The Climate State may Tip at 1.5 or 2 C of Global Temperature Rise

These results indicate that climate tipping is an imminent risk in the Earth System. Even the safe operating space of 1.5 or 2.0 degrees above present generally assumed by the IPCC might not be all that safe. According to the precautionary principle, we must consider abrupt and irreversible changes to the climate system as a real risk – at least until we understand these phenomena better.

James Hansen: May 2021 Global Temperature Update

12-month global temperature should reach minimum near +1.1C in late 2021. Maximum at next El Nino is likely to be near +1.5C due to rising CO 2 , CH 4 , N 2 O, solar irradiance and Earth’s energy imbalance.