Liu et al. (2026) A Study on the Response of Precipitation to Climatic and Ecological Factors in the Middle and Lower Reaches of the Yellow River Based on Wavelet Analysis

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

Identification

• Journal: Water
• Year: 2026
• Date: 2026-01-07
• Authors: Guangyi Liu, Zihan Ji, Qingtian Chen, Peng Guo, Liu Ze
• DOI: 10.3390/w18020154

Research Groups

[Information not provided in the given text.]

Short Summary

This study investigates the periodic relationships between July precipitation in Henan Province (1983–2022) and key climatic drivers (ENSO, EASM, WPSH) and NDVI, identifying common periodic signals and primary drivers of precipitation variability.

Objective

• To investigate the periodic relationships between summer (July) precipitation in Henan Province and El Niño–Southern Oscillation (ENSO), East Asian Summer Monsoon (EASM), Western Pacific Subtropical High (WPSH), and Normalized Difference Vegetation Index (NDVI) during 1983–2022.

Study Configuration

• Spatial Scale: Henan Province, located in the middle and lower reaches of the Yellow River, China.
• Temporal Scale: 40 years (1983–2022), focusing on July precipitation.

Methodology and Data

• Models used: Not applicable (statistical analysis methods used: wavelet analysis, cross-wavelet transform (XWT), and wavelet coherence (WTC)).
• Data sources: Precipitation data for Henan Province; data for El Niño–Southern Oscillation (ENSO), East Asian Summer Monsoon (EASM), Western Pacific Subtropical High (WPSH), and Normalized Difference Vegetation Index (NDVI). Specific sources for these datasets are not detailed in the provided text.

Main Results

• Precipitation in Henan Province shares a common periodic signal at approximately 3–6 years with ENSO, EASM, WPSH, and NDVI.
• Low-frequency co-variability at the 18–20-year timescale was observed between precipitation and ENSO, EASM, and WPSH.
• ENSO, EASM, and WPSH are identified as the primary drivers of precipitation variability in the middle and lower reaches of the Yellow River.
• Anomalous summer precipitation in the region in recent years is closely linked to the periodic activities of ENSO, EASM, and WPSH.

Contributions

• Provides a detailed periodic analysis of summer precipitation variability in Henan Province, linking it to multiple global and regional climatic drivers and local vegetation.
• Quantifies the specific periodic timescales of influence for ENSO, EASM, WPSH, and NDVI on regional precipitation.
• Identifies the primary drivers of precipitation variability in the middle and lower reaches of the Yellow River, offering insights into recent anomalous precipitation events.

Funding

[Information not provided in the given text.]

Citation

@article{Liu2026Study,
  author = {Liu, Guangyi and Ji, Zihan and Chen, Qingtian and Guo, Peng and Ze, Liu},
  title = {A Study on the Response of Precipitation to Climatic and Ecological Factors in the Middle and Lower Reaches of the Yellow River Based on Wavelet Analysis},
  journal = {Water},
  year = {2026},
  doi = {10.3390/w18020154},
  url = {https://doi.org/10.3390/w18020154}
}