globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2016MS000842
Scopus记录号: 2-s2.0-85018298005
论文题名:
Evaluation of modeled land-atmosphere exchanges with a comprehensive water isotope fractionation scheme in version 4 of the Community Land Model
作者: Wong T; E; , Nusbaumer J; , Noone D; C
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期:2
起始页码: 978
结束页码: 1001
语种: 英语
英文关键词: Climate models ; Isotopes ; Kinetics ; Moisture ; Soil moisture ; Soils ; Surface measurement ; Surface waters ; Uncertainty analysis ; Vegetation ; CLM4 ; Data assimilation ; Kinetic fractionations ; Land surface modeling ; Water isotope ; Soil surveys ; atmosphere-biosphere interaction ; data assimilation ; data set ; evapotranspiration ; hydrogen isotope ; isotopic fractionation ; isotopic ratio ; land surface ; numerical model ; parameterization ; soil moisture ; stable isotope ; surface water
英文摘要: All physical process models and field observations are inherently imperfect, so there is a need to both (1) obtain measurements capable of constraining quantities of interest and (2) develop frameworks for assessment in which the desired processes and their uncertainties may be characterized. Incorporation of stable water isotopes into land surface schemes offers a complimentary approach to constrain hydrological processes such as evapotranspiration, and yields acute insight into the hydrological and biogeochemical behaviors of the domain. Here a stable water isotopic scheme in the National Center for Atmospheric Research's version 4 of the Community Land Model (CLM4) is presented. An overview of the isotopic methods is given. Isotopic model results are compared to available data sets on site-level and global scales for validation. Comparisons of site-level soil moisture and isotope ratios reveal that surface water does not percolate as deeply into the soil as observed in field measurements. The broad success of the new model provides confidence in its use for a range of climate and hydrological studies, while the sensitivity of simulation results to kinetic processes stands as a reminder that new theoretical development and refinement of kinetic effect parameterizations is needed to achieve further improvements. © 2017. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75766
Appears in Collections:影响、适应和脆弱性
气候变化与战略

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作者单位: Department of Applied Mathematics, University of Colorado, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Now at: Earth and Environmental Systems Institute, Pennsylvania State University, University Park, PA, United States; Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, United States; Now at: NASA Goddard Institute for Space Studies, New York, NY, United States; Now at: College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States

Recommended Citation:
Wong T,E,, Nusbaumer J,et al. Evaluation of modeled land-atmosphere exchanges with a comprehensive water isotope fractionation scheme in version 4 of the Community Land Model[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(2)
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