EX1220 Readme


Class of Data:  Surface ocean carbon dioxide concentrations

Dataset Identifier:  EX1220

Statement of how to cite dataset:

     Explorer website: http://www.aoml.noaa.gov/ocd/gcc/explorer_cruisetracks.php

     For more information on dataset citation please see Master Readme File.


Measurement platform identifier:  EX1220/Explorer

Data quality issues:

     STD1 analyses were not used in the calibration due to infrequent use.

     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 590 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              CA05988          593.64           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:  1//12

Timestamp for most recent update of dataset:  1//12

Matlab version used for reduction: 1.10

Time period the dataset refers to:  6/16/2012 - 6/21/2012

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 4  - Kings Wharf, Bermuda (32.3 N / 64.8 W)
   Day 6  - Bayonne, New Jersey (40.7 N / 74.1 W)