EX0935 Readme


Class of Data:  Surface ocean carbon dioxide concentrations

Dataset Identifier:  EX0935

Expocode: 33KF20091010

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:  EX0935/Explorer

Data quality issues:

     At the end of the cruise, the salinity was not recorded during some air analyses.
     For these analyses between 14:20 and 14:30 on 14 October a salinity value of 25
     was assigned for data processing.

     Standard Gases and Reference Gas:  The three standard gases come from CMDL
     in Boulder and are directly traceable to the WMO scale.  The reference 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 460 or below 300 may
     not be 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              CA02020          458.04           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)361-4441
     Kevin.Sullivan@noaa.gov

Timestamp for dataset reduction:  12/17/09

Timestamp for most recent update of dataset:  12/17/09

Matlab version used for reduction: 1.05

Time period the dataset refers to:  10/10/2009 - 10/15/2009

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)