aCO2_inverse {growR} | R Documentation |
Inverse of 'atmospheric_CO2': retrieve the year by which a given CO2 concentration is reached.
aCO2_inverse(aCO2)
aCO2 |
Target CO2 concentration in ppm. |
Does not give a reasonable result for values below 317ppm, corresponding to the year 1949, as this is where the minimum of the parabola is located in the second order fit to the data that was used in aCO2.fct.
year Approximate year (as floating point number) by which target concentration is reached.
aCO2_inverse(420)
aCO2_inverse(700)
# Insensible
aCO2_inverse(100)