National-scale analysis of low flow frequency: historical trends and potential future changes
National-scale analysis of low flow frequency: historical trends and potential future changes
复制标题
全国范围低流量频率分析:历史趋势和未来潜在变化
DOI:
10.1007/s10584-018-2145-y
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发表时间:
2018
期刊:
影响因子:
4.8
通讯作者:
Kay A
中科院分区:
文献类型:
--
作者:
Kay A
The potential impact of climate change on hydrological extremes is of increasing concern across the globe. Here, a national-scale grid-based hydrological model is used to investigate historical trends and potential future changes in low flow frequency across Great Britain. The historical analyses use both observational data (1891–2015) and ensemble data from a regional climate model (1900–2006). The results show relatively few significant trends in historical low flows (2- or 20-year return period), whether based on 7- or 30-day annual minima. Significant negative trends seen in some limited parts of the country when using observational data are generally not seen when using climate model data. The future analyses use climate model ensemble data for both near future and far future time periods (2020–2049 and 2070–2099 respectively), which are compared to a baseline sub-period from the historical ensemble (1975–2004). The results show future reductions in low flows, which are generally larger in the south of the country, at the higher (20-year) return period, and for the later time period. Reductions are more limited if the estimates of future potential evaporation include the effect of increased carbon dioxide concentrations on stomatal resistance. Such reductions in river flow could have significant impacts on the aquatic environment and on agriculture, and present a challenge for water managers, especially as reductions in water supply are likely to occur alongside increases in demand.
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影响因子:
2.8
作者:
Reynard N
通讯作者:
Reynard N
影响因子:
6.4
作者:
Bell, V. A.;Kay, A. L.;Reynard, N. S.
通讯作者:
Reynard, N. S.
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
R. Maxey;M. Cranston;A. Tavendale;P. Buchanan
通讯作者:
P. Buchanan
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
C. Soulsbya;R. Helliwell;R. Ferrier;A. Jenkins;R. Harriman
通讯作者:
R. Harriman
DOI:
10.1002/joc.3913
发表时间:
2014
期刊:
International Journal of Climatology
影响因子:
--
作者:
A. Kay;S. Crooks
通讯作者:
S. Crooks