Zhang et al. (2025) Remote Impact of Preceding Soil Moisture on the May—June Precipitation of Huang‐Huai Wheat Region in China

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

Identification

• Journal: International Journal of Climatology
• Year: 2025
• Date: 2025-12-30
• Authors: S Zhang, Hui Gao, Ting Ding, Haixu Hong
• DOI: 10.1002/joc.70253

Research Groups

Not explicitly mentioned in the abstract.

Short Summary

This study identifies March-April soil moisture in the north Black Sea and Caspian Sea (NBC) region as a key precursor for May-June precipitation anomalies in China's Huang-Huai Plain, revealing a significant positive correlation driven by a Rossby wave train mechanism.

Objective

• To identify a key precursor for May-June precipitation anomalies in the Huang-Huai wheat region and understand the underlying mechanisms.

Study Configuration

• Spatial Scale: Huang-Huai Plain (China), North Black Sea and Caspian Sea (NBC) region, and the west end of China.
• Temporal Scale: Precursor identified in March-April, influencing precipitation in May-June. Soil moisture persistence from March-April until May-June.

Methodology and Data

• Models used: Numerical experiments (specific model not named in the abstract) were conducted to confirm Rossby wave dynamics.
• Data sources: Not explicitly mentioned in the abstract (e.g., satellite, observation, reanalysis).

Main Results

• Preceding March-April soil moisture in the NBC region is a key precursor for May-June precipitation anomalies in the Huang-Huai wheat region, showing a significant positive correlation.
• The mechanism involves the persistence of NBC soil moisture from March-April to May-June.
• Wetter NBC soil anomalies in March-April cause local cold air anomalies in May-June via evaporative cooling, triggering upper-level circulation anomalies.
• These circulation anomalies initiate a Rossby wave train that propagates southeastward.
• The Rossby wave train drives anomalous southerly winds, enhancing water vapour transport and leading to water vapour convergence over the Huang-Huai region, favouring positive precipitation anomalies.
• Drier NBC soil anomalies correspond to the opposite circulation and precipitation anomalies.
• Numerical experiments confirm that feedback between atmospheric circulation and temperature over the west end of China plays a critical role in guiding the Rossby wave pathway initiated by NBC soil moisture forcing.

Contributions

• Provides new insights into precipitation prediction during the Huang-Huai wheat harvest period.
• Emphasizes the remote influence of mid-high-latitude soil moisture on climate prediction in China's winter wheat-producing areas.

Funding

Not mentioned in the abstract.

Citation

@article{Zhang2025Remote,
  author = {Zhang, S and Gao, Hui and Ding, Ting and Hong, Haixu},
  title = {Remote Impact of Preceding Soil Moisture on the May—June Precipitation of Huang‐Huai Wheat Region in China},
  journal = {International Journal of Climatology},
  year = {2025},
  doi = {10.1002/joc.70253},
  url = {https://doi.org/10.1002/joc.70253}
}