ctdml

  PI:              William Broenkow
  of:              Moss Landing Marine Laboratory (MLML)
  dataset:         High resolution CTD and beam attenuation data
  project/cruise:  North Atlantic Bloom Experiment/119 legs 4 and 5, May 1989 
  ship:            R/V Atlantis II


  Methodology
  CTD and analytical procedures (Broenkow)  

  DMO note on calculated depth


  Parameter     Description                               Units

  year          year (as YYYY)                            dimensionless
  sta           station number from event log             dimensionless
  cast          cast number, numbered consecutively       dimensionless
                  within station, event log
  event         event number, from event log, a unique    dimensionless
                  number assigned to each sampling 
                  operation 
  lat           latitude, negative = south                decimal degrees
  lon           longitude, negative = west                decimal degrees
  depth         depth calculated from pressure            meters
  press         depth of sample reported as pressure      decibars
  temp          temperature IPTS-68                       degrees C
  sal           salinity as calculated from conductivity  dimensionless
                  PSS-78 scale
  O2            oxygen, from CTD unit                     milliliters/liter
  potemp        potental temperature, calculated by       degrees C
                  U.S. JGOFS DMO
  sigma_0       sigma theta, calculated by U.S. JGOFS     dimensionless
                  DMO                                
  beam_cp       beam attenuation coefficient due to       1/meter
                  particles