Energy-Based Approaches in Estimating Actual Evapotranspiration Focusing on Land Surface Temperature: A Review of Methods, Concepts, and Challenges

Mercedeh Taheri, Abdolmajid Mohammadian, Fatemeh Ganji, Mostafa Bigdeli and Mohsen Nasseri
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Mercedeh Taheri: School of Civil Engineering, College of Engineering, University of Tehran, Tehran 14155-6619, Iran
Abdolmajid Mohammadian: Department of Civil Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada
Fatemeh Ganji: Department of Civil Engineering, Iowa State University, Ames, IA 50011, USA
Mostafa Bigdeli: Department of Civil Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada
Mohsen Nasseri: School of Civil Engineering, College of Engineering, University of Tehran, Tehran 14155-6619, Iran

Energies, 2022, vol. 15, issue 4, 1-57

Abstract: The surface energy balance (SEB) model is a physically based approach in which aerodynamic principles and bulk transfer theory are used to estimate actual evapotranspiration. A wide range of different methods have been developed to parameterize the SEB equation; however, few studies addressed solutions to the SEB considering the land surface temperature (LST). Therefore, in the current review, a clear and comprehensive classification is provided for energy-based approaches considering the key role of LST in solving the energy budget. In this regard, three general approaches are presented using LSTs derived by climate and land surface models (LSMs), satellite-based data, and energy balance closure. In addition, this review surveys the concepts, required inputs, and assumptions of energy-based LSMs and SEB algorithms in detail. The limitations and challenges of aforementioned approaches including land surface temperature, surface energy imbalance, and calculation of surface and aerodynamic resistance network are also assessed. According to the results, since the accuracy of resulting LSTs are affected by weather conditions, surface energy closure, and use of vegetation/meteorological information, all approaches are faced with uncertainties in determining ET. In addition, for further study, an interactive evaluation of water and energy conservation laws is recommended to improve the ET estimation accuracy.

Keywords: evapotranspiration; land surface temperature; surface energy balance algorithms; land surface models (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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