GSTDTAP  > 资源环境科学
DOI10.1002/2017WR020797
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
ISSN0043-1397
EISSN1944-7973
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
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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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