a5.dat

a5.dat (File 5)


This file provides hydrographic, carbon dioxide, and chemical data for the 112 stations occupied during the R/V Hespérides cruise along WOCE Section A5. Each line consists of a station number, cast number, sample number, bottle number, CTD pressure, CTD temperature, CTD salinity, CTD oxygen, potential temperature, bottle salinity, oxygen, silicate, nitrate, nitrite, phosphate, total alkalinity, total CO2, pH at 25°C, 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 a5dat.for, File 3):


  
       CHARACTER qualt*12
       INTEGER sta, cast, samp, bot
       REAL pre, ctdtmp, ctdsal, ctdoxy, theta, sal, oxy, silca
       REAL nitrat, nitrit, phspht, talk, tcarb, ph 

       read (1, 10, end=999) sta, cast, samp, bot, pre, ctdtmp,
     1 ctdsal, ctdoxy, theta, sal, oxy, silca, nitrat, nitrit,
     2 phspht, talk, tcarb, ph, qualt

 
 10    format (5X, I3, 7X, I1, 6X, I2, 6X, I2, 1X, F7.1, 1X, F7.4,
     1 1X, F7.4, 1X, F8.3, 1X, F7.4, 1X, F9.4, 1X, F7.1, 1X, F7.2,
     2 1X, F7.2, 1X, F7.2, 1X, F7.2, 1X, F7.1, 1X, F7.1, 1X, F8.3, 
     3 1X, A12)


Stated in tabular form, the contents include the following:

Variable Variable
type		 Variable
width		 Starting
column		 Ending
column
sta Numeric 3 6 8
cast Numeric 1 16 16
samp Numeric 2 23 24
bot Numeric 2 31 32
pre Numeric 7 34 40
ctdtmp Numeric 7 42 48
ctdsal Numeric 7 50 56
ctdoxy Numeric 8 58 65
theta Numeric 7 67 73
sal Numeric 9 75 83
oxy Numeric 7 85 91
silica Numeric 7 93 99
nitrat Numeric 7 101 107
nitrit Numeric 7 109 115
phspht Numeric 7 117 123
talk Numeric 7 125 131
tcarb Numeric 7 133 139
ph Numeric 8 141 148
qualt Character 12 150 161

The variables are defined as follows:

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 (dbar);
ctdtmp is the CTD temperature (°C);
ctdsala is the CTD salinity [on the Practical Salinity Scale (PSS)];
ctdoxya is the CTD oxygen (µmol/kg);
theta is the potential temperature (°C);
sala is the bottle salinity (on the PSS);
oxya is the oxygen concentration (µmol/kg);
silicaa is the silicate concentration (µmol/kg);
nitrata is the nitrate concentration (µmol/kg);
nitrita is the nitrite concentration (µmol/kg);
phsphta is the phosphate concentration (µmol/kg);
talka is the total alkalinity concentration (µmol/kg);
tcarba is the total carbon dioxide concentration (µmol/kg);
pHa is the pH at 25°C
qualt is a 12-digit character variable that contains data-quality flag codes for parameters underlined with asterisks (*******) in the file header.


a Variables that are underlined with asterisks in the data file's header indicate they have a data-quality flag. Data-quality flags are defined as follows:
1 = sample for this measurement was drawn from water bottle but analysis was 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 not drawn for this measurement from this bottle.

akozyr 06/2000