DOI: 10.5194/hess-18-3553-2014
Scopus记录号: 2-s2.0-84907060653
论文题名: Evaluating the utah energy balance (UEB) snow model in the noah land-surface model
作者: Sultana R ; , Hsu K ; -L ; , Li J ; , Sorooshian S
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2014
卷: 18, 期: 9 起始页码: 3553
结束页码: 3570
语种: 英语
Scopus关键词: Land surface models
; Snow models
; coupling
; energy balance
; land surface
; outflow
; simulation
; snow accumulation
; snow water equivalent
; snowmelt
; snowpack
; surface temperature
; United States
; Utah
英文摘要: Noah (version 2.7.1), the community landsurface model (LSM) of National Centers for Environmental Predictions-National Center for Atmospheric Research (NCEP-NCAR), which is widely used to describe the landsurface processes either in stand-alone or in coupled landatmospheric model systems, is recognized to underestimate snow-water equivalent (SWE). Noah's SWE bias can be attributed to its simple snow sub-model, which does not effectively describe the physical processes during snow accumulation and melt period. To improve SWE simulation in the Noah LSM, the Utah Energy Balance (UEB) snow model is implemented in Noah to test alternate snow surface temperature and snowmelt outflow schemes. Snow surface temperature was estimated using the force-restore method and snowmelt event is regulated by accounting for the internal energy of the snowpack. The modified Noah's SWE simulations are compared with the SWE observed at California's NRCS SNOTEL stations for 7 water years: 2002-2008, while the model's snow surface temperature is verified with observed surface-temperature data at an observation site in Utah. The experiments show that modification in Noah's snow process substantially reduced SWE estimation bias while keeping the simplicity of the Noah LSM. The results suggest that the model did not benefit from the alternate temperature representation but primary improvement can be attributed to the substituted snowmelt process. © 2014 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78140
Appears in Collections: 气候变化事实与影响
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作者单位: California State University, Long Beach, United States; University of California, Irvine, United States
Recommended Citation:
Sultana R,, Hsu K,-L,et al. Evaluating the utah energy balance (UEB) snow model in the noah land-surface model[J]. Hydrology and Earth System Sciences,2014-01-01,18(9)