Consistent Pattern of Rainfall Asymmetry in Binary Tropical Cyclones

Abstract The rainfall distribution in a tropical cyclone (TC) is affected by many factors/processes. Most of previous studies have focused on individual TCs. Little known about the binary This study examines TCs over western North Pacific based observational data. When two become nearby, asymmetric component shows an increasing trend with significantly suppressed Quadrant IV TC located to west when orienting west‐east direction. suppression becomes remarkable once separation distance between within 2,050 km. Furthermore, convective activity one related deep‐layer vertical wind shear (VWS) from its companion. Rainfall enhanced downshear‐left TC, consistent single embedded environmental VWS as found studies.