气候变化领域集成服务门户(CCPortal): A Multilayer Reservoir Thermal Stratification Module for Earth System Models

CCPortal

DOI	10.1029/2019MS001632
	A Multilayer Reservoir Thermal Stratification Module for Earth System Models
	Yigzaw W.; Li H.-Y.; Fang X.; Leung L.R.; Voisin N.; Hejazi M.I.; Demissie Y.
发表日期	2019
ISSN	19422466
起始页码	3265
结束页码	3283
卷号	11 期号:10
英文摘要	Thermal stratification in reservoirs is a critical process that regulates downstream riverine energy and biogeochemical cycling. Current stratification models either simplify vertical energy process, reservoir geometry or neglecting the effects of reservoir operation. Here we present a new multilayer reservoir stratification model that can be applied for reservoir and stream temperature simulation at regional or global scale. With a multilayer vertical discretization, we introduce a newly developed storage-area-depth dataset to improve parameterization of advection processes in and out of the reservoir. The new model better represents vertical temperature gradient and subsequently temperature of water released to downstream. The stratification model is applied to 1,400 reservoirs over the contiguous United States and validated against observed surface, profile, and outflow temperature data over 130 reservoirs subjected to various levels of regulation. The Nash-Sutcliffe values are higher than 0.5 for about 77% of the validated reservoirs using surface temperature while the average values of root mean square error and bias are 3.6 °C and −1.1 °C, respectively. Using the new reservoir storage-area-depth dataset improves the simulation of surface temperature at over 69% of the validated reservoirs compared to using simplified reservoir geometry. The reservoir stratification model contributes to improving predictive understanding of anthropogenic impact on terrestrial hydrological, ecological, and biogeochemical cycles. © 2019. The Authors.
英文关键词	earth system modeling; reservoirs; Thermal stratification
语种	英语
scopus关键词	Atmospheric temperature; Biogeochemistry; Digital storage; Ecology; Mean square error; Multilayers; Petroleum reservoirs; Surface properties; Thermal stratification; Anthropogenic impacts; Biogeochemical cycling; Current stratification; Earth system model; Multilayer reservoirs; Root mean square errors; Temperature of water released; Vertical temperature gradients; Reservoirs (water); anthropogenic effect; biogeochemical cycle; data set; Earth structure; reservoir; stratification; temperature gradient; United States
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156846
作者单位	Department of Civil and Environmental Engineering, University of Houston, Houston, TX, United States; Department of Civil Engineering, Auburn University, Auburn, AL, United States; Pacific Northwest National Laboratory, Richland, WA, United States; Joint Global Change Research Institute, Pacific Northwest National Laboratory, College Park, MD, United States; Department of Civil and Environmental Engineering, Washington State University, Richland, WA, United States
推荐引用方式 GB/T 7714	Yigzaw W.,Li H.-Y.,Fang X.,et al. A Multilayer Reservoir Thermal Stratification Module for Earth System Models[J],2019,11(10).
APA	Yigzaw W..,Li H.-Y..,Fang X..,Leung L.R..,Voisin N..,...&Demissie Y..(2019).A Multilayer Reservoir Thermal Stratification Module for Earth System Models.Journal of Advances in Modeling Earth Systems,11(10).
MLA	Yigzaw W.,et al."A Multilayer Reservoir Thermal Stratification Module for Earth System Models".Journal of Advances in Modeling Earth Systems 11.10(2019).