Table 1.

Fraction of the Earth defined as pristine

MonthPristine Fraction
GlobalOceanLandNHSH
Jan0.27 (0.32)0.34 (0.40)0.09 (0.13)0.02 (0.06)0.53 (0.59)
Apr0.18 (0.25)0.21 (0.30)0.08 (0.12)0.00 (0.03)0.35 (0.46)
Jul0.05 (0.14)0.06 (0.16)0.02 (0.08)0.06 (0.15)0.04 (0.13)
Oct0.05 (0.11)0.07 (0.14)0.01 (0.05)0.03 (0.09)0.07 (0.13)
Annual0.12 (0.21)0.16 (0.26)0.02 (0.10)0.02 (0.08)0.22 (0.34)
  • Pristine defined as PI to PD CCN concentration ±20% and similar PI to PD CCN response to 28 parameters covering natural and anthropogenic emissions, processes and model structures. Values in parentheses show the fraction when the concentration change only is considered.