Abstract

The isotopic composition has long been used to investigate the factors influencing precipitation, whereas the variations of event-based precipitation isotopes caused by moisture transition and synoptic meteorological conditions remain limited. Here we present triple oxygen and hydrogen isotopes in event-based precipitation during West China Autumn Precipitation to evaluate the influence of various moisture sources in the hydrological process. Isotopes δ18O, δ17O, and δD peak with convective precipitation at the onset stage, then drop to their lowest amid stratiform precipitation during the middle stage, and rise again towards the end. In contrast, Δ′17O levels remain elevated throughout the mid-stage of West China Autumn Precipitation compared to the onset and end stages. These isotopic variations, coupled with moisture analysis, reveal a distinct moisture source transition from the West Pacific Ocean to the westerly domain during West China Autumn Precipitation accompanied by the retreat of the Asian summer monsoon from Northwest China.

Distinct moisture source transition from the West Pacific Ocean to the Westerly and inland domain occurred during West China Autumn Precipitation in Northwest China, according to event-based precipitation triple oxygen isotope data and moisture source analysis.

Details

Title
Triple oxygen isotope compositions reveal transitions in the moisture source of West China Autumn Precipitation
Author
Sha, Lijuan 1 ; Tian, Lijun 2   VIAFID ORCID Logo  ; Sha, Lifen 3 ; Li, Yunxia 4 ; Wang, Xuejie 5 ; Hu, Peng 6 ; Liang, Qisheng 7 ; Zong, Baoyun 1 ; Duan, Pengzhen 8 ; Cheng, Hai 9   VIAFID ORCID Logo 

1  Xi’an Jiaotong University, Institute of Global Environmental Change, Xi’an, China (GRID:grid.43169.39) (ISNI:0000 0001 0599 1243) 
2  Chinese Academy of Sciences, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Shijiazhuang, China (GRID:grid.9227.e) (ISNI:0000000119573309) 
3  Department of Natural Resources of Zhejiang Province, Information Centre, Hangzhou, China (GRID:grid.9227.e) 
4  Hunan Normal University, College of Resources and Environmental Sciences, Changsha, China (GRID:grid.411427.5) (ISNI:0000 0001 0089 3695) 
5  Yunnan University, Institute of International Rivers and Eco-security, Kunming, China (GRID:grid.440773.3) (ISNI:0000 0000 9342 2456) 
6  Yunnan University, Yunnan Key Laboratory of Meteorological Disasters and Climate Resources in the Greater Mekong Subregion, Kunming, China (GRID:grid.440773.3) (ISNI:0000 0000 9342 2456); Yunnan University, Department of Atmospheric Sciences, Kunming, China (GRID:grid.440773.3) (ISNI:0000 0000 9342 2456) 
7  Yunnan Normal University, Yunnan Key Laboratory of Plateau Geographical Processes & Environmental Changes, Faculty of Geography, Kunming, China (GRID:grid.410739.8) (ISNI:0000 0001 0723 6903) 
8  PetroChina, Research Institute of Petroleum Exploration and Development, Beijing, China (GRID:grid.464414.7) (ISNI:0000 0004 1765 2021) 
9  Xi’an Jiaotong University, Institute of Global Environmental Change, Xi’an, China (GRID:grid.43169.39) (ISNI:0000 0001 0599 1243); Chinese Academy of Sciences, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Xi’an, China (GRID:grid.9227.e) (ISNI:0000000119573309) 
Pages
188
Publication year
2024
Publication date
Dec 2024
Publisher
Nature Publishing Group
e-ISSN
26624435
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s43247-024-01354-2
ProQuest document ID
3034864224
Copyright
© The Author(s) 2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.