataset citation and more, please see Master Readme File.
     Explorer website: http://www.aoml.noaa.gov/ocd/gcc/explorer_introduction.php

Measurement platform identifier:  EX1016/Explorer

Data quality issues:

     Atmospheric pressures were not measured for JD 148.06-151.98 (28/May-31/May) 
     and calculated from Licor Pressure (Licor pressure - 4.7 hpa). The offset was 
     estimated using data collected from EX1016, EX1020, and EX1021 cruises.

     Seawater measurements for JD 148.21-149.17 (28/May 5:01-29/May 4:10) 
     were deleted due to low gas flow.

     Standard Gases and Reference Gas:  The three standard gases come from CMDL
     in Boulder and are directly traceable to the WMO scale.  The zero gas
     is a non-calibrated gas from a commercial company.  Any value outside the
     range of the standards should be considered approximate (5 ppm).
     While individual data points above 550 or below 300 may less accurate,
     the general trends should be indicative of the seawater chemistry.  
     The standards used on the cruise are:

      STANDARD       TANK #       CONCENTRATION     VENDOR
       STD1                          0.00         Commercial
       STD2         CA07952         549.89           CMDL
       STD3         CA02040         319.82           CMDL  
       STD4         CA02030         377.14           CMDL                 

     Units:  All xCO2 values are reported in parts per million (ppm) and fCO2
     values are reported in microatmospheres (uatm) assuming 100% humidity at the
     equilibrator temperature.


Contact person for this dataset:  

     Kevin Sullivan
     (305)361-4382
     Kevin.Sullivan@noaa.gov

Timestamp for dataset reduction:  12/13/2010

Timestamp for most recent update of dataset:  12/12/2012

Matlab version used for reduction: 1.08

Time period the dataset refers to:  5/27/2010 - 6/5/2010

Geographic area the dataset refers to:

   Day 1  - Bayonne, New Jersey (40.7 N / 74.1 W)
   Day 3  - Kings Wharf, Bermuda (32.3 N / 64.8 W)
   Day 5  - Philipsburg, St.Maarten (18 N / 63 W)
   Day 6  - Charlotte Amalie, St.Thomas (18.3 N / 64.9 W)
   Day 7  - San Juan, Puerto Rico (18.5 N / 66.1 W)
   Day 10 - Bayonne, New Jersey (40.7 N / 74.1 W)