气候变化领域集成服务门户(CCPortal): Tracing Snowmelt Paths in an Integrated Hydrological Model for Understanding Seasonal Snowmelt Contribution at Basin Scale

CCPortal

DOI	10.1029/2019JD030760
	Tracing Snowmelt Paths in an Integrated Hydrological Model for Understanding Seasonal Snowmelt Contribution at Basin Scale
	Li, Hongyi; Li, Xin; Yang, Dawen; Wang, Jian; Gao, Bing; Pan, Xiaoduo; Zhang, Yanlin; Hao, Xiaohua
通讯作者	Li, HY (通讯作者)
发表日期	2019
ISSN	2169-897X
EISSN	2169-8996
起始页码	8874
结束页码	8895
卷号	124 期号:16
英文摘要	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.
关键词	INLAND RIVER-BASIN HEIHE RIVER CLIMATE-CHANGE COVER PRODUCTS RUNOFF SNOWPACK CHINA AREA CATCHMENT DISCHARGE
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000490762800001
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259577
推荐引用方式 GB/T 7714	Li, Hongyi,Li, Xin,Yang, Dawen,et al. Tracing Snowmelt Paths in an Integrated Hydrological Model for Understanding Seasonal Snowmelt Contribution at Basin Scale[J]. 中国科学院青藏高原研究所,2019,124(16).
APA	Li, Hongyi.,Li, Xin.,Yang, Dawen.,Wang, Jian.,Gao, Bing.,...&Hao, Xiaohua.(2019).Tracing Snowmelt Paths in an Integrated Hydrological Model for Understanding Seasonal Snowmelt Contribution at Basin Scale.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(16).
MLA	Li, Hongyi,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).