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	A new parameterization scheme for estimating surface energy fluxes with continuous surface temperature, air temperature, and surface net radiation measurements
	Lu J. ; Tang R. L. ; Tang H. J. ; Li Z. L.
	2014
关键词	evapotranspiration parameterization surface energy balance minimization technique split-window algorithm remote-sensing data msg-seviri data evapotranspiration estimation data assimilation regional evapotranspiration evaporative fraction thermal inertia satellite data heat fluxes
英文摘要	This study develops a method for estimating surface energy fluxes (surface sensible heat flux (H), latent heat flux (LE), and soil heat flux (G)) simultaneously from continuous observations of surface temperature (T-s), air temperature (T-a), and net radiation (R-n) without calculating various resistances. First, H, LE, and G are parameterized by some constant parameters that remain fairly invariant during a given day and some known functions related to T-s and T-a. Second, these constant parameters are solved by a minimization technique based on surface energy balance. Data from ground-based measurements at the Yucheng station were used to evaluate the performance of the developed method. Results show that the simplified parameterization schemes well reproduce H, LE, and G with a root mean square error (RMSE) of approximate to 20 W/m(2) at the instantaneous time scale, and perform better at the daily scale. For the estimates of H, LE, and G using the known T-s, T-a, and R-n measured at the Yucheng station as inputs, the RMSE is approximate to 60 W/m(2) at the instantaneous time scale and approximate to 20 W/m(2) at the daily scale. The requirement of continuous observations throughout a day in the developed method could be met by remotely sensed data from geostationary meteorological satellites. Fewer input variables and the obviation of calculating various resistances give the method the potential to generate surface fluxes over a large area. Key Points Parameterization schemes of surface energy fluxes are simplified Surface energy fluxes are estimated without calculating resistances Fewer input variables are required
出处	Water Resources Research
卷	50
期	2
页	1245-1259
收录类别	SCI
语种	英语
ISSN号	0043-1397
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/29697]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Lu J.,Tang R. L.,Tang H. J.,et al. A new parameterization scheme for estimating surface energy fluxes with continuous surface temperature, air temperature, and surface net radiation measurements. 2014.

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