xco2air.txt (File 13)

This data file contains the underway measurements of�atmospheric xCO₂ made during R/V Meteor Cruise 36/1 in the North Atlantic Ocean. The data are presented in ASCII format and can be read by using the following FORTRAN 77 code [contained in xco2air.for (File 3)]:

     CHARACTER date*10, time*8, lab*1
     REAL latdcm, longdcm, xco2

     read (1, 10, end=999) date, time, latdcm, londcm, xco2, lab
   
 10  format (2X, A10, 4X, A8, 4X, F6.3, 4X, F7.3, 4X, F6.2, 
   1 3X, A1)

Stated in tabular form, the contents include the following:
     
-----------------------------------------------
Variable  Variable  Variable  Starting   Ending
            type     width     column    column
-----------------------------------------------     
date     Character    10          3        12
time     Character     8         17        24
latdcm    Numeric      6         29        34
londcm    Numeric      7         39        45
xco2      Numeric      6         50        55
lab      Character     1         59        59
-----------------------------------------------

The variables are defined as follows:

date	-	is the sampling date (day/month/year);
time	-	is the sampling time (GMT);
latdcm	-	is the latitude of the sampling location (decimal degrees; negative values indicate the Southern Hemisphere);
londcm	-	is the longitude of the sampling location (decimal degrees; negative values indicate the Western Hemisphere);
xco2	-	is the mole fraction of atmospheric CO₂ (ppmv) measured in dry air;
lab	-	is the laboratory identifier.