CMIP6 is the the Sixth Phase of Coupled Model Intercomparison Projects. CMIP aim to better understand changes in past, present, and future climate under different anthropogenic and radiative forcing. CMIP6 integrate new socioeconomic scenarios in climate projections. The socioeconomic scenarios include presence/absence of climate change policies, such as adaptation and mitigations measures (Eyring et. al 2016).
Eyring, Veronika, Sandrine Bony, Gerald A. Meehl, Catherine A. Senior, Bjorn Stevens, Ronald J. Stouffer, and Karl E. Taylor. 2016. “Overview of the Coupled Model Intercomparison Project Phase 6 (CMIP6) Experimental Design and Organization.” Geoscientific Model Development 9 (5): 1937–58. https://doi.org/10.5194/gmd-9-1937-2016.