Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR020797 |
Space-Time Patterns of Meteorological Drought Events in the European Greater Alpine Region Over the Past 210 Years | |
Haslinger, K.1,2,3; Bloeschl, G.2,3 | |
2017-11-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Austria |
英文摘要 | Droughts may have tremendous impacts on humans. However, the space-time characteristics of droughts are not very well understood, as case studies usually focus on individual drought events. Here we investigate the spatiotemporal drought characteristics of a large sample of events over the past 210 years in the Greater Alpine Region of Central Europe. We use monthly precipitation data, and flag, for each grid point, time steps with precipitation below a 20% percentile. We then propose a new method that detects drought events by connecting the flagged elements to space-time drought regions. In contrast to the traditional drought indices that are based on a fixed, prescribed time window, this method is able to identify droughts of different durations in an objective way. The data show multidecadal variations of drought frequency, duration, intensity, and severity, but no consistent trends over the 210 year period. The top 5% of events in terms of their severity show a shift in seasonality from winter/spring events in the late nineteenth century toward autumn events during the last decades of the twentieth century. The most severe events center either in the Northwest or in the Southeast of the region analyzed. We found no significant correlations of drought frequency, duration, intensity, and severity with the temperature increases in the past three decades. Dry springs significantly enhance temperatures during summer droughts, suggesting a soil moisture-temperature feedback. |
英文关键词 | drought space-time Greater Alpine Region climate change Europe |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418736700064 |
WOS关键词 | STANDARDIZED PRECIPITATION INDEX ; AREA-DURATION ANALYSIS ; SOIL-MOISTURE ; SPATIAL-PATTERNS ; SEVERITY INDEX ; DATA SET ; VARIABILITY ; CONNECTIVITY ; SCALE ; BACK |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
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/20816 |
专题 | 资源环境科学 |
作者单位 | 1.Cent Inst Meteorol & Geodynam, Climate Res Dept, Vienna, Austria; 2.Vienna Univ Technol, Inst Hydraul & Water Resources Engn, Vienna, Austria; 3.Vienna Univ Technol, Ctr Water Resource Syst, Vienna, Austria |
推荐引用方式 GB/T 7714 | Haslinger, K.,Bloeschl, G.. Space-Time Patterns of Meteorological Drought Events in the European Greater Alpine Region Over the Past 210 Years[J]. WATER RESOURCES RESEARCH,2017,53(11). |
APA | Haslinger, K.,&Bloeschl, G..(2017).Space-Time Patterns of Meteorological Drought Events in the European Greater Alpine Region Over the Past 210 Years.WATER RESOURCES RESEARCH,53(11). |
MLA | Haslinger, K.,et al."Space-Time Patterns of Meteorological Drought Events in the European Greater Alpine Region Over the Past 210 Years".WATER RESOURCES RESEARCH 53.11(2017). |
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