met18.dat (File 6)

This file provides hydrographic, carbon dioxide, and chemical data for the 61 stations occupied during R/V Meteor Cruise 18/1. Each line consists of a station number; cast number; sample number; bottle number; CTD pressure and temperature; potential temperature; reversing thermometer reading; CTD salinity; bottle salinity; concentrations of oxygen, silicate, nitrate, nitrite, phosphate, total carbon dioxide, and total alkalinity; and data quality flags. The file is sorted by station number and pressure and may be read by using the following FORTRAN 77 code [contained in met18dat.for (File 3)]:

            
            CHARACTER bot*3, qualt*10
            INTEGER sta, cast, samp
            REAL pre, ctdtmp, theta, revtmp, ctdsal, salt, oxygen, silcat
            REAL nitrat, nitrit, phspht, tcarb, talk
            OPEN (unit=1, file='met18.dat')
            OPEN (unit=2, file='met18.data')
            write (2, 5)
     
            read (1, 10, end=999) sta, cast, samp, bot, pre, ctdtmp,
          1 revtmp, ctdsal, theta, salt, oxygen, silcat, nitrat, nitrit,
          2 phspht, talk, tcarb, qualt
     
      10    format (5X, I3, 7X, I1, 6X, I2, 5X, A3, 2X, F6.1, 1X, F9.4,
          1 1X, F8.3, 2X, F9.4, 1X, F9.4, 1X, F9.4, 2X, F6.1, 1X, F7.2,
          2 1X, F7.2, 1X, F7.2, 1X, F7.2, 1X, F7.2, 1X, F7.1, 2X, A10)

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 Character 3 30 32

pre Numeric 6 35 40

ctdtmp Numeric 9 42 50

revtmp Numeric 8 52 59

ctdsal Numeric 9 61 69

theta Numeric 9 71 79

salt Numeric 9 81 89

oxygen Numeric 6 92 97

silcat Numeric 7 99 105

nitrat Numeric 7 107 113

nitrit Numeric 7 115 121

phspht Numeric 7 123 129

talk Numeric 7 131 137

tcarb Numeric 7 139 145

qualt Character 10 148 157

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	Character	3	30	32
pre	Numeric	6	35	40
ctdtmp	Numeric	9	42	50
revtmp	Numeric	8	52	59
ctdsal	Numeric	9	61	69
theta	Numeric	9	71	79
salt	Numeric	9	81	89
oxygen	Numeric	6	92	97
silcat	Numeric	7	99	105
nitrat	Numeric	7	107	113
nitrit	Numeric	7	115	121
phspht	Numeric	7	123	129
talk	Numeric	7	131	137
tcarb	Numeric	7	139	145
qualt	Character	10	148	157

where

sta - is the station number;

cast - is the cast number;

samp - is the sample number;

bot* - is the bottle number;

pre - is the CTD pressure (dbar);

ctdtmp - is the CTD temperature (^oC);

revtmp - is the reversing thermometer reading (^oC);

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

theta - is the potential temperature (^oC);

salt* - is the bottle salinity;

oxygen* - is the oxygen concentration (µ mol/kg);

silcat* - is the silicate concentration (µ mol/kg);

nitrat* - is the nitrate concentration (µ mol/kg);

nitrit* - is the nitrite concentration (µ mol/kg);

phspht* - is the phosphate concentration (µ mol/kg);

talk* - is the total alkalinity concentration (µ mol/kg);

tcarb* - is the total carbon dioxide concentration (µ mol/kg);

qualt - is a 10-digit character variable that contains data quality flag codes for parameters flagged by an asterisk (*) in the output file.

Quality flag definitions:

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 7/11/96