s4p.dat (File 5)

This file provides hydrographic, CO2, and chemical data for the 113 stations occupied during the R/VAkademik Ioffe Expedition along the WOCE Section S4P. Each record contains a station number; cast number; sample number; bottle number; CTD pressure, temperature, salinity, and oxygen; potential temperature; bottle salinity; concentrations of oxygen, silicate, nitrate, nitrite, phosphate, and TCO2; pCO2; pCO2 temperature; and data-quality flags. The file is sorted by station number and pressure and can be read by using the following FORTRAN 77 code [contained in s4pdat.for (File 3)]: 


          CHARACTER qualt*11
          INTEGER sta, cast, samp, bot   
          REAL pre, ctdtmp, ctdsal, ctdoxy, theta, sal, oxy, silca
          REAL nitrat, nitrit, phspht, tcarb, pco2, pco2tmp 
        
           read (1, 10, end=999) sta, cast, samp, bot, pre, ctdtmp,
        1 ctdsal, ctdoxy, theta, sal, oxy, silca, nitrat, nitrit,
        2 phspht, tcarb, pco2, pco2tmp, qualt

10       format (5X, I3, 7X, I1, 6X, I2, 6X, I2, 1X, F7.1, 1X, F9.4,
        1 1X, F9.4, 1X, F7.2, 1X, F9.4, 1X, F9.4, 1X, F7.1, 1X, F7.2,
        2 1X, F7.2, 1X, F7.2, 1X, F7.2, 1X, F7.1, 1X, F7.2, 1X, F7.2,
        3 1X, A11)


Stated in tabular form, the contents include the following:

VariableVariable
type		Variable
width		 Starting
column		Ending
column
staNumeric
3
6
8
castNumeric
1
16
16
sampNumeric
2
23
24
botNumeric
2
31
32
preNumeric
6
35
40
ctdtmpNumeric
9
42
50
ctdsalNumeric
9
52
60
ctdoxyNumeric
7
62
68
thetaNumeric
9
70
78
salNumeric
9
80
88
oxyNumeric
7
90
96
silicaNumeric
7
98
104
nitratNumeric
7
106
112
nitritNumeric
7
114
120
phsphtNumeric
7
122
128
tcarbNumeric
7
130
136
pco2Numeric
7
138
144
pco2tmpNumeric
7
146
152
qualtCharacter
11
154
164

where

sta - is the station number;

cast - is the cast number;

samp - is the sample number;

bota - is the bottle number;

pre - is the CTD pressure (in dbar);

ctdtmp - is the CTD temperature (in °C);

ctdsala - is the CTD salinity [on the Practical Salinity Scale (PSS)];

ctdoxya - is the CTD oxygen concentration (in µmol/kg);

theta - is the potential temperature (in °C);

sala - is the bottle salinity (PSS);

oxya - is the bottle oxygen concentration (in µmol/kg);

silcaa - is the silicate concentration (in µmol/kg);

nitrata - is the nitrate concentration (in µmol/kg);

nitrita - is the nitrite concentration (in µmol/kg);

phsphta - is the phosphate concentration (in µmol/kg);

tcarba - is the total carbon dioxide concentration (in µmol/kg);

pco2a - is the partial pressure of CO2 (in µatm and measured at pco2tmp);

pco2tmp - is the temperature of equilibration of the pCO2 samples in the equilibrator (in °C);

qualt - is an 11-digit character variable that contains data-quality flag codes for each of the eleven parameters underlined with asterisks (*) in the output file.

aVariables that are underlined with asterisks in the data file to indicate they have data-quality flags. Data-quality flags are defined as follows:

1 = sample for this measurement was drawn from water bottle but results of analyses were not received;
2 = acceptable measurement;
3 = questionable measurement;
4 = bad measurement;
5 = not reported;
6 = mean of replicate measurements;
7 = manual chromatographic peak measurement;
8 = irregular digital chromatographic peak integration;
9 = sample was not drawn for this measurement from this bottle.

akozyr 08/10/97