tun1.dat (File 5)

This file provides hydrographic, CO2, and chemical data for the 123 stations occupied during the R/V Thomas Washington TUNES-1 Expedition. Each record contains a station number, cast number, sample number, bottle number, CTD pressure, CTD temperature, CTD salinity, CTD oxygen, potential temperature, bottle salinity, bottle oxygen, silicate, nitrate, nitrite, phosphate, CFC-11, CFC-12, 14C, 14C error, TCO2, TALK, 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 tun1dat.for (File 3): 


          CHARACTER qualt*14
          INTEGER sta, cast, samp, bot   
          REAL pre, ctdtmp, ctdsal, ctdoxy, theta, sal, oxy, silca
          REAL nitrat, nitrit, phspht, cfc11, cfc12, delc14, c14err
          REAL tcarb, talk

10       format (5X, I3, 7X, I1, 6X, I2, 5X, I3, 1X, F7.1, 1X, F7.4,
        1 1X, F7.4, 1X, F7.1, 1X, F7.4, 1X, F9.4, 1X, F7.1, 1X, F7.2,
        2 1X, F7.2, 1X, F7.2, 1X, F7.2, 1X, F8.3, 1X, F8.3, 1X, F7.1,
        3 1X, F7.1, 1X, F7.1, 1X, F7.1, 1X, A14)


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
7
42
48
ctdsalNumeric
7
50
56
ctdoxyNumeric
7
58
64
thetaNumeric
7
66
72
salNumeric
9
74
82
oxyNumeric
7
84
90
silicaNumeric
7
92
98
nitratNumeric
7
100
106
nitritNumeric
7
108
114
phsphtNumeric
7
116
122
cfc11Numeric
8
124
131
cfc12Numeric
8
133
140
delc14Numeric
7
142
148
c14errNumeric
7
150
156
tcarbNumeric
7
158
164
talkNumeric
7
166
172
qualtCharacter
14
174
187

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 (dbar);

ctdtmp - is the CTD temperature (°C);

ctdsala - is the CTD salinity (on the practical salinity scale);

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

theta - is the potential temperature (°C);

sala - is the bottle salinity;

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

silcaa - 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);

cfc11a - is the trichlorofluoromethane-11 (CCl3F) concentration (pmol/kg);

cfc12a - is the dichlorodifluoromethane-12 (CCl2F2) concentration (pmol/kg);

delc14a - is the radiocarbon 14C (per mille);

c14err - is the error of 14C (percent);

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

talka - is the total alkalinity (µmol/kg); and

qualt - is a 14-digit character variable that contains data-quality flag codes for 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 06/30/97