气候变化领域集成服务门户(CCPortal): Evaporation suppression and energy balance of water reservoirs covered with self-assembling floating elements

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DOI	10.5194/hess-22-4015-2018
	Evaporation suppression and energy balance of water reservoirs covered with self-assembling floating elements
	Aminzadeh M.; Lehmann P.; Or D.
发表日期	2018
ISSN	1027-5606
起始页码	4015
结束页码	4032
卷号	22 期号:7
英文摘要	The growing pressure on natural freshwater resources and the projected climate variability are expected to increase the need for water storage during rainy periods. Evaporative losses present a challenge for the efficiency of water storage in reservoirs, especially in arid regions with chronic water shortages. Among the available methods for suppressing evaporative losses, self-assembling floating elements offer a simple and scalable solution, especially for small reservoirs. The use of floating elements has often been empirically based; we thus seek a framework for systematic consideration of floating element properties, local climate and reservoir conditions to better predict evaporative loss, energy balance and heat fluxes from covered water reservoirs. We linked the energy balance of the water column with energy considerations of the floating elements. Results suggest significant suppression of evaporative losses from covered reservoirs in which incoming radiative energy is partitioned to sensible and long wave fluxes that reduce latent heat flux and thus increase the Bowen ratio over covered water reservoirs. Model findings were consistent with laboratory-scale observations using an uncovered and covered small basin. The study offers a physically based framework for testing design scenarios in terms of evaporation suppression efficiency for various climatic conditions; it hence strengthens the science in the basis of this important water resource conservation strategy. © Author(s) 2018.
语种	英语
scopus关键词	Energy balance; Evaporation; Heat flux; Water conservation; Water resources; Water supply; Climate variability; Climatic conditions; Energy considerations; Fresh water resources; Radiative energy; Reservoir conditions; Resource conservation; Scalable solution; Reservoirs (water); Bowen ratio; energy balance; evaporation; floating structure; latent heat flux; radiative transfer; reservoir; water column; water resource; water storage
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159958
作者单位	Aminzadeh, M., Department of Environmental Systems Science, ETH Zurich, Switzerland, Department of Civil Engineering, Isfahan University of Technology, Isfahan, Iran; Lehmann, P., Department of Environmental Systems Science, ETH Zurich, Switzerland; Or, D., Department of Environmental Systems Science, ETH Zurich, Switzerland
推荐引用方式 GB/T 7714	Aminzadeh M.,Lehmann P.,Or D.. Evaporation suppression and energy balance of water reservoirs covered with self-assembling floating elements[J],2018,22(7).
APA	Aminzadeh M.,Lehmann P.,&Or D..(2018).Evaporation suppression and energy balance of water reservoirs covered with self-assembling floating elements.Hydrology and Earth System Sciences,22(7).
MLA	Aminzadeh M.,et al."Evaporation suppression and energy balance of water reservoirs covered with self-assembling floating elements".Hydrology and Earth System Sciences 22.7(2018).