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Table 3 Past and projected atmospheric CO2 saturation (ppm), by IPCC scenario

From: Modeling some long-term implications of CO2 fertilization for global forests and forest industries

  IPCC scenario
Year A1B A2 B2
1970 325 325 325
1980 337 337 337
1990 353 353 353
2000 369 369 369
2006 382 382 380
2010 391 390 388
2020 420 417 408
2030 454 451 429
2040 491 490 453
2050 532 532 478
2060 572 580 504
2070 611 635 531
  1. Source: IPCC(2013)