EX1003 Readme


Class of Data:  Surface ocean carbon dioxide concentrations

Dataset Identifier:  EX1003

Expocode: 33KF20100205

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:  EX1003/Explorer

Data quality issues:

     The instruments collected data during the 2.5-day steam from Haiti to New
     Jersey.  For the first half a day, the condensor was much warmer than its 
     normal operating temperature.  Significant water vapor was still removed by
     the Nafion dryer.

     No atmopsheric pressure was recorded. Atmospheric presssure was estimated 
     using constant offset (-5.1 +/- 0.18 hPa) from Licor pressure. The offset was 
     calculated from data collected for 12/Dec/2009 - 15/Dec/2009. 

     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:  5/16/11

Timestamp for most recent update of dataset:  5/16/11

Matlab version used for reduction: 1.09

Time period the dataset refers to:  2/5/2010 - 2/14/2010

Geographic area the dataset refers to:

   Day 1  - Bayonne, New Jersey (40.7 N / 74.1 W)
   Day 4  - San Juan, Puerto Rico (18.5 N / 66.1 W)
   Day 5  - Charlotte Amalie, St.Thomas (18.3 N / 64.9 W)
   Day 6  - Samana, Dominican Republic (19.2 N / 69.3 W)
   Day 7  - Labadee, Haiti (19.8 N / 72.2 W)
   Day 10 - Bayonne, New Jersey (40.7 N / 74.1 W)