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[Temporal variability of the isotope compositions of plum rain in Nanjing from event to interannual time scales]. / 南京梅雨降水同位素组成从事件到年际尺度的变化特征.
Zhang, Hao; Xiao, Wei; Xie, Cheng-Yu; Hu, Yong-Bo; Chu, Hao-Ran; Wang, Jing-Yuan; Li, Xu-Hui.
Afiliación
  • Zhang H; Center on Atmospheric Environment, China Meteorological Administration Key Laboratory of Ecosystem Carbon Source and Sink, Nanjing University of Information Science and Technology, Nanjing 210044, China.
  • Xiao W; Center on Atmospheric Environment, China Meteorological Administration Key Laboratory of Ecosystem Carbon Source and Sink, Nanjing University of Information Science and Technology, Nanjing 210044, China.
  • Xie CY; Satellite Application Center for Ecology and Environment, Ministry of Ecology and Environment, Beijing 100094, China.
  • Hu YB; Center on Atmospheric Environment, China Meteorological Administration Key Laboratory of Ecosystem Carbon Source and Sink, Nanjing University of Information Science and Technology, Nanjing 210044, China.
  • Chu HR; Center on Atmospheric Environment, China Meteorological Administration Key Laboratory of Ecosystem Carbon Source and Sink, Nanjing University of Information Science and Technology, Nanjing 210044, China.
  • Wang JY; Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
  • Li XH; School of the Environment, Yale University, New Haven 06511, USA.
Ying Yong Sheng Tai Xue Bao ; 35(4): 951-960, 2024 Apr 18.
Article en Zh | MEDLINE | ID: mdl-38884230
ABSTRACT
Precipitation in the plum rain period accounts for 40%-50% of annual precipitation in the monsoon region. To clarify the temporal variability of the isotopic composition of precipitation during the plum rain period from event to interannual time scale and identify the influencing factors, we analyzed the isotopic composition of precipitation and its influencing factors in Nanjing from 2015 to 2022. By using the Hybrid Single-particle Lagran-gian Integrated Trajectory (HYSPLIT) model with specific humidity analysis, we investigated the water vapor source and influencing factors. The results showed that 1) the isotopic abundance of atmospheric precipitation was depleted in the summer and enriched in winter. dx was lower in summer and higher in winter. The isotopic abundance of precipitation from the plum rain was depleted compared to mean value of the whole-year. 2) There was no significant correlation between δ2H and δ18O of the plum rain (precipitation) with local meteorological factors. However, dx was lower in light rain, reflecting the effect of sub-cloud evaporation. The average dx was higher during plum rain period in years with more total plum rain precipitation. 3) The low-latitude South China Sea and the western Pacific Ocean source area provided water vapor for the plum rain. The shift of moisture source region led to abrupt changes in precipitation isotopes. Our results could provide data support for studies on precipitation isotopes in the monsoon region, as well as a reference point for further understanding the precipitation mechanism of the plum rain and stu-dying the seasonal variability of atmospheric circulation in the East Asian monsoon region.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Lluvia / Estaciones del Año País/Región como asunto: Asia Idioma: Zh Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: China
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Lluvia / Estaciones del Año País/Región como asunto: Asia Idioma: Zh Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: China