115k, 3M, 20M, 34M, 56M or 200M years ago?
More important is the rate of increase of CO2 in the atmosphere during the last few decades.
Biggest rate in about 420M years!
100-yr GWP: 584 ppm (99+65+420)
20-yr GWP: 674 ppm (89+165+420)
10-yr GWP: 710 ppm (83+207+420)
This means anomalous local CO2 equivalents:
1063 ppm (100-year GWP factors)
1885 ppm (20-year GWP factors)
2231 ppm (10-year GWP factors)
100 times higher than what we agreed in the #ParisAgreement
#negativeemissions best within 365 days (500% reduction)
@antonioguterres @PEspinosaC @UNFCCC @EU_Commission