气候变化领域集成服务门户(CCPortal): Satellite precipitation in southeastern South America: how do sampling errors impact high flow simulations?

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DOI	10.1080/15715124.2013.865637
	Satellite precipitation in southeastern South America: how do sampling errors impact high flow simulations?
	Demaria, Eleonora M. C.; Nijssen, Bart; Valdes, Juan B.; Rodriguez, Daniel A.; Su, Fengge
通讯作者	Demaria, EMC (通讯作者)
发表日期	2014
ISSN	1571-5124
EISSN	1814-2060
起始页码	1
结束页码	13
卷号	12 期号:1
英文摘要	Satellite precipitation estimates are increasingly available at temporal and spatial scales of interest to hydrological applications and with the potential for improving flood forecasts in data-sparse regions. This study evaluates the effect of sampling error on simulated large flood events. Synthetic precipitation fields were generated in Monte Carlo fashion by perturbing observed precipitation fields with sampling errors based on 1, 2 and 6 h intervals. The variable infiltration capacity hydrological model was used to assess the impact of these errors on simulated high flow events in the Iguazu basin, a raindominated, subtropical basin in southeastern South America. Results showed that unbiased errors in daily error-corrupted precipitation fields introduced bias in the simulated hydrologic fluxes and states. The overall bias for error-corrupted daily streamflows was positive and its magnitude increased with larger sampling intervals. However, for high flow events, the bias was negative as a result of an increase in simulated infiltration and changes in precipitation variability. Errors in precipitation also affected the magnitude and volume of the peak events but did not change the first two statistical moments of the peaks indicating that non-linearities in the hydrological system preserve the statistical properties of high flows in the basin. Caution is needed when using satellite products for hydrological applications that require the estimation of large peaks and volumes.
关键词	GLOBAL PRECIPITATION RAINFALL UNCERTAINTY PASSIVE-MICROWAVE VIC-2L MODEL FLUXES RADAR PARAMETERIZATION PREDICTION DEPENDENCE RESOLUTION
英文关键词	Flood forecasting; peak flows; satellite precipitation; VIC model; South America; sampling errors
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:000212545900001
来源期刊	INTERNATIONAL JOURNAL OF RIVER BASIN MANAGEMENT
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/258367
推荐引用方式 GB/T 7714	Demaria, Eleonora M. C.,Nijssen, Bart,Valdes, Juan B.,et al. Satellite precipitation in southeastern South America: how do sampling errors impact high flow simulations?[J]. 中国科学院青藏高原研究所,2014,12(1).
APA	Demaria, Eleonora M. C.,Nijssen, Bart,Valdes, Juan B.,Rodriguez, Daniel A.,&Su, Fengge.(2014).Satellite precipitation in southeastern South America: how do sampling errors impact high flow simulations?.INTERNATIONAL JOURNAL OF RIVER BASIN MANAGEMENT,12(1).
MLA	Demaria, Eleonora M. C.,et al."Satellite precipitation in southeastern South America: how do sampling errors impact high flow simulations?".INTERNATIONAL JOURNAL OF RIVER BASIN MANAGEMENT 12.1(2014).