Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR019627 |
Impact of evapotranspiration process representation on runoff projections from conceptual rainfall-runoff models | |
Guo, Danlu; Westra, Seth; Maier, Holger R. | |
2017 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | Conceptual rainfall-runoff models are commonly used to estimate potential changes in runoff due to climate change. The development of these models has generally focused on reproducing runoff characteristics, with less scrutiny on other important processes such as the conversion from potential evapotranspiration (PET) to actual evapotranspiration (AET). This study uses three conceptual rainfall-runoff models (GR4J, AWBM, and IHACRES_CMD) and five catchments in climatologically different regions of Australia to explore the role of ET process representation on the sensitivity of runoff to plausible future changes in PET. The changes in PET were simulated using the Penman-Monteith model and by perturbing each of the driving variables (temperature, solar radiation, humidity, and wind) separately. Surprisingly, the results showed the potential of a more than sevenfold difference in runoff sensitivity per unit change in annual average PET, depending on both the rainfall-runoff model and the climate variable used to perturb PET. These differences were largely due to different ways used to convert PET to AET in the conceptual rainfall-runoff models, with particular dependencies on the daily wet/dry status, as well as the seasonal variations in store levels. By comparing the temporal patterns in simulated AET with eddy-covariance-based observations at two of the study locations, we highlighted some unrealistic behavior in the simulated AET from AWBM. Such process-based evaluations are useful for scrutinizing the representation of physical processes in alternative conceptual rainfall-runoff models, which can be particularly useful for selecting models for projecting runoff under a changing climate. |
英文关键词 | evapotranspiration climate impact assessment GR4J AWBM IHACRES conceptual rainfall-runoff model AET simulation |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000394911200026 |
WOS关键词 | CLIMATE-CHANGE IMPACTS ; HYDROLOGICAL MODEL ; WATER-RESOURCES ; CATCHMENT ; UNCERTAINTY ; SENSITIVITY ; STREAMFLOW ; GROUNDWATER ; EVAPORATION ; PARAMETERS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21153 |
专题 | 资源环境科学 |
作者单位 | Univ Adelaide, Sch Civil Environm & Min Engn, North Terrace, Adelaide, SA, Australia |
推荐引用方式 GB/T 7714 | Guo, Danlu,Westra, Seth,Maier, Holger R.. Impact of evapotranspiration process representation on runoff projections from conceptual rainfall-runoff models[J]. WATER RESOURCES RESEARCH,2017,53(1). |
APA | Guo, Danlu,Westra, Seth,&Maier, Holger R..(2017).Impact of evapotranspiration process representation on runoff projections from conceptual rainfall-runoff models.WATER RESOURCES RESEARCH,53(1). |
MLA | Guo, Danlu,et al."Impact of evapotranspiration process representation on runoff projections from conceptual rainfall-runoff models".WATER RESOURCES RESEARCH 53.1(2017). |
条目包含的文件 | 条目无相关文件。 |
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