Fig. 5: Increasing summer rain variability.

Jeannie River summer rainfall variability (51-yr running standard deviation, purple line) increased from the mid-18th century to 21st century as global temperature (black line) increased67. Blue line is the multi-proxy rainfall reconstruction of DJFMA total rainfall 1746–1984 with 1-σ uncertainty; rainfall after 1984 is instrumental (green). Red line: surface temperature at Jeannie River (HadCRUT5, 5-yr mean, 1900–2020)36.