nutrients

  PI:              Christopher Garside
  of:              Bigelow Laboratory for Ocean Science
  dataset:         Nutrient pump observations merged w/ MLML CTD data
  ship:            R/V Atlantis II
  project/cruise:  North Atlantic Bloom/119 leg 5, May 1989

  PI-Notes (Garside)

  DMO Note:
     These data are presented as received from Chris Garside.  
     However, we suggest that you use the MLML CTD data within 
     this file with CAUTION.  It is unclear whether values in
     this file are the final calibrated version of the CTD data.  
     We therefore recommend using the CTD data as supplied by 
     Moss Landing Marine Laboratory (MLML). 


  Parameter     Description                            Units
 
  sta           station number from event log          dimensionless   
  cast          cast number, numbered consecutively    dimensionless
                  within station, from event log
  event         event number from event log            dimensionless
  year          year reported as YYYY                  dimensionless
  lat           latitude, minus equals South           degrees
  lon           longitude, minus equals West           degrees
  depth_n       nominal sample depth                   meters
  sal           salinity (from MLML CTD)               dimensionless 
  temp          temperature (from MLML CTD)            degrees C
  sigma_t       sigma-t (calculated by Garside)
  NH4_umol_kg   ammonium                               micromoles/kilogram
  NO3_umol_kg   nitrate                                micromoles/kilogram
  NO2_umol_kg   nitrite                                micromoles/kilogram
  PO4_umol_kg   phosphate                              micromoles/kilogram
  Urea_umol_kg  urea                                   micromoles N/kilogram
  O2            oxygen (from MLML CTD)                 milliliters/liter
  beam_cp       beam attenuation coefficient due to    1/meter
                  particles (from MLML CTD)           
  fluor_re      rescaled fluorescense (numerically     micrograms chl_a/liter
                  equivalent to chlorophyll-a), (from  
                  MLML CTD)