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Comprehensive assessment of drought from 1960 to 2013 in China based on different perspectives

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Abstract

Using daily and monthly precipitation data collected from 520 meteorological stations from 1960 to 2013, we compared a widely used drought index, the standardized precipitation index (SPI), with an extreme index, the maximum consecutive dry days index (CDD). Two other homogeneity test methods, namely the Gini coefficient (including both Total-Gini and Wet-Gini) and the precipitation concentration degree (PCD) were also applied to indirectly estimate extreme droughts. The changes in droughts determined using the SPI and the CDD exhibited similar spatial and temporal patterns throughout most parts of China, with the exception of Southwestern China. Comparison of the five indices indicated that Wet-Gini exhibited different or even opposite trends of drought across all of China. Finally, a trend analysis from 2000 to 2013 was applied to perform a regional empirical analysis of a classic extreme drought event in Southwestern China. All indices, except for Wet-Gini, indicated increasing drought risk.

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Funding

This study was supported by the National Natural Science Foundation of China (Grant Nos. 51479003 and 51279006) and the Special Fund for Research on Public Interests (Grant No. 201401036).

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Correspondence to Hongrui Wang.

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Lai, W., Wang, H. & Zhang, J. Comprehensive assessment of drought from 1960 to 2013 in China based on different perspectives. Theor Appl Climatol 134, 585–594 (2018). https://doi.org/10.1007/s00704-017-2294-3

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  • DOI: https://doi.org/10.1007/s00704-017-2294-3

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