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Advances in Meteorology
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2021
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Article
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Tab 2
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Research Article
Spatiotemporal Variations of Drought in the Arid Region of Northwestern China during 1950–2012
Table 2
Trend analysis and Sen + M-K trend analysis of the SPI, SPEI, and SC-PDSI.
Drought index
Propensity rate (/10 a)
Sen + M-K trend analysis
β
|Zc|
Trend
SPI
0.08
0.001 > 0
>1.96
↑
SPEI
0.07
0.001 > 0
>1.96
↑
SC-PDSI
0.19
0.002 > 0
>1.96
↑
∗
0.05 significance level.