a10pco2.for (File 4)

This file provides underway measurements of pCO₂ during R/V Meteor Cruise 22/5. Each line of the file contains a sampling date (month/date/year), latitude, longitude, underway measurements of sea surface temperature, salinity, air pCO₂, and water pCO₂. The file is sorted by longitude and can be read by using the following FORTRAN 77 code [contained in a10pco2.for (File 4)]:

           REAL jday, latdcm, londcm, sst, salt, airpre, airxco2
           REAL airpco2, waterpco2
           CHARACTER sect*3, date*10, time*5
    
           read (1, 10, end=999) sect, date, time, jul, latdcm, londcm, 
         1 sst, salt, pre, xco2, pco2a, pco2w
         
     10    format (3X, A3, 3X, A10, 3X, A5, 2X, F9.3, 1X, F7.2, 1X,
         1 F7.2, 1X, F7.2, 1X, F7.2, 1X, F7.1, 2X, F7.2, 3X, F7.1,
         2 3X, F7.1)

Stated in tabular form, the contents include the following:

Variable	Variabletype	Variablewidth	Startingcolumn	Ending column
sect	Character	3	4	2
date	Character	10	10	2
time	Character	5	23	18
jday	Numeric	9	30	18
latdcm	Numeric	7	40	27
londcm	Numeric	7	48	37
sst	Numeric	7	56	54
salt	Numeric	7	64	47
airpre	Numeric	7	72	54
airxco2	Numeric	7	81	61
airpco2	Numeric	7	91	54
watrpco2	Numeric	7	101	54

The variables are defined as follows:

sect	-	is the WOCE Section number;
date	-	is the sampling date (day/month/year);
time	-	is the sampling time (GMT);
jday	-	is the julian day of the century relative to 1900 with time of the day represented as a fractional day (i.e., noon on 1/1/1900 = 0.5);
latdcm	-	is the latitude of the sampling (in decimal degrees; negative values indicate the Southern Hemisphere);
londcm	-	is the longitude of the sampling (in decimal degrees; negative values indicate the Western Hemisphere);
sst	-	is the sea surface temperature (in °C);
salt	-	is the sea surface salinity (on the PSS);
airpre	-	is the atmospheric pressure (in atm);
airxco2	-	is the observed mole fraction of pCO₂ in air [in ppm (dry air)];
airpco2	-	is the air pCO₂ (in µatm);
waterpco2	-	is the sea surface water pCO₂ (in µatm).