TMctd

 PI:              John Morrison
 of:              North Carolina State University
 dataset:         Processed CTD data from TM casts
 project/cruise:  AESOPS/NBP-97-3 - Ross Sea Process Cruise 3
 ship:            Nathaniel B. Palmer

 Sampling Methodology

  PI-Note:  The CTD transmissometer, fluorometer, light scattering and
            PAR measurements are currently being calibrated by other
            investigators

 AESOPS Investigators, Please note:
  Begin and end parameters for time, latitude and longitude are
  provided in the core CTD and Bottle data.  Investigators  
  submitting data related to CTD/Bottle casts are urged to use 
  the single lat/lon entry from the Chief Scientist's event log.

 Parameter     Description                                  Units

 event         event number from event log
 sta           station number from event log
 cast          CTD rosette cast number from event log
 date          date (YYYYMMDD) decoded as follows
                 YYYY = year, MM = month, DD = day
                 Date converted to GMT.
 time_begin    starting time of cast in UTC                 decimal hours
 time_end      ending time of cast in UTC                   decimal hours
 lat_begin     starting latitude of cast, negative = south  decimal degrees
 lon_begin     starting longitude of cast, negative = west  decimal degrees
 lat_end       ending latitude of cast                      decimal degrees
 lon_end       ending longitude of cast                     decimal degrees
 depth         depth of sample                              meters
 press         depth of sample reported as pressure         decibars
 temp          temperature                                  degrees C
 cond          conductivity CTD                             millimohs
 sal           salinity
 potemp        potental temperture                          degrees C
 sigma_t       sigma t                                      kilograms/meter^3
 sigma_0       potental density                             kilograms/meter^3
 par           PAR (Irradience)                             uEinsteins/cm^2/sec
 nd            no/bad data