DOI: 10.1175/JCLI-D-15-0445.1
Scopus记录号: 2-s2.0-84995489493
论文题名: Climatological characteristics of heavy rainfall in northern Pakistan and atmospheric blocking over western Russia
作者: Yamada T.J. ; Takeuchi D. ; Farukh M.A. ; Kitano Y.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 21 起始页码: 7743
结束页码: 7754
语种: 英语
Scopus关键词: Atmospheric temperature
; Climate change
; Climatology
; Hydrology
; Oceanography
; Principal component analysis
; Sea level
; Surface waters
; Atmospheric blocking
; Atmospheric pattern
; Climate variability
; Eastern pacific Ocean
; Heavy precipitation
; Hydrologic cycles
; Precipitation intensity
; Sea surface temperature anomalies
; Rain
英文摘要: Pakistan and northwestern India have frequently experienced severe heavy rainfall events during the boreal summer over the last 50 years including an event in late July and early August 2010 due to a sequence of monsoon surges. This study identified five dominant atmospheric patterns by applying principal component analysis and k-means clustering to a long-term sea level pressure dataset from 1979 to 2014. Two of these five dominant atmospheric patterns corresponded with a high frequency of the persistent atmospheric blocking index and positive sea level pressure over western Russia as well as an adjacent meridional trough ahead of northern Pakistan. In these two groups, a negative sea surface temperature anomaly was apparent over the equatorial mid- to eastern Pacific Ocean. The heavy precipitation periods with high persistent blocking frequency in western Russia as in the 2010 heat wave tended to have 1.2 times larger precipitation intensity compared to the whole of the heavy precipitation periods during the 36 years. © 2016 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50321
Appears in Collections: 气候变化事实与影响
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作者单位: Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido, Japan; Department of Environmental Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
Recommended Citation:
Yamada T.J.,Takeuchi D.,Farukh M.A.,et al. Climatological characteristics of heavy rainfall in northern Pakistan and atmospheric blocking over western Russia[J]. Journal of Climate,2016-01-01,29(21)