GC23A-1127
When Does a Flood Event Occur? – A Data-driven Analysis on the Seasonality of Floods over the Contiguous United States
Tuesday, 15 December 2015
Poster Hall (Moscone South)
Jiali Guo, Organization Not Listed, Washington, DC, United States; China Three Gorges University, Yichang, China
Abstract:
This data-driven study investigates the timing of annual maximum floods (AMFs) expressed in terms of the seasonality index of AMF. Based on the analysis on 235 natural catchments over the contiguous United States, it is found that 1) at most of the catchments, the seasonality of AMF is stronger in drier years than in wetter years; 2) the seasonality of AMF is stronger when precipitation and potential evapotranspiration are out of phase, followed by no phase and in-phase; 3) the seasonality of AMF is closely related to the seasonal water balance only when the latter is strong enough.
