Zhang et al. (2026) Two Types of Summer Concurrent Heatwaves Across Eurasia and Their Precursor Signals

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: International Journal of Climatology
• Year: 2026
• Date: 2026-07-29
• Authors: Zihan Zhang, Gang Zeng, Aminu Dalhatu Datti, Chen Chen, Yining Tao, Zhongxian Li
• DOI: 10.1002/joc.70529

Research Groups

• Institute of Atmospheric Physics, Chinese Academy of Sciences (IAP/CAS)
• National Center for Climate Change Strategy and International Cooperation (NCSC)

Short Summary

This study identifies two dominant spatial modes of summer concurrent heatwaves across Eurasia using a hierarchical clustering approach, providing insights into their precursor signals and dynamic drivers.

Objective

• Investigate the typical spatial types of summer concurrent heatwaves over Eurasia and their underlying physical mechanisms.

Study Configuration

• Spatial Scale: Continental scale (Eurasia)
• Temporal Scale: 1979–2023

Methodology and Data

• Models used: Linear baroclinic model (LBM)
• Data sources: Observations, reanalysis data

Main Results

• Two dominant spatial modes of summer concurrent heatwaves over Eurasia were identified: Type 1 CHWs in Eastern Europe, Central Siberia, and Northeast Asia; Type 2 CHWs in Northern Europe–Western Siberia and Eastern Siberia.
• Precursor signals for Type 1 CHWs include cold anomalies over the North Atlantic (NA) and southwest of Novaya Zemlya (SWNZ).
• Precursor signals for Type 2 CHWs include warm anomalies over the NA and cold anomalies over the southeast of Novaya Zemlya (SENZ).

Contributions

• This study provides a partial mechanistic basis for improving forecasts of concurrent heatwaves.
• The findings support targeted early warning systems by identifying key precursor signals.

Funding

• National Key Research and Development Program of China (2020YFA0607800)
• National Natural Science Foundation of China (42075004)

Citation

@article{Zhang2026Two,
  author = {Zhang, Zihan and Zeng, Gang and Datti, Aminu Dalhatu and Chen, Chen and Tao, Yining and Li, Zhongxian},
  title = {Two Types of Summer Concurrent Heatwaves Across Eurasia and Their Precursor Signals},
  journal = {International Journal of Climatology},
  year = {2026},
  doi = {10.1002/joc.70529},
  url = {https://doi.org/10.1002/joc.70529}
}