globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2263
论文题名:
Detection of solar dimming and brightening effects on Northern Hemisphere river flow
作者: Gedney N.; Huntingford C.; Weedon G.P.; Bellouin N.; Boucher O.; Cox P.M.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2014
卷: 7, 期:11
起始页码: 796
结束页码: 800
语种: 英语
Scopus关键词: aerosol ; air quality ; climate change ; environmental assessment ; industrial location ; meteorology ; Northern Hemisphere ; river flow ; solar radiation ; twentieth century ; Europe ; North America
英文摘要: Anthropogenic aerosols in the atmosphere have the potential to affect regional-scale land hydrology through solar dimming1,2. Increased aerosol loading may have reduced historical surface evaporation over some locations3, but the magnitude and extent of this effect is uncertain. Any reduction in evaporation due to historical solar dimming may have resulted in an increase in river flow. Here we formally detect and quantify the historical effect of changing aerosol concentrations, via solar radiation, on observed river flow over the heavily industrialized, northern extra-tropics. We use a state-of-the-art estimate of twentieth century surface meteorology4 as input data for a detailed land surface model5, and show that the simulations capture the observed strong inter-annual variability in runoff in response to climatic fluctuations. Using statistical techniques, we identify a detectable aerosol signal in the observed river flow both over the combined region, and over individual river basins in Europe and North America. We estimate that solar dimming due to rising aerosol concentrations in the atmosphere around 1980 led to an increase in river runoff by up to 25% in the most heavily polluted regions in Europe. We propose that, conversely, these regions may experience reduced freshwater availability in the future, as air quality improvements are set to lower aerosol loading and solar dimming. © 2014 Macmillan Publishers Limited. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106391
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Met Office Hadley Centre, Joint Centre for Hydrometeorological Research, Maclean Building, Wallingford, United Kingdom; Centre for Ecology and Hydrology, Wallingford, United Kingdom; Department of Meteorology, University of Reading, Reading, United Kingdom; Laboratoire de Météorologie Dynamique, IPSL/CNRS, Paris, France; College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, United Kingdom

Recommended Citation:
Gedney N.,Huntingford C.,Weedon G.P.,et al. Detection of solar dimming and brightening effects on Northern Hemisphere river flow[J]. Nature Geoscience,2014-01-01,7(11)
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