Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.5669 |
Spatio-temporal variability of extreme precipitation in Nepal | |
Talchabhadel, Rocky1,2; Karki, Ramchandra2,3; Thapa, Bhesh Raj4; Maharjan, Manisha5; Parajuli, Binod2 | |
2018-09-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:11页码:4296-4313 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; Nepal; Germany |
英文摘要 | Nepal is one of the most vulnerable countries to climate change impacts. Extreme weather events associated with heavy precipitations are the principal causes of landslides, debris flows and all types of floods disasters in the country, which by causing tremendous losses of life and property affects the socio-economic development. Given the limited availability of knowledge in spatio-temporal distribution of precipitation in Nepal, this study analyses the spatial distribution of monthly and annual precipitation and 1-day extreme precipitation and their trends utilizing a large number of stations (291 stations for the first time) distributed across the country for the period of 1966-2015. This study focuses on the exploration of elevational dependencies of precipitation to demonstrate the effect of topographic heterogeneity caused by the numbers of broad and narrow river valleys and mountain slopes and ridges. Also, this study investigates the relation of 1-day extreme precipitation with mean annual precipitation. Our results show the peak annual precipitation elevation between 2,000 and 3,500m above sea level, while in contrast 1-day extreme precipitation peaks are found at lower elevation in the southern foothills with its highest intensity in a central region of the country. The occurrence of 10% of mean annual precipitation in a single day has been observed in 75% of the analysed stations which in turn indicates the high likelihoods of initiation of landslides, soil erosions and floods in different parts of the country. There is no definitive countrywide decadal trend in extreme precipitation intensity and occurrence. A station-wise trend clearly shows the increase in extreme precipitation events in western mountainous regions in the recent decades. In other locations, the mixed patterns of station-wise increasing and decreasing trends are found. |
英文关键词 | extreme precipitation Nepal spatial variability temporal variability trend |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000443683600018 |
WOS关键词 | HYDROLOGICAL SERIES ; DAILY TEMPERATURE ; OBSERVED TRENDS ; UNITED-STATES ; MANN-KENDALL ; RAIN EVENTS ; RIVER-BASIN ; HIMALAYA ; INTENSITY ; FREQUENCY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/37004 |
专题 | 气候变化 |
作者单位 | 1.Kyoto Univ, Disaster Prevent Res Inst, Kyoto, Japan; 2.Govt Nepal, Dept Hydrol & Meteorol, Kathmandu, Nepal; 3.Univ Hamburg, Inst Geog, Hamburg, Germany; 4.Int Water Management Inst, Kathmandu, Nepal; 5.Kyoto Univ, Dept Environm Engn, Kyoto, Japan |
推荐引用方式 GB/T 7714 | Talchabhadel, Rocky,Karki, Ramchandra,Thapa, Bhesh Raj,et al. Spatio-temporal variability of extreme precipitation in Nepal[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(11):4296-4313. |
APA | Talchabhadel, Rocky,Karki, Ramchandra,Thapa, Bhesh Raj,Maharjan, Manisha,&Parajuli, Binod.(2018).Spatio-temporal variability of extreme precipitation in Nepal.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(11),4296-4313. |
MLA | Talchabhadel, Rocky,et al."Spatio-temporal variability of extreme precipitation in Nepal".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.11(2018):4296-4313. |
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