A global daily evapotranspiration deficit index dataset for quantifying drought severity from 1979 to 2022.

ABSTRACT: Droughts cause multiple ecological and social damages. Drought indices are key tools to quantify drought severity, but they are mainly limited to timescales of monthly or longer. However, shorter-timescale (e.g., daily) drought indices enable more accurate identification of drought characteristics (e.g., onset and cessation time) and help timely potential mitigation of adverse effects. Here, we propose a dataset of a daily drought index named daily evapotranspiration deficit index (DEDI), which is produced for global land areas from 1979 to 2022 using actual and potential evapotranspiration data. Validation efforts show that the DEDI dataset can well identify dry and wet variations in terms of spatial patterns and temporal evolutions when compared with other available drought indices on a

SUBMITTER: Zhang X 

PROVIDER: S-EPMC10673942 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature