Extended Data Fig. 9: The role of the Southern Hemisphere low cloud feedback (CFSH) on the future projection uncertainties.
a–d, CFSH versus the tropical Pacific triangular warming (a), the precipitation responses during the EA summer (b), WUS winter (c), and SEUS winter (d). Circle (cross) symbols indicate CMIP6 slow (total) response. The inserted texts indicate inter-model correlation coefficients, where the values in parentheses are calculated after excluding four CESM2 variant models with the highest CFSH (Supplementary Table 1). The symbols are color-coded from blue to red in ascending order of the CFSH. Black symbol indicates muti-model mean and empty (filled) green rectangle indicates the CESM1-CAM5 experiment in which the clouds are regionally locked (globally interactive). The vertical black line indicates the observational estimate of CFSH (Methods). Note that WUS winter is defined as November, December, January for CMIP6 slow response and as January, February, March for the cloud-locking experiment, when each signal is maximized.
