globalchange  > 气候减缓与适应
DOI: 10.1016/j.quaint.2019.01.034
WOS记录号: WOS:000484434700002
论文题名:
Does the long-term precipitation variations and dry-wet conditions exist in the arid areas? A case study from China
作者: Liu, Yi1,2,3,4; Chen, Shujun5; Sun, Huaiwei5; Gui, Dongwei4,6; Xue, Jie4,6; Lei, Jiaqiang4,6; Zeng, Xiaofan5; Lv, Guanghui1,2
通讯作者: Sun, Huaiwei ; Gui, Dongwei
刊名: QUATERNARY INTERNATIONAL
ISSN: 1040-6182
EISSN: 1873-4553
出版年: 2019
卷: 519, 页码:3-9
语种: 英语
英文关键词: Precipitation ; Drought and flood ; Standardized precipitation index ; Precipitation anomaly index ; Percentage of precipitation anomaly ; Long-cycle drought-flood abrupt alternation index
WOS关键词: YANGTZE-RIVER BASIN ; CLIMATE-CHANGE ; EL-NINO ; VARIABILITY ; RUNOFF ; TRENDS ; EXTREMES ; RAINFALL ; DROUGHT ; SUMMER
WOS学科分类: Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向: Physical Geography ; Geology
英文摘要:

The detailed precipitation characteristics is required for the investigation of regional hydrological processes, precipitation related disasters, and water resources management. Quantifying and understanding the precipitation change in arid area are crucial for prediction of its future and avoiding disasters. In this study, it was investigated the precipitation concentration, and its variability along with the linkage of global large-scale circulation anomalies in Xinjiang between 1960 and 2016. Using meteorological data from 54 weather stations coupling with atmospheric circulation indices, several precipitation indices were used as standard measures for determining the basic characteristics of floods and droughts. Results showed that the characteristics of the precipitation concentration feature were identified by two precipitation indices: precipitation concentration degree (PCD) and precipitation concentration period (PCP). The PCD value has decreased in recent years, which illustrates the characteristics of drought. The values of the precipitation concentration index (PCI) that indicated extreme precipitation ranged from 9 to 20 in 57 years and exhibited a significant decreasing trend in 1960-2016. However, an increasing precipitation condition can be observed through the monthly standardized precipitation index (SPI), which indicates that drought-flood abrupt alternation will be more frequent and the abrupt change should be noticed in recent years. It is found to be suitable to use the long-cycle drought-flood abrupt alternation index (LDFAI) to investigate the characteristics of drought-flood abrupt alternation during summers. Further investigations on the linkage between drought-flood abrupt alternation and atmospheric circulation indices showed that the time delay of LDFAI after an atmospheric anomaly will be 1-4 months. The results of this study will help mitigate and regulate the precipitation related problems in arid area, as well as in other regions.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/124793
Appears in Collections:气候减缓与适应

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作者单位: 1.Xinjiang Univ, Inst Arid Ecol & Environm, Urumqi 830046, Peoples R China
2.Xinjiang Univ, Key Lab Oasis Ecol, Urumqi 830046, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China
5.Huazhong Univ Sci & Technol, Sch Hydropower & Informat Engn, Wuhan 430074, Hubei, Peoples R China
6.Cele Natl Stn Observat & Res Desert Grassland Eco, Cele 848300, Peoples R China

Recommended Citation:
Liu, Yi,Chen, Shujun,Sun, Huaiwei,et al. Does the long-term precipitation variations and dry-wet conditions exist in the arid areas? A case study from China[J]. QUATERNARY INTERNATIONAL,2019-01-01,519:3-9
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