pco2_water

  PI:              Catherine Goyet
  dataset:         Partial pressure of CO2 in water, along ship track
  project/cruise:  Arabian Sea/TTN-049 - Process Cruise 4   
  ship:            Thomas Thompson

  Methods are described in:
  
  DOE (1994) Handbook of Methods for the Analysis of the Various
  Parameters of the Carbon Dioxide System in Sea Water; Version 2,
  A.G. Dickson and C. Goyet, eds. ORNL/CDIAC-74.  


  Parameter    Description                          Units

  year         of sampling
  yrday        day of year, reported in UTC time    decimal partial days
                for reference: 
                   Jan 1 noon     = 0.5
                   Jan 1 midnight = 1.0
  lat          Latitude (- for S)                   decimal degrees
  lon          Longitude (- for W)                  decimal degrees
  pCO2         Partial pressure of CO2 in water     micro atmospheres
  temp         Sea Surface Temperature              deg.C
  sal          Sea Surface Salinity                 PSU
  wind_sp      Wind Speed                           meters/sec
  press_bar    Barometric Pressure                  millibars
  
  nd indicates missing or bad data