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8.2.45.14 octave.dataset.co2

Static Method: out = co2 ()

Mauna Loa Atmospheric CO2 Concentration

Description

Atmospheric concentrations of CO2 are expressed in parts per million (ppm) and reported in the preliminary 1997 SIO manometric mole fraction scale. Contains monthly observations from 1959 to 1997.

Format

date

Date of the month of the observation, as datetime.

co2

CO2 concentration (ppm).

Details

The values for February, March and April of 1964 were missing and have been obtained by interpolating linearly between the values for January and May of 1964.

Source

Keeling, C. D. and Whorf, T. P., Scripps Institution of Oceanography (SIO), University of California, La Jolla, California USA 92093-0220.

ftp://cdiac.esd.ornl.gov/pub/maunaloa-co2/maunaloa.co2.

References

Cleveland, W. S. (1993). Visualizing Data. New Jersey: Summit Press.

Examples

t = octave.dataset.co2;

plot (datenum (t.date), t.co2);
datetick ("x");
xlabel ("Time"); ylabel ("Atmospheric concentration of CO2");
title ("co2 data set");