Decreasing trend of tropical cyclone-induced ocean warming in recent decades

Abstract Tropical cyclones (TCs) can influence climate by pumping heat into the ocean, yet little is known about how TC-induced ocean uptake (OHU) has changed in recent decades. Based on reanalysis, we calculated OHU and found a significant decline of from 1982 to 2018. If all gain balanced poleward transport, approximately 15% peak transport would have been reduced during study period. The decreasing trend consistent with enhanced stratification, shallowed mixed layer depth cold wake size. reduction primarily occurs Northwest Pacific, where shortened TC lifespan contributes as well. Furthermore, might offset 28% upper warming subtropical Pacific.