Escalating Compound Drought‐Heatwaves and Demographic Shifts Threaten Simultaneous Global Breadbasket Failures

Abstract Compound drought and heatwave (CDHW) events pose a major threat to agricultural sectors worldwide. This study quantifies projected changes in the frequency, duration, and intensity of CDHW events across major breadbasket regions. Historical CDHW occurrences (1982–2019) are compared with future projections (2020–2095) derived from eight CMIP6 climate models under three Shared Socioeconomic Pathway scenarios. Results indicate significant increases in CDHW characteristics, particularly in