GC082-0015
Examining the drought characteristics and awareness using evapotranspiration-based drought indices (EDDI, SEDI, SPEI)

Monday, 14 December 2020
Poster
Won-Ho Nam, Hankyong National University, School of Social Safety and Systems Engineering, Institute of Agricultural Environmental Science, National Agricultural Water Research Center, Anseong, South Korea, Taegon Kim, University of Minnesota Twin Cities, Department of Bioproducts and Biosystems Engineering, Minneapolis, MN, United States and Michael J Hayes, University of Nebraska-Lincoln, School of Natural Resources, Lincoln, NE, United States
Abstract:
Drought is a complex phenomenon that is difficult to describe accurately because its definition is from various hydrological and meteorological parameters such as precipitation, evapotranspiration, runoff, and other water supplies. Recent drought-related studies have focused on evapotranspiration (ET) because it is coupled with atmospheric moisture demand and thus affects water availability on land surfaces. We have assessed the spatio-temporal patterns with evapotranspiration-based (ET-based) drought indices (Evapotranspiration Deficit Drought Index [EDDI], Standardized Evapotranspiration Deficit Index [SEDI], and Standardized Precipitation Evapotranspiration Index [SPEI]). We assess the likelihood of changes in the drought severity, duration, spatial extent, duration and number of occurrences of drought events using run theory and monitoring of drought awareness.
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