Where does the moisture for North Atlantic tropical cyclones come from?

Abstract In this study, we identified the origin of moisture associated with tropical cyclones (TCs) precipitation in North Atlantic Ocean basin during their three well-differentiated life stages between 1980 and 2018. The HURDAT2 database was used to detect location 598 TCs genesis, maximum intensification peak, dissipation phases. global outputs Lagrangian FLEXPART model were then determine sources. Using a K-means cluster analysis technique, seven different regions as most common locations for genesis intensity TC phases, while six found points. Our results showed that precipitating not entirely local over areas occurrence. north Inter Tropical Convergence Zone at 10°N (NATL) -especially from latitudes, Caribbean Sea Gulf Mexico- provides (?87%). southward ITCZ (SATL) played non-negligible role (?11%), its contribution being pronounced phase, eastern Pacific made smallest (?2%). supported by varied depending on category, higher hurricanes than major or storms. Additionally, approach permitted estimate mean residence time water vapour uptake produce activity, which ranged 2.6 2.9 days.