by N. Scafetta, Feb 2024, in GeoscienceFrontier

• Highlights

  The IPCC AR6 assessment of likely impacts and risks by 21st-century climate changes is highly uncertain.

  • Most climate models, however, run too hot, and the SSP3-7.0 and SSP5-8.5 scenarios are unlikely.

  • New climate change projections for the 21st century were generated using best-performing climate models,

  • Empirical climate modeling of natural cycles, and calibration on lower troposphere temperature data.

  • Net-zero emission policies are not necessary because SSP2-4.5 is sufficient to limit climate change hazards to manageable levels

  • …