DOI: 10.1016/j.jag.2015.11.015
Scopus记录号: 2-s2.0-84988723468
论文题名: A method for sensible heat flux model parameterization based on radiometric surface temperature and environmental factors without involving the parameter KB−1
作者: Zhuang Q ; , Wu B ; , Yan N ; , Zhu W ; , Xing Q
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2016
卷: 47 起始页码: 50
结束页码: 59
语种: 英语
英文关键词: Environmental factors
; Heihe river basin
; Radiometric surface temperature
; Sensible heat flux
Scopus关键词: boundary layer
; environmental factor
; heat transfer
; numerical model
; parameterization
; sensible heat flux
; surface temperature
; vapor pressure
; China
; Gansu
; Heihe Basin
; Zea mays
英文摘要: Sensible heat flux is a key component of land–atmosphere interaction. In most parameterizations it is calculated with surface-air temperature differences and total aerodynamic resistance to heat transfer (Rae) that is related to the KB−1 parameter. Suitable values are hard to obtain since KB−1 is related both to canopy characteristics and environmental conditions. In this paper, a parameterize method for sensible heat flux over vegetated surfaces (maize field and grass land in the Heihe river basin of northwest China) was proposed based on the radiometric surface temperature, surface resistance (Rs) and vapor pressures (saturated and actual) at the surface and the atmosphere above the canopy. A biophysics-based surface resistance model was revised to compute surface resistance with several environmental factors. The total aerodynamic resistance to heat transfer is directly calculated by combining the biophysics-based surface resistance and vapor pressures. One merit of this method is that the calculation of KB−1 can be avoided. The method provides a new way to estimate sensible heat flux over vegetated surfaces and its performance compares well to the LAS measured sensible heat and other empirical or semi-empirical KB−1 based estimations. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80106
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth (RADI), Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Zhuang Q,, Wu B,, Yan N,et al. A method for sensible heat flux model parameterization based on radiometric surface temperature and environmental factors without involving the parameter KB−1[J]. International Journal of Applied Earth Observation and Geoinformation,2016-01-01,47