DOI: 10.1029/2017JF004482
Scopus记录号: 2-s2.0-85047646841
论文题名: Enhancement of a Parsimonious Water Balance Model to Simulate Surface Hydrology in a Glacierized Watershed
作者: Valentin M.M. ; Viger R.J. ; Van Beusekom A.E. ; Hay L.E. ; Hogue T.S. ; Foks N.L.
刊名: Journal of Geophysical Research: Earth Surface
ISSN: 21699003
出版年: 2018
卷: 123, 期: 5 起始页码: 1116
结束页码: 1132
语种: 英语
英文关键词: Alaska
; Copper River
; glacier
; hydroclimatology
; hydrology
; water balance
Scopus关键词: climatology
; computer simulation
; evapotranspiration
; glacier
; hydrology
; numerical model
; snow
; streamflow
; water budget
; water storage
; watershed
; Alaska
; Copper River
; United States
英文摘要: The U.S. Geological Survey monthly water balance model (MWBM) was enhanced with the capability to simulate glaciers in order to make it more suitable for simulating cold region hydrology. The new model, MWBMglacier, is demonstrated in the heavily glacierized and ecologically important Copper River watershed in Southcentral Alaska. Simulated water budget components compared well to satellite-based observations and ground measurements of streamflow, evapotranspiration, snow extent, and total water storage, with differences ranging from 0.2% to 7% of the precipitation flux. Nash Sutcliffe efficiency for simulated and observed streamflow was greater than 0.8 for six of eight stream gages. Snow extent matched satellite-based observations with Nash Sutcliffe efficiency values of greater than 0.89 in the four Copper River ecoregions represented. During the simulation period 1949 to 2009, glacier ice melt contributed 25% of total runoff, ranging from 12% to 45% in different tributaries, and glacierized area was reduced by 6%. Statistically significant (p < 0.05) decreasing and increasing trends in annual glacier mass balance occurred during the multidecade cool and warm phases of the Pacific Decadal Oscillation, respectively, reinforcing the link between climate perturbations and glacier mass balance change. The simulations of glaciers and total runoff for a large, remote region of Alaska provide useful data to evaluate hydrologic, cryospheric, ecologic, and climatic trends. MWBM glacier is a valuable tool to understand when, and to what extent, streamflow may increase or decrease as glaciers respond to a changing climate. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114044
Appears in Collections: 气候减缓与适应
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作者单位: Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, United States; U.S. Geological Survey, Lakewood, CO, United States; Hydrologic Sciences and Engineering, Colorado School of Mines, Golden, CO, United States; Apogee Engineering, Colorado Springs, CO, United States
Recommended Citation:
Valentin M.M.,Viger R.J.,Van Beusekom A.E.,et al. Enhancement of a Parsimonious Water Balance Model to Simulate Surface Hydrology in a Glacierized Watershed[J]. Journal of Geophysical Research: Earth Surface,2018-01-01,123(5)