气候变化领域集成服务门户(CCPortal): Coupled Snow and Frozen Ground Physics Improves Cold Region Hydrological Simulations: An Evaluation at the upper Yangtze River Basin (Tibetan Plateau)

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DOI	10.1029/2019JD031622
	Coupled Snow and Frozen Ground Physics Improves Cold Region Hydrological Simulations: An Evaluation at the upper Yangtze River Basin (Tibetan Plateau)
	Qi, Jia; Wang, Lei; Zhou, Jing; Song, Lei; Li, Xiuping; Zeng, Tian
通讯作者	Wang, L (通讯作者)
发表日期	2019
ISSN	2169-897X
EISSN	2169-8996
起始页码	12985
结束页码	13004
卷号	124 期号:23
英文摘要	Cryosphere plays an important role in cold-region (e.g., Tibetan Plateau) hydrological processes under climate change, and thus cryosphere physics should be carefully represented in the hydrological modeling. In this study, based on the Water and Energy Budget-based Distributed Hydrological Model (WEB-DHM), we have further improved the cold-region hydrological processes, by incorporating the enthalpy-based coupled snow and frozen ground physics (hereinafter WEB-DHM-SF), and comprehensively evaluated at the upper Yangtze River Basin under widespread snow cover and frozen ground. The model was calibrated and validated at the basin scale using observed discharge at Zhimenda station during 1981-2016 and simulated discharge with high accuracies. The model also successfully reproduced the basin-wide daytime and nighttime land surface temperature (LST) as well as snow depth in basin-averaged time series and spatial distributions. At the point scale, the model successfully reproduced soil moisture and temperature profiles at Tuotuohe based on available yearlong observations. Furthermore, experiments were designed to investigate model improvements and indicated that the incorporation of the three-layer snow scheme with correct consideration of incident solar radiation attenuation among snow layers resulted in lowered snow melting and reduced discharges. Additionally, the incorporation of frozen ground physics with a correct description of soil water phase changes rendered the modeled soil moistures and temperatures more accurate in the cold season. Through rigorous evaluations of model performance, the incorporation of coupled snow and frozen ground physics demonstrates significant promise for improving cryosphere hydrological simulations in river basins on the TP.
关键词	SURFACE PARAMETERIZATION SIB2 CLIMATE-CHANGE SOIL PARAMETERIZATION ATMOSPHERIC GCMS THERMAL REGIME MODEL WATER TEMPERATURE CATCHMENT DYNAMICS
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000502544100001
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/259447
推荐引用方式 GB/T 7714	Qi, Jia,Wang, Lei,Zhou, Jing,et al. Coupled Snow and Frozen Ground Physics Improves Cold Region Hydrological Simulations: An Evaluation at the upper Yangtze River Basin (Tibetan Plateau)[J]. 中国科学院青藏高原研究所,2019,124(23).
APA	Qi, Jia,Wang, Lei,Zhou, Jing,Song, Lei,Li, Xiuping,&Zeng, Tian.(2019).Coupled Snow and Frozen Ground Physics Improves Cold Region Hydrological Simulations: An Evaluation at the upper Yangtze River Basin (Tibetan Plateau).JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(23).
MLA	Qi, Jia,et al."Coupled Snow and Frozen Ground Physics Improves Cold Region Hydrological Simulations: An Evaluation at the upper Yangtze River Basin (Tibetan Plateau)".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.23(2019).