The Back Trajectory Study for Selected Extreme Rainfall Events Over Iraq

Abstract The Precipitations conditions having special attention in the last decade due to their impact on human health, ecosystems and other aspects such as agriculture, hydrology. ECMWF ERA-Interim 15-hourly (00 15 UTC) total precipitations a 1° x grid covering Iraq, from 29° N 38° 39° W 48° E, with of 10 by cells, was used. At each point, extremes were defined those events which above 90 th percentile for 25 years period 1994-2019. aim this work is study precipitation cumulative extreme Iraq studying back trajectory pathway origin rejoin using Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model. 60% occurred during second decade. In all regions, there are important peaks 2006,2013,2014, 2016 2018 representing 40% perceptions events. back-trajectories rainfall associated advection air masses Red Sea Arabian Gulf most influential amount rain percentage saturation that reach Iraq. Mediterranean cyclone main source