{"title":"Early burst of Tibetan Plateau vortices increases extreme precipitation over Tibetan Plateau in early spring","authors":"Lun Li, Renhe Zhang, Jingzhi Su","doi":"10.1038/s41612-025-01094-w","DOIUrl":null,"url":null,"abstract":"<p>Tibetan Plateau vortices (TPVs) are key drivers of precipitation over the Tibetan Plateau (TP), triggering heavy precipitation both locally and in downstream regions. This work reveals that an early burst of TPVs significantly enhances the extreme precipitation over the TP in early spring. Variation in burst date of TPVs during 1979–2023 is investigated, and the underlying mechanism is explored. It is reported that the burst date of TPVs tends to be much earlier, gradually shifting from April to March. Rapid sea ice cover decline in the northern North Atlantic, under the sea surface warming context, intensifies the subsequent upward surface heat flux in the sea near Scandinavia. This process promotes the negative phase of Scandinavia teleconnection pattern (STP) in March, which benefits the genesis of TPVs by strengthening the cyclonic convergence and ascending motion over the TP.</p>","PeriodicalId":19438,"journal":{"name":"npj Climate and Atmospheric Science","volume":"36 1","pages":""},"PeriodicalIF":8.5000,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"npj Climate and Atmospheric Science","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1038/s41612-025-01094-w","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"METEOROLOGY & ATMOSPHERIC SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Tibetan Plateau vortices (TPVs) are key drivers of precipitation over the Tibetan Plateau (TP), triggering heavy precipitation both locally and in downstream regions. This work reveals that an early burst of TPVs significantly enhances the extreme precipitation over the TP in early spring. Variation in burst date of TPVs during 1979–2023 is investigated, and the underlying mechanism is explored. It is reported that the burst date of TPVs tends to be much earlier, gradually shifting from April to March. Rapid sea ice cover decline in the northern North Atlantic, under the sea surface warming context, intensifies the subsequent upward surface heat flux in the sea near Scandinavia. This process promotes the negative phase of Scandinavia teleconnection pattern (STP) in March, which benefits the genesis of TPVs by strengthening the cyclonic convergence and ascending motion over the TP.
期刊介绍：
npj Climate and Atmospheric Science is an open-access journal encompassing the relevant physical, chemical, and biological aspects of atmospheric and climate science. The journal places particular emphasis on regional studies that unveil new insights into specific localities, including examinations of local atmospheric composition, such as aerosols.
The range of topics covered by the journal includes climate dynamics, climate variability, weather and climate prediction, climate change, ocean dynamics, weather extremes, air pollution, atmospheric chemistry (including aerosols), the hydrological cycle, and atmosphere–ocean and atmosphere–land interactions. The journal welcomes studies employing a diverse array of methods, including numerical and statistical modeling, the development and application of in situ observational techniques, remote sensing, and the development or evaluation of new reanalyses.
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