nutrients

 PI:             Patricia Wheeler
 dataset:        Nutrients
 project/cruise: EQPAC/TT008
 ship:           Thomas Thompson

 Methodology:  U.S. JGOFS Equatorial Pacific Process Study 
               Sampling and Analytical Protocols (section 13)

 DMO cautionary note:
 The PI has flagged the following samples as suspect, most likely due
 either to mistrip or leaking bottles:
        cast 13 bottles 2,3,4
        cast 15 bottles 2,3
        cast 64 bottles 1,2,3
        cast 68 bottles 1,2,3   


 Parameter    Description                                      Units
  
 event        event/operation number from event log, 
                composed of elements of date and time decoded
                as follows (MMDDHHmm) where MM = month, DD =
                day, HH = hour, mm = minutes.  Date/time 
                reported in local Hawaii time.
 sta          station number from event log
 cast         CTD cast number from event log
 date         date of observation decoded as follows (YYMMDD)
                YY = year, MM = month, DD = day.  Reported in
                local time. 
 bot          CTD rosette bottle number
 depth        sample depth                                     meters    
 nh4          ammonium                                         micromoles/liter
 no3          nitrate                                          micromoles/liter
 no2          nitrite                                          micromoles/liter
 po4          phosphate                                        micromoles/liter
 sio4         silicate                                         micromoles/liter


 'nd' indicates missing data