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August 1, 2026Nature GeoscienceOpen Access

Threefold increase in atmospheric–riverine compound heatwaves under climate change

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Authors

YZYu ZhouSun Yat-sen UniversityYSYanxia ShenHohai UniversityWZWei ZhiState Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering

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Overview

Randomized trial reveals co-occurring compound heatwaves threaten freshwater ecosystems, suggesting urgent assessment needs.

Key Points

  • To investigate the co-occurrence of atmospheric and riverine compound heatwaves and their implications for water systems.
  • Analyzed 796 river basins in the USA and Central Europe;
  • Combined water quality observations with a deep learning model;
  • Characterized trends in temperature, duration, and intensity of heatwaves from 1981-2019.
  • Compound heatwaves increased by about 0.40 events per decade since the 1980s;
  • By 2100, 98.5% of riverine heatwaves expected to coincide with atmospheric heatwaves;
  • Compound heatwaves contribute to a 16% rise in water temperature and a 2.9% decline in dissolved oxygen.

Cite This Study

Zhou et al. (2026) studied this question.

synapsesocial.com/papers/6a6da778e258b358b3c6c8e7https://doi.org/10.1038/s41561-026-02040-y
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Also Consider

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  5. 5Emerging compound air-soil heatwaves amplify global vegetation losses2026