Journal article
Remote moisture sources for 6-hour summer precipitation over the Southeastern Tibetan Plateau and its effects on precipitation intensity
Atmospheric research, Vol.236, p.104803
05/15/2020
DOI: 10.1016/j.atmosres.2019.104803
Abstract
Using Lagrangian moisture tracking methodology for 37-year reanalysis data, this study presents a quantitative climatology of remote moisture sources for 6-hourly summer precipitation over the southeastern Tibetan Plateau (SETP) during the boreal summer for the 1980–2016 period. The connections between moisture sources and regional-scale precipitation intensity are also explored. Different from previous viewpoints, this study finds that the terrestrial and oceanic sources contribute approximately 70% and 30% to the moisture supply for the summer precipitation over the SETP, with the Indian continent and Arabian Sea acting as the most important providers, respectively. Enhanced regional-scale precipitation, particularly for extreme events, can largely be further attributed to the increased moisture uptake originating from these two predominant sources with transport time scales of 2–5 days prior to the onset of precipitation. The intensified precipitation events are more likely to be associated with the enhanced water vapor transport conveyed by the large-scale atmospheric circulations, together with the land evaporation over the remote source regions.
•Quantification of remote moisture sources for summer precipitation over the SETP region from a climatological perspective.•The regional intensified precipitation is closely related to the variability in predominant moisture sources.•Both enhanced water vapor transport and increased evaporation over remote regions lead to the extreme precipitation.
Details
- Title: Subtitle
- Remote moisture sources for 6-hour summer precipitation over the Southeastern Tibetan Plateau and its effects on precipitation intensity
- Creators
- Shuai Yang - State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, ChinaWei Zhang - IIHR-Hydroscience & Engineering, The University of Iowa, Iowa City, Iowa, USABin Chen - State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, ChinaXiangDe Xu - State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, ChinaRuiyu Zhao - State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China
- Resource Type
- Journal article
- Publication Details
- Atmospheric research, Vol.236, p.104803
- Publisher
- Elsevier B.V
- DOI
- 10.1016/j.atmosres.2019.104803
- ISSN
- 0169-8095
- eISSN
- 1873-2895
- Grant note
- DOI: 10.13039/501100001809, name: National Natural Science Foundation of China, award: 91637102, 41130960; name: the National Key Research and Development Program on Monitoring, Early Warning and Prevention of Major Natural Disaster, award: 2018YFC1506001; name: Second Tibetan Plateau Comprehensive Scientific Expendition and Research, award: 2019QZKK0105
- Language
- English
- Date published
- 05/15/2020
- Academic Unit
- IIHR--Hydroscience and Engineering
- Record Identifier
- 9984066350202771
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