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The study aims to investigate the spatiotemporal characteristics of compound drought and high temperature events in China from 1982 to 2023.

April 17, 2026WaterOpen Access

Comprehensive Analysis of Spatial–Temporal Patterns and Trends of Compound Drought and High Temperature Events from 1982 to 2023 Across China

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Analysis reveals increased severity and frequency of drought and heat events in China, indicating growing climate risk.

The study aims to investigate the spatiotemporal characteristics of compound drought and high temperature events in China from 1982 to 2023.
Identified compound drought and high temperature events using an improved daily Standardized Precipitation Evapotranspiration Index.
Analyzed data on daily maximum temperature with a quantile relative dynamic threshold at the raster level.
Conducted trend analysis to assess changes in duration, frequency, and severity of events across China.
Observed strong spatial heterogeneity in event duration and severity across regions.
Longest event durations were found in Xizang, while higher severity concentrated south of 30° N.
Detected a widespread increase in the duration, frequency, and intensity of CDHT events, particularly in Xinjiang, Inner Mongolia, and Yunnan.

Zheng et al. (2026) studied this question.

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