 Levels of unfamiliarity of wetter and drier climates, classified in terms of the ratio of the signal S of change to the noise N of variability, where the latter is defined as one standard deviation in annual data with the trend removed, that is, occurs approximately one in 6 years. Grey regions are either unobserved  or deserts . Stippling indicates where the signal of change is not significant. See Hawkins et al.  for further details.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report