Toarcian extreme warmth led to tropical cyclone intensification

摘要: Abstract Models predict that tropical cyclone intensity should increase on a warming planet. Observing this relationship remains, however, difficult task since no clear trend is yet emerging from the anthropogenic record. The geological past offers opportunity to study by looking at episodes of extreme warmth, such as Toarcian Oceanic Anoxic Event (T-OAE, Early Jurassic, ca. 181 Ma). In study, we document an in occurrence storm-related deposits during onset T-OAE tide-dominated High Atlas Basin Morocco, associated with drastic deepening mean storm weather wave base. palaeolatitude (18° North Jurassic) rules out winter storms driving mechanism behind formation these and points dramatic intensification global warming. These new results, combined previously reported ubiquitous appearance seas western Tethyan area, support concept globally averaged cyclones will coming century due climate change.