DOI: 10.5194/hess-19-2353-2015
Scopus记录号: 2-s2.0-84930221979
论文题名: Multi-annual droughts in the English Lowlands: A review of their characteristics and climate drivers in the winter half-year
作者: Folland C ; K ; , Hannaford J ; , Bloomfield J ; P ; , Kendon M ; , Svensson C ; , Marchant B ; P ; , Prior J ; , Wallace E
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期: 5 起始页码: 2353
结束页码: 2375
语种: 英语
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Climatology
; Flow of water
; Groundwater
; Nickel
; Oceanography
; Rain
; Rivers
; Stream flow
; Surface waters
; Water resources
; Densely populated regions
; Drought management
; Early Warning System
; Quasi-biennial oscillation
; Sea surface temperature (SST)
; Southern oscillation
; Standardized precipitation index
; Standardized streamflow indices
; Drought
; Atlantic Multidecadal Oscillation
; climate forcing
; drought stress
; El Nino-Southern Oscillation
; literature review
; lowland environment
; population density
; quasi-biennial oscillation
; sea surface temperature
; water resource
; United Kingdom
英文摘要: The English Lowlands is a relatively dry, densely populated region in the south-east of the UK in which water is used intensively. Consequently, parts of the region are water-stressed and face growing water resource pressures. The region is heavily dependent on groundwater and particularly vulnerable to long, multi-annual droughts primarily associated with dry winters. Despite this vulnerability, the atmospheric drivers of multi-annual droughts in the region are poorly understood, an obstacle to developing appropriate drought management strategies, including monitoring and early warning systems. To advance our understanding, we assess known key climate drivers in the winter half-year (October-March) and their likely relationships with multi-annual droughts in the region. We characterise historic multi-annual drought episodes back to 1910 for the English Lowlands using various meteorological and hydrological data sets. Multi-annual droughts are identified using a gridded precipitation series for the entire region, and refined using the Standardized Precipitation Index (SPI), Standardized Streamflow Index (SSI) and Standardized Groundwater level Index (SGI) applied to regional-scale river flow and groundwater time series. We explore linkages between a range of potential climatic driving factors and precipitation, river flow and groundwater level indicators in the English Lowlands for the winter half-year. The drivers or forcings include El Niño-Southern Oscillation (ENSO), the North Atlantic tripole sea surface temperature (SST) pattern, the Quasi-Biennial Oscillation (QBO), solar and volcanic forcing and the Atlantic Multi-decadal Oscillation (AMO). As expected, no single driver convincingly explains the occurrence of any multi-annual drought in the historical record. However, we demonstrate, for the first time, an association between La Niña episodes and winter rainfall deficits in some major multi-annual drought episodes in the English Lowlands. We also show significant (albeit relatively weak) links between ENSO and drought indicators applied to river flow and groundwater levels. We also show that some of the other drivers listed above are likely to influence English Lowlands rainfall. We conclude by signposting a direction for this future research effort. © Author(s) 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78518
Appears in Collections: 气候变化事实与影响
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作者单位: Met Office Hadley Centre, Exeter, United Kingdom; Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden; Centre and Ecology and Hydrology, Wallingford, United Kingdom; British Geological Survey, Wallingford, United Kingdom; British Geological Survey, Keyworth, United Kingdom
Recommended Citation:
Folland C,K,, Hannaford J,et al. Multi-annual droughts in the English Lowlands: A review of their characteristics and climate drivers in the winter half-year[J]. Hydrology and Earth System Sciences,2015-01-01,19(5)