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Tracing Snowmelt Paths in an Integrated Hydrological Model for Understanding Seasonal Snowmelt Contribution at Basin Scale
Li, HY (Li, Hongyi)1,2,3; Li, X (Li, Xin)4,5; Yang, DW (Yang, Dawen)6; Wang, J (Wang, Jian)1,2; Gao, B (Gao, Bing)7; Pan, XD (Pan, Xiaoduo)1,3; Zhang, YL (Zhang, Yanlin)8; Hao, XH (Hao, Xiaohua)1,2
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
2019
Volume124Issue:16Pages:8874-8895
DOI10.1029/2019JD030760
Abstract

Snowmelt contributions to water resources in cold regions are receiving increasing attention. However, there are clear challenges to accurately distinguish the snowmelt contributions to different hydrological processes in seasonal snow regions. Here, we present an improved method to evaluate snowmelt contributions by tracing the snowmelt flow paths in different media based on a distributed geomorphology-based ecohydrological model coupled with a physically based snow module. The calculated snowmelt contribution is not limited to river discharge but is also applicable to evaporation and soil storage. The study region, the upstream Heihe River (UHR) basin, is located in the northeastern Tibetan Plateau. Our results indicate that snowmelt can continuously contribute to hydrological processes throughout the year because most of the snowmelt remains in soil voids, even on snow-free days. In UHR, the snowmelt contribution to total runoff on snow days accounts for a minor part of the total snowmelt contribution, and the snowmelt contribution on snow-free days accounts for a major part of the total. There is notable snowmelt retention in the soil in each year, which continues to supply discharge into next year. Our results also indicate that the role of snowmelt contribution to annual discharge could be gradually weakened if rainfall more greatly increases the summer discharge in the UHR basin. The improved evaluation method will contribute to a more comprehensive assessment of snowmelt contributions to hydrological processes in seasonal snow regions.

Subject AreaAtmospheric Sciences
WOS IDWOS:000490762800001
Language英语
Indexed BySCI
KeywordInland River-basin Heihe River Climate-change Cover Products Runoff Snowpack China Area Catchment Discharge
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
Cooperation Status国内
ISSN2169-897X
URL查看原文
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9188
Collection图书馆
Corresponding AuthorLi, HY (Li, Hongyi)
Affiliation1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Gansu, Peoples R China;
2.Chinese Acad Sci, Heihe Remote Sensing Expt Res Stn, Lanzhou, Gansu, Peoples R China;
3.Chinese Acad Sci, Key Lab Remote Sensing Gansu Prov, Lanzhou, Gansu, Peoples R China;
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China;
5.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China;
6.Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing, Peoples R China;
7.China Univ Geosci, Sch Water Resources & Environm, Beijing, Peoples R China;
8.Hunan Univ Sci & Technol, Natl Local Joint Engn Lab Geospatial Informat Tec, Xiangtan, Peoples R China.
Recommended Citation
GB/T 7714
Li, HY ,Li, X ,Yang, DW ,et al. Tracing Snowmelt Paths in an Integrated Hydrological Model for Understanding Seasonal Snowmelt Contribution at Basin Scale[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(16):8874-8895.
APA Li, HY .,Li, X .,Yang, DW .,Wang, J .,Gao, B .,...&Hao, XH .(2019).Tracing Snowmelt Paths in an Integrated Hydrological Model for Understanding Seasonal Snowmelt Contribution at Basin Scale.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(16),8874-8895.
MLA Li, HY ,et al."Tracing Snowmelt Paths in an Integrated Hydrological Model for Understanding Seasonal Snowmelt Contribution at Basin Scale".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.16(2019):8874-8895.
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