Drought is typically divided into meteorological, agricultural, hydrological, and socioeconomic categories. Generally, the transition from meteorological drought to other types of droughts is known as drought propagation. When drought propagation occurs, different types of droughts may still exist simultaneously or successively. In this study, compound droughts are divided into three categories: hydrological meteorological compound drought (HMD), meteorological hydrological compound drought (MHD), and simultaneous compound drought (SD). ERA5 and CMIP6 data are used for analysis under historical and future scenarios. Different types of compound droughts have emerged in extreme centers in different basins. Our analysis indicates a significant upward trend in the duration of these three compound droughts from 1979 to 2022. Additionally, our projections under SSP5-8.5 and SSP2-4.5 suggest a substantial increase in the occurrence of various compound droughts. HMD, MHD and SD all show a consistent upward trend under the future scenario above the moderate-drought level. MHDs are projected to experience the most significant increase compared to the historical period in the far-future period (2066–2099) under SSP5-8.5.

Zhuoyuan Li

Er Lu

Juqing Tu

Dian Yuan

Atmosphere

ATMOSPHERE (ISSN 2073-4433) 是一本国际性和跨学科的与大气相关的科学研究的学术期刊。它发表评论、定期研究论文、通讯和简短的笔记，并且对论文的长度没有限制。我们的目标是鼓励科学家尽可能详细地发表他们的实验和理论研究。必须为研究文章提供完整的实验和/或系统细节。

Atmosphere is an international and interdisciplinary academic journal focused on scientific research related to the atmosphere. The journal publishes comments, regular research papers, communications, and short notes, with no restrictions on the length of submissions. Our aim is to encourage scientists to share their experimental and theoretical research in as much detail as possible. Research articles must provide comprehensive experimental and/or systematic details.

《Atmosphere》是一本国际性、跨学科的学术期刊，专注于与大气相关的科学研究。期刊发表评论、定期研究论文、通讯和简短的笔记，且对论文的长度没有限制。我们的目标是鼓励科学家尽可能详细地分享他们的实验和理论研究。研究文章必须提供完整的实验和/或系统细节。

Historical and Future Changes in Meteorological–Hydrological Compound Drought in China

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Journal Info

Category	Quartile
METEOROLOGY & ATMOSPHERIC SCIENCES	4