The evolution of DEDI using various time windows reflects that the drought event experienced two stages (IMAGE)

Science China Press

The evolution of DEDI using various time windows reflects that the drought event experienced two stages

Caption

Daily evolutions of (a) the original DEDI values, (b–d) DEDI values after being smoothed over 7, 15, and 31 days, (e) the 31-day smoothed SPEI values, and (f) MCI, averaged over the typical arid region of southwest China (21–26.2° N, 98.3–103.6° E) from 16 March to 15 September 2019. The gray dashed lines indicate the two drought peaks detected by DEDI in May and August. Results indicate that DEDI characterized the spatiotemporal evolution of the regional drought reasonably well and was superior in depicting the onset and cessation of the drought events, as well as multiple drought intensity peaks. Figure credit: Xia Zhang.

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