SCIENCEsciencemag.org 25 SEPTEMBER 2020•VOL 369 ISSUE 6511 1623
Fig. 2. Projected changes
in return periods of the
seven attributed prominent
MHWs under different
global warming levels.
(AtoC) Point estimates
(red dots) and 95% confidence
intervals (gray bars) of the
return periods of MHWs as
long as observed (A), as
intense as observed (B), or
exhibiting as much cumulative
intensity as observed (C)
under different levels of global
warming. The return periods
are calculated by inverting
the probability of heatwave
occurrence (materials
and methods).
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