干旱区生态环境知识资源中心(Arid): Multicriteria analysis on rock moisture and streamflow in a rainfall-runoff model improves accuracy of model results

Arid

DOI	10.1002/hyp.14536
	Multicriteria analysis on rock moisture and streamflow in a rainfall-runoff model improves accuracy of model results
	La Follette, Peter T.; Hahm, W. Jesse; Rempe, Daniella M.; Dietrich, William E.; Brauer, Claudia C.; Weerts, Albrecht H.; Dralle, David N.
通讯作者	La Follette, PT
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2022
卷号	36 期号:3
英文摘要	Although shallow (<1.5 m) soil water storage has been extensively studied, the significance of deeper unsaturated zone water storage to flow generation is poorly documented. However, a limited but growing body of empirical work shows that the weathered bedrock vadose zone, not soil, stores the majority of plant available water in many seasonally dry and semi-arid landscapes. Moreover, this storage dynamic mediates recharge to hillslope groundwater systems that generate stream discharge and support ecologically significant baseflows. Explicit representations of bedrock vadose zone processes are rarely incorporated into runoff models, due in part to a paucity of observations that can constrain simulations. Here, we develop a simple representation of the weathered bedrock vadose zone that is guided by in situ field observations. We incorporate this representation into a rainfall-runoff model, and calibrate it on streamflow alone, on rock moisture (i.e., weathered bedrock vadose zone moisture) alone, and on both using the concept of Pareto optimality. We find that the model is capable of accurately simultaneously simulating dynamics in rock moisture and streamflow, in terms of Kling-Gupta Efficiency, when using Pareto optimal parameter sets. Calibration on streamflow alone, however, is insufficient to accurately simulate rock moisture dynamics. We further find that the posterior distributions of some model parameters are sensitive to choice of calibration scenario. The posterior distribution of high-performing model parameters resulting from the streamflow only calibration scenario include physically unrealistic values that are not yielded by the rock moisture only or Pareto calibration strategies. These results suggest that the accuracy of some model results can be increased and parameter uncertainty decreased via incorporation of rock moisture data in calibration, without sacrificing streamflow simulation quality. Emerging recognition of the global significance of weathered bedrock water storage in seasonally dry and semi-arid regions motivates more observations of weathered bedrock moisture and integration of this variable into earth system models.
英文关键词	conceptual hydrologic model multiple criteria analysis parameter uncertainty rock moisture vadose zone
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000774800200001
WOS关键词	BEDROCK GROUNDWATER ; SOIL-MOISTURE ; HYDROLOGIC RESPONSE ; WATER STORAGE ; FLOW ; HILLSLOPE ; ZONE ; CALIBRATION ; EVAPOTRANSPIRATION ; TRANSPIRATION
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393046
推荐引用方式 GB/T 7714	La Follette, Peter T.,Hahm, W. Jesse,Rempe, Daniella M.,et al. Multicriteria analysis on rock moisture and streamflow in a rainfall-runoff model improves accuracy of model results[J],2022,36(3).
APA	La Follette, Peter T..,Hahm, W. Jesse.,Rempe, Daniella M..,Dietrich, William E..,Brauer, Claudia C..,...&Dralle, David N..(2022).Multicriteria analysis on rock moisture and streamflow in a rainfall-runoff model improves accuracy of model results.HYDROLOGICAL PROCESSES,36(3).
MLA	La Follette, Peter T.,et al."Multicriteria analysis on rock moisture and streamflow in a rainfall-runoff model improves accuracy of model results".HYDROLOGICAL PROCESSES 36.3(2022).