Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR026751 |
The Drivers of River Temperatures Below a Large Dam | |
Daniels, Miles E.1; Danner, Eric M.1,2 | |
2020-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2020 |
卷号 | 56期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Temperature is a fundamental aspect of water quality in rivers, controlling the rate of many ecological processes. By disrupting the flow of water, large reservoirs and dams can fundamentally alter downstream temperature regimes by resetting the water temperature and flow boundary conditions at the dam release point. Therefore, it is critically important to understand how the volume and temperature of these releases interact with meteorological conditions to influence downstream temperature dynamics. In this study, we modeled temperature dynamics in a large regulated river (Sacramento River, CA, USA) to better understand how heat fluxes, and ultimately river temperatures, responded to different physical drivers connected to meteorology and the upstream boundary conditions established by dam operations. We used a quantitative process-based model of river temperature (RAFT), combined with sensitivity analysis, to identify the dominant physical drivers of temperature in the Sacramento River, and explored how these drivers varied over space and time. The physical drivers that had the greatest influence on temperature dynamics were dam discharge temperature, air temperature, and solar radiation. The primary controlling factors were dam discharge temperature in the most upstream reaches and air temperature in the most downstream reaches. When isolating the effect of boundary conditions on downstream river temperature, we observed that temperatures closer to the dam under all but low flow conditions responded more to changes in dam discharge temperature than dam discharge volume. Understanding the spatial and temporal extents of drivers of heat flux and their relative importance is critical when managing for river temperature. |
英文关键词 | river temperature sensitivity analysis meteorology dam operations |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000537736400038 |
WOS关键词 | STREAM TEMPERATURE ; SENSITIVITY-ANALYSIS ; MODELS ; RESTORATION ; REGIME ; FLOWS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280655 |
专题 | 资源环境科学 |
作者单位 | 1.NOAA, Fisheries Ecol Div, Southwest Fisheries Sci Ctr, Natl Marine Fisheries Serv, Santa Cruz, CA 95060 USA; 2.NOAA, Fisheries Ecol Div, Southwest Fisheries Sci Ctr, Natl Marine Fisheries Serv, La Jolla, CA USA |
推荐引用方式 GB/T 7714 | Daniels, Miles E.,Danner, Eric M.. The Drivers of River Temperatures Below a Large Dam[J]. WATER RESOURCES RESEARCH,2020,56(5). |
APA | Daniels, Miles E.,&Danner, Eric M..(2020).The Drivers of River Temperatures Below a Large Dam.WATER RESOURCES RESEARCH,56(5). |
MLA | Daniels, Miles E.,et al."The Drivers of River Temperatures Below a Large Dam".WATER RESOURCES RESEARCH 56.5(2020). |
条目包含的文件 | 条目无相关文件。 |
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