Nie et al. (2025) Divergent Impacts of Precipitation Regimes on Autumn Phenology in the Northern Hemisphere Mid‐ to High‐Latitudes

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

Identification

• Journal: Geophysical Research Letters
• Year: 2025
• Date: 2025-09-30
• Authors: Yonggang Nie, Zhaofei Wu, Shouzhi Chen, Yue Xu, Yufeng Gong, Hongzhou Wang, Yi Xiao, Zunchi Liu, Yongshuo H. Fu
• DOI: 10.1029/2025gl117589

Research Groups

Not available from the provided abstract.

Short Summary

This study investigated the impacts of total precipitation and precipitation frequency on the end of the vegetation growing season (EOS) across the mid- to high-latitudes of the Northern Hemisphere. It found that both increased total precipitation and decreased precipitation frequency delayed EOS, and developed an improved process-based autumn phenology model by incorporating precipitation frequency.

Objective

• To examine the effects of precipitation regimes (total precipitation and precipitation frequency) on the end of the vegetation growing season (EOS) across the mid- to high-latitudes of the Northern Hemisphere.

Study Configuration

• Spatial Scale: Mid- to high-latitudes of the Northern Hemisphere
• Temporal Scale: 1982 to 2020 (39 years)

Methodology and Data

• Models used: A newly developed process-based autumn phenology model incorporating precipitation frequency.
• Data sources: Satellite-derived phenology data.

Main Results

• Increased total precipitation (P_total) delayed the end of the growing season (EOS).
• Decreased precipitation frequency (P_freq) delayed EOS, a phenomenon likely mediated by increased maximum temperature and elevated soil moisture resulting from higher precipitation intensity.
• The newly developed process-based autumn phenology model, which incorporated the effect of P_freq, significantly improved model performance.

Contributions

• Quantified the distinct impacts of total precipitation and precipitation frequency on the end of the growing season (EOS) across Northern Hemisphere mid- to high-latitudes.
• Identified that decreased precipitation frequency delays EOS, with the effect mediated by changes in maximum temperature and soil moisture due to increased precipitation intensity.
• Developed an improved process-based autumn phenology model by integrating precipitation frequency, enhancing the predictive capability for vegetation carbon uptake under future climate scenarios.

Funding

Not available from the provided abstract.

Citation

@article{Nie2025Divergent,
  author = {Nie, Yonggang and Wu, Zhaofei and Chen, Shouzhi and Xu, Yue and Gong, Yufeng and Wang, Hongzhou and Xiao, Yi and Liu, Zunchi and Fu, Yongshuo H.},
  title = {Divergent Impacts of Precipitation Regimes on Autumn Phenology in the Northern Hemisphere Mid‐ to High‐Latitudes},
  journal = {Geophysical Research Letters},
  year = {2025},
  doi = {10.1029/2025gl117589},
  url = {https://doi.org/10.1029/2025gl117589}
}