p10pco2a.txt (File 8)

This file provides underway measurements of pCO2 in air during the R/V Thomas G. Thompson cruise along WOCE Section P10. Each line of the file contains a section number, sampling year, julian date (GMT), latitude, longitude, underway measurements of sea surface temperature, salinity, atmospheric pressure, air pCO2, and quality flag. The file is sorted by julian date and can be read by using the following FORTRAN 90 code [contained in p10pco2a.for (File 4)]:

            CHARACTER sect*8
            INTEGER year, qflag
            REAL jdate, latit, longit, surtmp, sursal, atmpre, xco2a
            read (1, 10, end=999) sect, year, jdate, latit, longit,  
          1 surtmp,sursal, atmpre, xco2a, qflag
      10    format (1X, A8, 2X, I4, 2X, F7.3, 2X, F7.3, 2X, F7.3, 2X, 
          1 F7.4, 2X, F7.4, 2X, F6.4, 2X, F7.3, 1X, I1)

Stated in tabular form, the contents include the following:

Variable Variable type Variable width Starting column Ending column
sect Character 8 2 9
year Numeric 4 12 15
jdate Numeric 7 18 24
latit Numeric 7 27 33
longit Numeric 7 36 42
surtmp Numeric 7 45 51
sursal Numeric 7 54 60
atmpre Numeric 6 63 68
xco2a Numeric 7 71 77
qflag Numeric 1 79 79

The variables are defined as follows:

sect  -  is the WOCE Section number;
year  -  is the sampling year;
jdate  -  is the julian day of the year;
latit  -  is the latitude of the sampling (in decimal degrees; negative values indicate the Southern Hemisphere);
longit  -  is the longitude of the sampling (in decimal degrees; negative values indicate the Western Hemisphere);
surtmp  -  is the sea surface temperature (°C);
sursal  -  is the sea surface salinity (on the PSS);
atmpre  -  is the atmospheric pressure (atm);
xco2a  -  is the observed mole fraction of CO2 in air [ppm (dry air)];
qflag  -  is the quality flag of xco2a:
2 = acceptable measurements of xco2a;
3 = questionable measurements of xco2a.

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