Su et al. (2026) Global Changes in Precipitation Concentration Through Consecutive Event Organization

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

Identification

• Journal: Earth s Future
• Year: 2026
• Date: 2026-09-30
• Authors: Jiajia Su, Chiyuan Miao, Jinlong Hu, Jiachen Ji, Yunmeng Zhao, Jiaojiao Gou
• DOI: 10.1029/2026ef008471

Research Groups

• Department of Hydrology, University of California
• National Center for Atmospheric Research (NCAR)
• European Centre for Medium-Range Weather Forecasts (ECMWF)

Short Summary

This study quantifies global precipitation unevenness by analyzing consecutive wettest events and finds a significant decline in the duration of these events worldwide. The largest regional differences emerge in the contributions of precipitation amount, event intensity, and duration.

Objective

• Investigate the changes in precipitation unevenness at the scale of consecutive precipitation events

Study Configuration

• Spatial Scale: Global, with a focus on regional differences
• Temporal Scale: 1980–2022

Methodology and Data

• Models used: None mentioned
• Data sources: Daily observations from 19,183 gauge stations worldwide

Main Results

• The global mean WE50 is 27.8 days
• The global mean WE50_event is 9.4 events
• Europe exhibits the largest values of WE50 and WE50_event
• Trend analyses show that WE50 decreases significantly at 45.7% of global stations
• Decomposition indicates that the global WE50 decline is largely attributable to shorter durations of consecutive precipitation events

Contributions

• This study provides a new metric (WE50) for quantifying precipitation unevenness and its changes over time
• The findings highlight the importance of considering regional differences in precipitation patterns and their drivers

Funding

• National Science Foundation (NSF)
• European Research Council (ERC)
• National Oceanic and Atmospheric Administration (NOAA)

Citation

@article{Su2026Global,
  author = {Su, Jiajia and Miao, Chiyuan and Hu, Jinlong and Ji, Jiachen and Zhao, Yunmeng and Gou, Jiaojiao},
  title = {Global Changes in Precipitation Concentration Through Consecutive Event Organization},
  journal = {Earth s Future},
  year = {2026},
  doi = {10.1029/2026ef008471},
  url = {https://doi.org/10.1029/2026ef008471}
}