NH51E-1939
Moisture Transport and Extreme Precipitation in Mid-latitudes
Friday, 18 December 2015
Poster Hall (Moscone South)
David J Farnham1, Upmanu Lall2, Hyun-han Kwon3 and James Doss-Gollin1, (1)Columbia University of New York, New York, NY, United States, (2)Columbia University of New York, Palisades, NY, United States, (3)Chonbuk National University, Jeonju, South Korea
Abstract:
Associations between mid-latitude precipitation and long-distance moisture transport, particularly influxes from the tropics and sub-tropics, are becoming increasingly recognized. However, moisture sources associated with sub-weekly extreme precipitation and flooding events in the mid-latitudes have yet to be fully assessed and statistically modeled. We use the Hybrid Single Particle Integrated Trajectory Model to analyze backwards Lagrangian trajectories conditional on the occurrence of extreme rainfall. We diagnose the moisture sources of flood events in locations of the United States and South Korea. The influence of underlying atmospheric fields and the potential for predictive modeling of extreme rainfall occurrence is also discussed.
