evidence: In the NZE, CO2 emissions are net zero in 2050 globally and there are rapid reductions in all non-CO2 emissions (such as methane). The rise in temperature reaches a maximum level of just over 1.5 °C around 2050. The temperature then starts to decline slowly as a result of continued reductions in non-CO2 emissions, and by 2100 the rise in temperature has fallen to around 1.4 °C. In the SDS, CO2 emissions drop to zero around 2070 and there are rapid reductions in non‑CO2 emissions. The 1.5 °C level is exceeded in the early 2030s and the rise in temperature peaks at just under 1.7 °C around 2050.4 The SDS is in line with the Paris Agreement objective of "holding the increase in the global average temperature to well below 2 °C", while the NZE goes further to be in line with the Paris Agreement objective of "pursuing efforts to limit the temperature increase to 1.5 °C". [...] All scenarios in the WEO-2021 have a similar temperature rise over the 2021-2030 period and a similar year in which 1.5 °C warming is exceeded. This results from a balance between reductions in emissions of gases that have a large near-term warming effect on the climate (such as methane) and reductions in aerosols and gases that have a large near-term cooling effect on the climate (such as sulphur dioxide).