a10dat.txt (File 6)
This file provides hydrographic, carbon dioxide, and chemical data for the 112 stations occupied during R/V Meteor Cruise 22/5. Each line consists of a station number, cast number, bottle number, CTD pressure, CTD temperature, CTD salinity, potential temperature, bottle salinity, oxygen, silicate, phosphate, nitrate plus nitrite, CFC-11, CFC-12, total CO2, SOMMA number, total alkalinity, 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 a10dat.for (File 3)]:
CHARACTER qualt*11
INTEGER sta, cast, bot, pre, som
REAL ctdtmp, ctdsal, theta, sal, oxy, silca
REAL phspht, nitr, cfc11, cfc12, tcarb, talk
read (1, 10, end=999) sta, cast, bot, pre, ctdtmp,
1 ctdsal, theta, sal, oxy, silca, phspht, nitr,
2 cfc11, cfc12, tcarb, som, talk, qualt
10 format (5X, I3, 7X, I1, 5X, I3, 4X, I4, 1X, F7.4,
1 1X, F7.4, 1X, F7.4, 1X, F9.4, 1X, F7.1, 1X, F7.2,
2 1X, F7.2, 1X, F7.2, 1X, F8.3, 1X, F8.3, 1X, F7.1,
3 5X, I2, 1X, F7.1, 2X, A11)
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 |
| bot | Numeric | 3 | 22 | 24 |
| pre | Numeric | 4 | 29 | 32 |
| ctdtmp | Numeric | 7 | 34 | 40 |
| ctdsal | Numeric | 7 | 42 | 48 |
| theta | Numeric | 7 | 50 | 56 |
| sal | Numeric | 9 | 58 | 66 |
| oxy | Numeric | 7 | 68 | 74 |
| silca | Numeric | 7 | 76 | 82 |
| phspht | Numeric | 7 | 84 | 90 |
| nitr | Numeric | 7 | 92 | 98 |
| cfc11 | Numeric | 8 | 100 | 107 |
| cfc12 | Numeric | 8 | 109 | 116 |
| tcarb | Numeric | 7 | 118 | 124 |
| som | Numeric | 2 | 130 | 131 |
| talk | Numeric | 7 | 133 | 139 |
| qualt | Character | 11 | 142 | 152 |
The variables defined as follows:
| sta | - | is the station number; |
| cast | - | is the cast 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)]; |
| theta | - | is the potential temperature (in °C); |
| sala | - | is the bottle salinity (on the PSS); |
| oxya | - | is the oxygen concentration (in µmol/kg); |
| silcaa | - | is the silicate concentration (in µmol/kg); |
| phsphta | - | is the phosphate concentration (in µmol/kg); |
| nitra | - | is the nitrate plus nitrite concentration (in µmol/kg); |
| cfc11a | - | is the trichlorofluoromethane-11 concentration (CCl3F) (in pmol/kg); |
| cfc12a | - | is the dichlorodifluoromethane-12 concentration (CCl2F2) (in pmol/kg); |
| tcarba | - | is the total carbon dioxide concentration (in µmol/kg); |
| som | - | is the SOMMA number; |
| talka | - | is the total alkalinity concentration (in µmol/kg); |
| qualt | - | is a 11-digit character variable that contains data-quality flag codes for parameters underlined with asterisks (*******) in the file header. |
aVariables 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. |
