Yang et al. (2026) Compound Meteorological and Hydrological Hot‐Dry and Hot‐Wet Extremes Over Global Land Areas: Spatiotemporal Changes, Attribution, and Drivers

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Identification

• Journal: International Journal of Climatology
• Year: 2026
• Date: 2026-09-15
• Authors: Ruting Yang, Silong Zhang, Xiongpeng Tang, Chao Gao, Haibin Zhang, Xin Yin, Yanli Liu
• DOI: 10.1002/joc.70593

Research Groups

• Institute of Atmospheric Sciences, Chinese Academy of Meteorological Sciences
• Department of Earth System Science, University of California, Irvine
• National Center for Atmospheric Research (NCAR)

Short Summary

This study investigates the spatiotemporal variations and attribution of compound meteorological and hydrological hot-dry and hot-wet extremes across the globe during 1901-2019. The results show an increasing trend in the likelihood of compound extremes, with a higher frequency of hot-wet extremes.

Objective

• Investigate the characteristics and driving mechanisms of compound hot-dry and hot-wet extremes at the global scale under climate warming

Study Configuration

• Spatial Scale: Global land areas during 1901-2019
• Temporal Scale: Warm season (May-September in Northern Hemisphere, November-March in Southern Hemisphere) over 119 years

Methodology and Data

• Models used: Not specified
• Data sources: Satellite, observation, reanalysis data for temperature, precipitation, runoff, and SST variability

Main Results

• The likelihood of compound meteorological and hydrological hot-dry and hot-wet extremes showed an increasing trend in more than 90% of global land during 1901-2019.
• The frequency of compound extremes from high to low was in the order of CHHWE, CMHWE, CMHDE, and CHHDE.
• High temperature contributed to the reduction of return period of compound hot-dry and hot-wet extremes in more than 92% of global land.

Contributions

• This study contributes to the understanding of characteristics and driving mechanisms of compound extremes at the global scale under climate warming.
• The results highlight the importance of considering both meteorological and hydrological aspects when studying compound extremes.

Funding

• National Natural Science Foundation of China (Grant No. 41875057)
• National Key Research and Development Program of China (Grant No. 2017YFC1501401)

Citation

@article{Yang2026Compound,
  author = {Yang, Ruting and Zhang, Silong and Tang, Xiongpeng and Gao, Chao and Zhang, Haibin and Yin, Xin and Liu, Yanli},
  title = {Compound Meteorological and Hydrological Hot‐Dry and Hot‐Wet Extremes Over Global Land Areas: Spatiotemporal Changes, Attribution, and Drivers},
  journal = {International Journal of Climatology},
  year = {2026},
  doi = {10.1002/joc.70593},
  url = {https://doi.org/10.1002/joc.70593}
}