气候变化领域集成服务门户(CCPortal): Assessment of Runoff Components Simulated by GLDAS against UNH-GRDC Dataset at Global and Hemispheric Scales

CCPortal

DOI	10.3390/w10080969
	Assessment of Runoff Components Simulated by GLDAS against UNH-GRDC Dataset at Global and Hemispheric Scales
	Lv, Meizhao; Lu, Hui; Yang, Kun; Xu, Zhongfeng; Lv, Meixia; Huang, Xiaomeng
通讯作者	Lu, H (通讯作者)
发表日期	2018
ISSN	2073-4441
卷号	10 期号:8
英文摘要	The current evaluations of global land data assimilation system (GLDAS) runoff were generally limited to the observation-rich areas. At the global and hemispheric scales, we assessed different runoff components performance of GLDAS (1.0 and 2.1) using the University of New Hampshire and Global Runoff Data Centre (UNH-GRDC) dataset. The results suggest that GLDAS simulations show considerable uncertainties, particularly in partition of surface and subsurface runoffs, in snowmelt runoff modeling, and in capturing the northern peak time. GLDAS1.0-CLM (common land model) produced more surface runoff almost globally; GLDAS-Noah generated more surface runoff over the northern middle-high latitudes and more subsurface runoff in the remaining areas; while the partition in GLDAS1.0-VIC (variable infiltration capacity) is almost opposite to that in Noah. Comparing to GLDAS1.0-Noah, GLDAS2.1-Noah improved the premature snow-melting tendency, but its snowmelt-runoff peak magnitude was excessively high in June and July. The discrepancies in northern primary peak times among precipitation and runoff is partly caused by the combination of rainfall and melting-snow over high-latitude, as well as the very different temporal-spatial distributions for snowmelt runoff simulated by GLDAS models. This paper can provide valuable guidance for GLDAS users, and contribute to the further improvement of hydrological parameterized schemes.
关键词	SOIL-MOISTURE AIR-TEMPERATURE MODEL ASSIMILATION SYSTEM CLIMATE ANOMALIES
英文关键词	runoff component simulation; peak time; snowmelt; global and hemispheric scales; GLDAS
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:000448462700003
来源期刊	WATER
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/259179
推荐引用方式 GB/T 7714	Lv, Meizhao,Lu, Hui,Yang, Kun,et al. Assessment of Runoff Components Simulated by GLDAS against UNH-GRDC Dataset at Global and Hemispheric Scales[J]. 中国科学院青藏高原研究所,2018,10(8).
APA	Lv, Meizhao,Lu, Hui,Yang, Kun,Xu, Zhongfeng,Lv, Meixia,&Huang, Xiaomeng.(2018).Assessment of Runoff Components Simulated by GLDAS against UNH-GRDC Dataset at Global and Hemispheric Scales.WATER,10(8).
MLA	Lv, Meizhao,et al."Assessment of Runoff Components Simulated by GLDAS against UNH-GRDC Dataset at Global and Hemispheric Scales".WATER 10.8(2018).