Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023083 |
Development of a Global River Water Temperature Model Considering Fluvial Dynamics and Seasonal Freeze-Thaw Cycle | |
Tokuda, Daisuke1; Kim, Hyungjun1; Yamazaki, Dai1; Oki, Taikan1,2,3 | |
2019-02-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:2页码:1366-1383 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | In this study, we developed a global river water temperature model that explicitly represents water and heat budgets. The model considers fluvial dynamics such as floodplain inundation and as well simulates seasonal freeze-thaw cycles for temperate and arctic rivers, and it was found that proposed physically based parameterizations appropriately reproduced in situ observed seasonal variations in 12 global rivers. Theoretically, floodplain inundation has two major effects on water temperature variability: (1) broadening of water surfaces, which increases heat exchange with the atmosphere and friction with river bed, and (2) shallowing mean water depth, which increases the absorption rate of shortwave radiation per unit volume. In contrast to the broadening which affects both warming and cooling processes, the shallowing causes warming only and has dominant impacts mainly during the ice melting season in Arctic regions and the rainy season in the tropics. Furthermore, it was revealed that lateral mixing between channel and floodplain has a significant impact on determination of river water temperature. Although water temperature plays an important role in water quality and riverine material circulation linking terrestrial and coastal environments, it has not been considered in most Earth system models. The improvements in global-scale river water temperature modeling demonstrated in this study will benefit for future Earth systems research. |
英文关键词 | river water temperature floodplain inundation hydrology energy transport global modeling river water quality |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000461858900026 |
WOS关键词 | STREAM ; HETEROGENEITY ; PATTERNS ; SYSTEM |
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/181297 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Tokyo, Inst Ind Sci, Tokyo, Japan; 2.United Nations Univ, Tokyo, Japan; 3.Univ Tokyo, Integrated Res Syst Sustainabil Sci, Inst Adv Study, Tokyo, Japan |
推荐引用方式 GB/T 7714 | Tokuda, Daisuke,Kim, Hyungjun,Yamazaki, Dai,et al. Development of a Global River Water Temperature Model Considering Fluvial Dynamics and Seasonal Freeze-Thaw Cycle[J]. WATER RESOURCES RESEARCH,2019,55(2):1366-1383. |
APA | Tokuda, Daisuke,Kim, Hyungjun,Yamazaki, Dai,&Oki, Taikan.(2019).Development of a Global River Water Temperature Model Considering Fluvial Dynamics and Seasonal Freeze-Thaw Cycle.WATER RESOURCES RESEARCH,55(2),1366-1383. |
MLA | Tokuda, Daisuke,et al."Development of a Global River Water Temperature Model Considering Fluvial Dynamics and Seasonal Freeze-Thaw Cycle".WATER RESOURCES RESEARCH 55.2(2019):1366-1383. |
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