N15_uptake

 PI:              William Cochlan and Deborah Bronk
 of:              San Francisco State University (Cochlan),
                         University of Georgia (Bronk)
 dataset:         N-15 absolute uptake rates
 project/cruise:  AESOPS/NBP97-8, Ross Sea Process 4 cruise
 ship:            Nathaniel B. Palmer

 Methodology


 Parameter     Description                               Units

 event         event number from event log
 sta_name      unique station identifier
 sta           station number from event log
 cast          rosette cast number from event log
 cast_type     CTD = CTD rosette
               TM = Trace Metal rosette
 bot           rosette bottle number
 depth_n       nominal sample depth                      meters
 pNH4_uncorr   ammonium uptake rate, uncorrected for     micromoles N/liter/day
                  isotope dilution effect  
 pNH4          ammonium uptake rate; corrected           micromoles N/liter/day
 pNO3          nitrate uptake rate                       micromoles N/liter/day
 pUrea         urea uptake rate                          micromoles N/liter/day
 pNO2          nitrite uptake rate                       micromoles N/liter/day