干旱区生态环境知识资源中心(Arid): Assessing the Complementary Role of Surface Flux Equilibrium (SFE) Theory and Maximum Entropy Production (MEP) Principle in the Estimation of Actual Evapotranspiration

Arid

DOI	10.1029/2022MS003224
	Assessing the Complementary Role of Surface Flux Equilibrium (SFE) Theory and Maximum Entropy Production (MEP) Principle in the Estimation of Actual Evapotranspiration
	Kim, Yeonuk; Garcia, Monica; Black, T. Andrew; Johnson, Mark S. S.
通讯作者	Kim, Y
来源期刊	JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
EISSN	1942-2466
出版年	2023
卷号	15 期号:7
英文摘要	Although evapotranspiration (ET) from the land is a key variable in Earth system models, the accurate estimation of ET based on physical principles remains challenging. Parameters used in current ET models are largely empirically based, which could be problematic under rapidly changing climatic conditions. Here, we propose a physically based ET model that estimates ET based on the surface flux equilibrium (SFE) theory and the maximum entropy production (MEP) principle. We derive an expression for aerodynamic resistance based on the MEP principle, then propose a novel ET model that integrates the SFE model and the MEP principle. The proposed model, which is referred to as the SFE-MEP model, becomes equivalent to the MEP state in non-equilibrium conditions when turbulent mixing is weak and the land surface is dry. Under conditions meeting land-atmosphere equilibrium, the SFE-MEP model is similar to ET estimation based on the SFE model. This blended nature of the SFE-MEP ET model allows accurate ET estimation for most inland regions by overcoming the ET overestimation issue of the SFE model in dry conditions. As a result, the SFE-MEP model significantly improves the performance of SFE ET estimation, particularly for arid regions. The proposed model and its high accuracy of ET estimation enable novel insight into various Earth system models as it does not require any empirical parameters and only uses readily obtainable meteorological variables including reference height air temperature, relative humidity, available energy, and radiometric surface temperature.
英文关键词	evapotranspiration evaporation surface flux equilibrium maximum entropy production atmospheric boundary layer land-atmosphere coupling
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001025093600001
WOS关键词	ENERGY-BALANCE ; EVAPORATION ; TEMPERATURE ; MODEL ; WATER ; CLOSURE
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397094
推荐引用方式 GB/T 7714	Kim, Yeonuk,Garcia, Monica,Black, T. Andrew,et al. Assessing the Complementary Role of Surface Flux Equilibrium (SFE) Theory and Maximum Entropy Production (MEP) Principle in the Estimation of Actual Evapotranspiration[J],2023,15(7).
APA	Kim, Yeonuk,Garcia, Monica,Black, T. Andrew,&Johnson, Mark S. S..(2023).Assessing the Complementary Role of Surface Flux Equilibrium (SFE) Theory and Maximum Entropy Production (MEP) Principle in the Estimation of Actual Evapotranspiration.JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS,15(7).
MLA	Kim, Yeonuk,et al."Assessing the Complementary Role of Surface Flux Equilibrium (SFE) Theory and Maximum Entropy Production (MEP) Principle in the Estimation of Actual Evapotranspiration".JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS 15.7(2023).