cgc90.dat (File 5)

This file provides hydrographic, carbon dioxide, and nitrate data for the 63 stations occupied during R/V Malcolm Baldrige CGC-90 Cruise in the Southwest Pacific. Each line of the file consists of a station number, sample ID, CTD pressure, CTD temperature, potential temperature, CTD salinity, bottle salinity, sigma-t, sigma-theta, nitrate, total CO2, and data quality flags. The file is sorted by station number and pressure and can be read using the following FORTRAN 77 code [contained in cgc90dat.for (File 3)]:

            INTEGER  sta, samp, qcfl
            REAL pres, temp, theta, ctdsal, botsal, sigma, sigmat
            REAL no3, tco2
            read (1, 10,end=999) sta, samp, pres, temp, theta, ctdsal,
          1 botsal, sigma, sigmat, no3, tco2, qcfl
     10    format (7X,I2,4X,I5,3X,F6.1,3X,F6.3,3X,F6.3,3X,F6.3,1X,F8.3,
          1 3X,F6.3,3X,F6.3,1X,F8.3,2X,F7.1,7X,I3)

Stated in tabular form, the contents include the following:

VariableVariable
type
Variable
width
Starting
column
Ending
column
staNumeric
2
8
9
sampNumeric
5
14
18
presNumeric
6
22
27
tempNumeric
6
31
36
thetaNumeric
6
40
45
ctdsalNumeric
6
49
54
botsalNumeric
8
56
63
sigmaNumeric
6
67
72
sigmatNumeric
6
76
81
no3Numeric
8
83
90
tco2Numeric
7
93
99
qcflNumeric
3
107
109

where

sta is the station number;

samp is the sample number;

pres is the CTD pressure (in dbar);

temp is the CTD temperature (in oC);

theta is the potential temperature (in oC);

ctdsal is the CTD salinity (in PSS);

botsal* is the bottle salinity (in PSS);

sigma is sigma-theta (in sigma units);

sigmat is sigma-t (in sigma units);

no3* is the nitrate concentration (in µmol/kg);

tco2* is the total carbon dioxide concentration (in µmol/kg);

qcfl is a 3-digit variable that contains data quality flag codes for parameters flagged by an asterisk in the output file.

Quality flags definitions:
2 = Acceptable measurement;
3 = Questionable measurement;
5 = Not reported;
9 = Sample not drown for this measurement from this bottle.

akozyr 05/10/97