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Peer-reviewedCC BYEarth's Future

Global Changes in Precipitation Concentration Through Consecutive Event Organization

  • Jiajia Su1
  • Chiyuan Miao1
  • Jinlong Hu1
  • Jiachen Ji1
  • Yunmeng Zhao1
  • Jiaojiao Gou1
  1. 1State Key Laboratory of Earth Surface Processes and Disaster Risk Reduction Faculty of Geographical Science Beijing Normal University Beijing China
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Abstract

Global warming is reshaping precipitation extremes and increasing temporal rainfall unevenness, yet precipitation unevenness has rarely been quantified at the scale of consecutive precipitation events. Using daily observations from 19,183 gauge stations worldwide during 1980–2022, we defined WE50 as the total duration of the consecutive wettest precipitation events required to deliver 50% of annual precipitation, and WE50_event as the number of selected events contributing to that half. The global mean WE50 is 27.8 days, and WE50_event is 9.4 events, with Europe exhibiting the largest values. Trend analyses show that WE50 decreases significantly at 45.7% of global stations, whereas WE50_event changes are generally weak. A decomposition further indicates that the global WE50 decline is largely attributable to shorter durations of consecutive precipitation events, with comparable contributions observed in Europe and South America, whereas regional differences emerge in the contributions of precipitation amount, event intensity, and duration.

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Cite

BibTeXRIS
BibTeX
@article{su2026global,
  title = {{Global Changes in Precipitation Concentration Through Consecutive Event Organization}},
  author = {Jiajia Su and Chiyuan Miao and Jinlong Hu and Jiachen Ji and Yunmeng Zhao and Jiaojiao Gou},
  journal = {Earth's Future},
  year = {2026},
  month = oct,
  doi = {10.1029/2026ef008471},
  url = {https://doi.org/10.1029/2026ef008471},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Global Changes in Precipitation Concentration Through Consecutive Event Organization
AU  - Jiajia Su
AU  - Chiyuan Miao
AU  - Jinlong Hu
AU  - Jiachen Ji
AU  - Yunmeng Zhao
AU  - Jiaojiao Gou
PY  - 2026
DA  - 2026/10/28
JO  - Earth's Future
DO  - 10.1029/2026ef008471
UR  - https://doi.org/10.1029/2026ef008471
AB  - Global warming is reshaping precipitation extremes and increasing temporal rainfall unevenness, yet precipitation unevenness has rarely been quantified at the scale of consecutive precipitation events. Using daily observations from 19,183 gauge stations worldwide during 1980–2022, we defined WE50 as the total duration of the consecutive wettest precipitation events required to deliver 50% of annual precipitation, and WE50_event as the number of selected events contributing to that half. The global mean WE50 is 27.8 days, and WE50_event is 9.4 events, with Europe exhibiting the largest values. Trend analyses show that WE50 decreases significantly at 45.7% of global stations, whereas WE50_event changes are generally weak. A decomposition further indicates that the global WE50 decline is largely attributable to shorter durations of consecutive precipitation events, with comparable contributions observed in Europe and South America, whereas regional differences emerge in the contributions of precipitation amount, event intensity, and duration.
SN  - 2328-4277
ER  -