DOI: 10.1016/j.accre.2017.02.001
Scopus记录号: 2-s2.0-85017391153
论文题名: Moisture sources of extreme summer precipitation events in North Xinjiang and their relationship with atmospheric circulation
作者: Huang W. ; Chang S.-Q. ; Xie C.-L. ; Zhang Z.-P.
刊名: Advances in Climate Change Research
ISSN: 16749278
出版年: 2017
卷: 8, 期: 1 起始页码: 12
结束页码: 17
语种: 英语
英文关键词: Extreme precipitation events
; Indian Ocean
; Lagrangian trajectory model
; Moisture sources
; North Xinjiang
英文摘要: In this study, the daily observational precipitation data and NCEP reanalysis data during 1951–2014, Euler and Lagrangian method were used to investigate the moisture sources of summer extreme precipitation events in North Xinjiang. The results show that water vapor at low and upper levels of most summer heavy rain (more than 50 mm d−1 and less than 100 mm d−1) in North Xinjiang are mainly transported by westerly circulation from the North Atlantic Ocean and the Eurasian continent. However, rainstorms of more than 100 mm d−1, which are rarely observed, are dominated by vertically integrated moisture from the North Atlantic, Arctic Oceans, and the Eurasian continent, in addition to low-level moisture from the Indian Ocean. Among these sources, the anomalous low-level moisture from the Indian Ocean, which is closely associated with stronger meridional circulation, is considered to be more important with respect to rainstorms. On the days prior to rainstorm days, stronger meridional circulation leads to an anomalous pressure gradient force, which can transport low-level moisture from the Indian Ocean along the eastern periphery of the Tibetan Plateau to North Xinjiang. Furthermore, moisture from the North Atlantic, Arctic Oceans, the Eurasian continent, and the Indian Ocean converge together to influence rainstorm development in this region. © 2017 National Climate Center (China Meteorological Administration) 资助项目: National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/58812
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China
Recommended Citation:
Huang W.,Chang S.-Q.,Xie C.-L.,et al. Moisture sources of extreme summer precipitation events in North Xinjiang and their relationship with atmospheric circulation[J]. Advances in Climate Change Research,2017-01-01,8(1)