Validating commonly used drought indicators in Kenya
نویسندگان
چکیده
Abstract Drought is a complex natural hazard that can occur in any climate and affect every aspect of society. To better prepare mitigate the impacts drought, various indicators be applied to monitor forecast its onset, intensity, severity. Though widely used, little known about efficacy these which restricts their role important decisions. Here, we provide first validation 11 commonly-used drought by comparing them pasture browse condition data collected on ground Kenya. These ground-based an absolute relative assessment conditions, similar some indicators. Focusing grass shrublands arid semi-arid lands, demonstrate there are strong relationships between satellite-based The soil adjusted vegetation index has best relationship, achieving mean r 2 score 0.70 when fitted against condition. Similarly, 3-month health reached 0.62 In addition, investigated Kenya-wide onset threshold for average (VCI3M; VCI3M < 35), used country’s early warning system. Our results show large disparities thresholds across different counties. Understanding integral developing effective efficient systems. work offers evidence effectiveness as well practical use.
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ژورنال
عنوان ژورنال: Environmental Research Letters
سال: 2021
ISSN: ['1748-9326']
DOI: https://doi.org/10.1088/1748-9326/ac16a2