| Spatial coherence of variations in seasonal extreme precipitation events over Northwest Arid Region, China | |
| Wang, Shaoping1,2; Jiang, Fengqing3; Ding, Yongjian1 | |
| 刊名 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
 |
| 2015-12-01 | |
| 卷号 | 35期号:15页码:4642-4654 |
| 关键词 | spatial coherence extreme precipitation indices heavy and torrential precipitation thresholds REOF Northwest Arid Region, China |
| ISSN号 | 0899-8418 |
| DOI | 10.1002/joc.4313 |
| 通讯作者 | Jiang, Fengqing(jiangfq@ms.xjb.ac.cn) |
| 英文摘要 | Daily precipitation data covering the period of 1961-2009 from 72 stations in Northwest Arid Region, China, are analysed to investigate coherent subregions of variations in extreme precipitation events. First, four extreme precipitation indices, i.e. number of heavy precipitation days (DPh), precipitation intensity above heavy precipitation (IPh), number of torrential precipitation days (DPt), and precipitation intensity above torrential precipitation (IPt), were defined and analysed seasonally. Then rotated empirical orthogonal function (REOF) technique is used to identify the coherent subregions of these seasonal extreme precipitation indices and related trends. The results indicate that the number of coherent subregions of DPh, IPh, DPt, and IPt is 6, 5, 14, and 10 for spring; 4, 18, 6, and 6 for summer; 15, 8, 10, and 8 for autumn; and 7, 7, 2, and 5 for winter, respectively. Attribute shifts of underlying surfaces should be an important driving factor behind changes of extreme precipitation events. Intensity variations of heavy and torrential precipitation are the main reason behind significant changes of extreme precipitation, especially intensity variations of the heavy precipitation. The highest increasing magnitude of IPh is 584% (10a)(-1) which is found in summer in the west parts of the Southern Xinjiang, the middle Tianshan Mountains, and the west parts of the Junggar Basin in the Northern Xinjiang. The findings of this study are potentially relevant for the development of human understanding of hydrological cycle responses in arid regions to regional and global climate changes, particularly in terms of extreme weather extremes. |
| 收录类别 | SCI |
| WOS关键词 | TEMPORAL TRENDS ; CLIMATE ; ROTATION ; INDEXES ; MODEL |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | WILEY-BLACKWELL |
| WOS记录号 | WOS:000367733700017 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2557118 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Jiang, Fengqing |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Div Hydrol Water Land Resources Cold & Arid Reg, Beijing 100864, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Xinjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Shaoping,Jiang, Fengqing,Ding, Yongjian. Spatial coherence of variations in seasonal extreme precipitation events over Northwest Arid Region, China[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2015,35(15):4642-4654. |
| APA | Wang, Shaoping,Jiang, Fengqing,&Ding, Yongjian.(2015).Spatial coherence of variations in seasonal extreme precipitation events over Northwest Arid Region, China.INTERNATIONAL JOURNAL OF CLIMATOLOGY,35(15),4642-4654. |
| MLA | Wang, Shaoping,et al."Spatial coherence of variations in seasonal extreme precipitation events over Northwest Arid Region, China".INTERNATIONAL JOURNAL OF CLIMATOLOGY 35.15(2015):4642-4654. |
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