Understanding the Dominant Moisture Sources and Pathways of Summer Precipitation in the Southeast Prairie Pothole Region

Summer rainfall in the southeast Prairie Pothole Region (SEPPR) is an important part of a vital wetland ecosystem that various species use as their habitat. We examine sources and pathways for summer moisture, large-scale features influencing moisture delivery, connections related to using Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model. Analysis HYSPLIT back trajectories shows land primary source events indicating recycling plays role precipitation generation. The Great Plains Low-Level Jet/Maya Express most prominent pathway. It impacts sourced by Gulf Mexico (GoM), secondary source. There coupling between land, atmosphere, ocean conveyed climate sea surface temperature (SST), Palmer Drought Severity Index, 850-mb heights. Land-sourced have connection northern Pacific northwest Atlantic Oceans, soil over central U.S., low-pressure systems SEPPR. GoM-sourced share U.S. but also show SSTs North Oceans GoM, Mexico, heights eastern Ocean. Both types high Caribbean which may reflect Bermuda High. These insights into can improve skill SEPPR predictions benefit natural resource managers region.