Zhou et al. (2026) The Role of Local Wave Activity in Influencing Extreme Precipitation Patterns Over North and Northeast China

⚠️ 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: 2026-10-04
• Authors: Tianjiao Zhou, Zuowei Xie, Pengyu Hu
• DOI: 10.1002/joc.70620

Research Groups

• Department of Atmospheric Science, University of Beijing
• State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics

Short Summary

This study investigates the spatial patterns of extreme precipitation in North and Northeast China during the warm season using a structural self-organising map and local finite-amplitude wave activity framework. The research reveals distinct large-scale circulation characteristics associated with different precipitation patterns.

Objective

• Investigate the relationship between large-amplitude wave activity and spatial patterns of extreme precipitation over North and Northeast China

Study Configuration

• Spatial Scale: Regional, focusing on North and Northeast China
• Temporal Scale: May–August 1961–2024

Methodology and Data

• Models used: Structural self-organising map for pattern identification
• Data sources: Precipitation observations, atmospheric reanalysis data (e.g., ERA5)

Main Results

• Four dominant precipitation patterns identified with distinct large-scale circulation characteristics
• Northern pattern associated with baroclinic trough–ridge configuration and pronounced mid-tropospheric LWA
• Southern pattern related to equatorward and meridionally extended wave structure, enhanced lower-tropospheric LWA, and continuous southwesterly moisture transport

Contributions

• Original contribution to understanding the relationship between large-amplitude wave activity and spatial patterns of extreme precipitation in North and Northeast China
• Provides new insights into the mechanisms driving regional precipitation extremes

Funding

• National Natural Science Foundation of China (Grant No. 91837204)
• Ministry of Education of China's Key Research Project (Grant No. 2017JZD011)

Citation

@article{Zhou2026Role,
  author = {Zhou, Tianjiao and Xie, Zuowei and Hu, Pengyu},
  title = {The Role of Local Wave Activity in Influencing Extreme Precipitation Patterns Over North and Northeast China},
  journal = {International Journal of Climatology},
  year = {2026},
  doi = {10.1002/joc.70620},
  url = {https://doi.org/10.1002/joc.70620}
}