WESTERN NORTH-AMERICA
; CLIMATE-CHANGE
; WATER-RESOURCES
; UNITED-STATES
; VARIABILITY
; MODEL
; PATTERNS
; PACIFIC
; DROUGHT
; TELECONNECTIONS
WOS学科分类:
Engineering, Environmental
; Geosciences, Multidisciplinary
; Water Resources
WOS研究方向:
Engineering
; Geology
; Water Resources
英文摘要:
The current study improves streamflow forecast lead-time by coupling climate information in a data-driven modeling framework. The spatial-temporal correlation between streamflow and oceanic-atmospheric variability represented by sea surface temperature (SST), 500-mbar geopotential height (Z(500)), 500-mbar specific humidity (SH500), and 500-mbar east-west wind (U-500) of the Pacific and the Atlantic Ocean is obtained through singular value decomposition (SVD). SVD significant regions are weighted using a nonparametric method and utilized as input in a support vector machine (SVM) framework. The Upper Rio Grande River Basin (URGRB) is selected to test the applicability of the proposed model for the period of 1965-2014. The April-August streamflow volume is forecasted using previous year climate variability, creating a lagged relationship of 1-13 months. SVD results showed the streamflow variability was better explained by SST and U-500 as compared to Z(500) and SH500. The SVM model showed satisfactory forecasting ability with best results achieved using a one-month lead to forecast the following four-month period. Overall, the SVM results showed excellent predictive ability with average correlation coefficient of 0.89 and Nash-Sutcliffe efficiency of 0.79. This study contributes toward identifying new SVD significant regions and improving streamflow forecast lead-time of the URGRB.
1.Southern Illinois Univ Carbondale, Dept Civil & Environm Engn, Carbondale, IL 62901 USA 2.NOAA Colorado Basin River Forecast Ctr, Weather Forecast, Salt Lake City, UT USA 3.Univ Virginia, Dept Engn Syst & Environm, Charlottesville, VA USA 4.WOOD PLC, Water Resources, Chantilly, VA USA
Recommended Citation:
Bhandari, Swastik,Thakur, Balbhadra,Kalra, Ajay,et al. Streamflow Forecasting Using Singular Value Decomposition and Support Vector Machine for the Upper Rio Grande River Basin[J]. JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION,2019-01-01,55(3):680-699