globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-20-3245-2016
Scopus记录号: 2-s2.0-84981513407
论文题名:
Sensitivity of future continental United States water deficit projections to general circulation models, the evapotranspiration estimation method, and the greenhouse gas emission scenario
作者: Chang S; , Graham W; D; , Hwang S; , Munõz-Carpena R
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2016
卷: 20, 期:8
起始页码: 3245
结束页码: 3261
语种: 英语
Scopus关键词: Climate change ; Climate models ; Evapotranspiration ; Greenhouse gases ; Monte Carlo methods ; Sensitivity analysis ; Trajectories ; Water resources exploration ; General circulation model ; Influential factors ; Monte Carlo filtering ; Reference evapotranspiration ; Relative contribution ; Relative sensitivity ; Variance-based global sensitivity analysis ; Water resources planning ; Water resources ; climate change ; estimation method ; evapotranspiration ; future prospect ; general circulation model ; greenhouse gas ; Monte Carlo analysis ; precipitation (climatology) ; sensitivity analysis ; trajectory ; water planning ; water resource ; United States
英文摘要: Projecting water deficit under various possible future climate scenarios depends on the choice of general circulation model (GCM), reference evapotranspiration (ET0) estimation method, and Representative Concentration Pathway (RCP) trajectory. The relative contribution of each of these factors must be evaluated in order to choose an appropriate ensemble of future scenarios for water resources planning. In this study variance-based global sensitivity analysis and Monte Carlo filtering were used to evaluate the relative sensitivity of projected changes in precipitation (P), ET0, and water deficit (defined here as P-ET0) to choice of GCM, ET0 estimation method, and RCP trajectory over the continental United States (US) for two distinct future periods: 2030-2060 (future period 1) and 2070-2100 (future period 2). A total of 9 GCMs, 10 ET0 methods, and 3 RCP trajectories were used to quantify the range of future projections and estimate the relative sensitivity of future projections to each of these factors. In general, for all regions of the continental US, changes in future precipitation are most sensitive to the choice of GCM, while changes in future ET0 are most sensitive to the choice of ET0 estimation method. For changes in future water deficit, the choice of GCM is the most influential factor in the cool season (December-March), and the choice of ET0 estimation method is most important in the warm season (May-October) for all regions except the Southeast US, where GCMs and ET0 have approximately equal influence throughout most of the year. Although the choice of RCP trajectory is generally less important than the choice of GCM or ET0 method, the impact of RCP trajectory increases in future period 2 over future period 1 for all factors. Monte Carlo filtering results indicate that particular GCMs and ET0 methods drive the projection of wetter or drier future conditions much more than RCP trajectory; however, the set of GCMs and ET0 methods that produce wetter or drier projections varies substantially by region. Results of this study indicate that, in addition to using an ensemble of GCMs and several RCP trajectories, a range of regionally relevant ET0 estimation methods should be used to develop a robust range of future conditions for water resources planning under climate change. © 2016 Author(s).
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78764
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: Department of Agricultural and Biological Engineering, University of Florida, 570 Weil Hall, P.O. Box 116601, Gainesville, FL, United States; Water Institute, University of Florida, 570 Weil Hall, P.O. Box 116601, Gainesville, FL, United States; Department of Agricultural Engineering, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea; Department of Agricultural and Biological Engineering, University of Florida, 287 Frazier Rogers Hall, P.O. Box 110570, Gainesville, FL, United States

Recommended Citation:
Chang S,, Graham W,D,et al. Sensitivity of future continental United States water deficit projections to general circulation models, the evapotranspiration estimation method, and the greenhouse gas emission scenario[J]. Hydrology and Earth System Sciences,2016-01-01,20(8)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Chang S]'s Articles
[, Graham W]'s Articles
[D]'s Articles
百度学术
Similar articles in Baidu Scholar
[Chang S]'s Articles
[, Graham W]'s Articles
[D]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Chang S]‘s Articles
[, Graham W]‘s Articles
[D]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.