                ARCTIC TRITIUM DATA: 1973 - 1990               92/08/10
                             DOS DISK                                    
                                                                         
     The files on the floppy disk include only samples on which Cl4 or T (or
both) have been measured.  File format is DOS, as it comes on the IBM PC, as
ASCII characters.                                                        
     The data files (nnnnnnn.PLT) form integers of the actual numbers multi-
plied by FACTOR below.  Missing data are indicated by '-999'.            

Depth in "meters", unless ICE STATION (Sta = 998, 998) which are in CM
Depth of "-1" is a ICE station.  Depth of "-2" is a SNOW station.


BYTES   WIDTH   DATA, (right justified)                                 FACTOR
                                                                         
1-6     6       Station number. STA 999, 998 are ICE stations               1
7-12    6       Cast, Niskin bottle number                                  1
13-18   6       Depth in m (or cm if ICE station), or pressure in dB        1
                NOTE: -1 indicates ICE, -2 indicates SNOW
19-24   6       Potential temperature as det. by Bryden (1973)           1000
25-30   6       Salinity, in S-units, supplied by chief sci.             1000
31-36   6       Sigma Theta as det. by Millero and Poisson (1981)        1000
37-42   6       TU in old scale at time of sampling                      1000
43-48   6       Error, 1 Sigma, in TU                                    1000
49-54   6       O18 (when available), expressed in per mil (o/oo)        1000
55-60   6       dC13 (o/oo) vs PDB, of our CO2 preparations              1000
61-68   8       DC14 in internationally adopted scale                    1000
69-72   4       Gerard sampler #                                            1
73-78   6       Available (in situ temp, if applicable)                   -
79      1       CR                                                        -
80      1       LF                                                        -

     Files with attribute .LOC are station locations etc. as follows:         
                                                                              
BYTES  WIDTH    INFORMATION                                                   

 1-8    8       Station number
 9-16   8       Date, yrmoda                                                  
17-24   8       Bottom depth in meters                                        
25-32   8       Latitude degmin. North is positive                       
33-40   8       Longitude degmin. East is positive                       
41-78  38       Available                                                
79      1       CR                                                       
80      1       LF                                                       
                                                                         
                                                                         
     The Tritium Lab is responsible only for the TU, eTU,dC13 and DC14 data to
be accurate.  For up-to-date hydrography, TCO2, and other parameters, please
contact appropriate facility.
                                                                              
                                                                              
                                                                              
