DOI: 10.1002/2016MS000773
Scopus记录号: 2-s2.0-85010711596
论文题名: Reexamination and further development of two-stream canopy radiative transfer models for global land modeling
作者: Yuan H ; , Dai Y ; , Dickinson R ; E ; , Pinty B ; , Shangguan W ; , Zhang S ; , Wang L ; , Zhu S
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期: 1 起始页码: 113
结束页码: 129
语种: 英语
英文关键词: Infrared devices
; Intelligent systems
; Monte Carlo methods
; Optical properties
; Snow
; Solar radiation
; Canopy radiative transfer
; Canopy transmittance
; Community land models
; Comparison result
; Leaf optical property
; Near infrared band
; Two-stream approximation
; Vegetation canopy
; Radiative transfer
; albedo
; comparative study
; environmental modeling
; global perspective
; land surface
; model test
; MODIS
; parameterization
; radiative transfer
; satellite data
; vegetation dynamics
英文摘要: Four representative two-stream canopy radiative transfer models were examined and intercompared using the same configuration. Based on the comparison results, two modifications were introduced to the widely used Dickinson-Sellers model and then incorporated into the Community Land Model (CLM4.5). The modified model was tested against Monte-Carlo simulations and produced significant improvements in the simulated canopy transmittance and albedo values. In direct comparison with MODIS albedo data, the modified model shows good performance over most snow/ice-free vegetated areas, especially for regions that are covered by dense canopy. The modified model shows seasonally dependent behavior mainly in the near-infrared band. Thus, the improvements are not present in all seasons. Large biases are still noticeable in sparsely vegetated areas, in particular for the snow/ice covered regions, that is possibly related to the model, the land surface input data, or even the observations themselves. Further studies focusing on the impact of the seasonal changes in leaf optical properties, the parameterizations for snow/ice covered regions and the case of sparsely vegetated areas, are recommended. © 2016. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75807
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: School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China; Department of Geological Sciences, University of Texas at Austin, Austin, TX, United States; European Commission, Joint Research Centre, Directorate for Sustainable Resources, Knowledge for Sustainable Development and Food Security, Ispra, Varese, Italy; College of Global Change and Earth System Science, Beijing Normal University, Beijing, China
Recommended Citation:
Yuan H,, Dai Y,, Dickinson R,et al. Reexamination and further development of two-stream canopy radiative transfer models for global land modeling[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(1)