N15_uptake

 PI:              James J. McCarthy
 dataset:         N-15 uptake rates, profile data, for 
                             substrates of NO2, NO3, NH4
 project/cruise:  Arabian Sea/TTN-043 - Process Cruise 1   
 ship:            Thomas Thompson
 
 Note from PI dated 6/30/97:
     Profile uptake rates contain computational corrections
     in several places (June 1997).

 Samples were obtained with the trace metal-clean rosette

 Documentation Revised 09/10/1999:

 Methodology:  McCarthy, J.J., C. Garside, and J.L. Nevins. (1999) Nitrogen
              Dynamics during the Arabian Sea Northeast Monsoon. Deep-Sea
              Research II 46 (1999) 1623-1664.

 Due to the strong diel patterns in nitrogen uptake and the resulting
 possible misinterpretation of these profile data through simple integration
 and daily mulitpliers, the user community is directed to the areal summary data.

  Parameter    Description                                 Units

  event        event number, from event log
  sta          station number, from event log
  sta_std      Arabian Sea standard station identifier
  cast         cast number, from event log, 
                   consecutive within station
  TM_num       Trace metal (TM) clean rosette cast 
                   number
  depth        sample depth (corrected wire out)           meters
  pNO2         N-15 uptake rate for NO2 labeled            nanomoles N/kg/hr
                    substrate
  pNO3         N-15 uptake rate for NO3 labeled            nanomoles N/kg/hr
                    substrate
  pNH4         N-15 uptake rate for NH4 labeled            nanomoles N/kg/hr
                    substrate