Marine heatwaves (MHWs) and total heat exposures (THEs) are extreme warming events threatening marine ecosystems. This study uses CMIP6 climate simulations to project future changes in Arctic MHWs and THEs. Results show intensification of both, primarily due to sea ice decline and long-term warming. The projected rise in MHW mean intensity in the Arctic surpasses the global average by more than sevenfold under the SSP585 scenario, highlighting a disproportionate threat to Arctic marine life.

Yan He, Qi Shu, Qiang Wang, Zhenya Song, Min Zhang, Shizhu Wang, Lujun Zhang, Haibo Bi, Rongrong Pan, Fangli Qiao