| Registro completo |
| Provedor de dados: |
CIGR Journal
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| País: |
China
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| Título: |
Evaluation of Valiantzas ET0 Equations against FAO56-PM Model in Indian Semi-arid Climatic Conditions
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| Autores: |
TOMAR, ARVIND SINGH
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| Data: |
2021-09-26
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| Ano: |
2021
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| Palavras-chave: |
Valiantzas equations
Reference evapotranspiration
Semi-arid
Hissar
Parbhani
India
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| Resumo: |
In this study, performance of three forms of Valiantzas ET0 equations namely, (i) requiring full meteorological dataset, (ii) not requiring wind speed data, and (iii) not requiring both wind speed & relative humidity data for Indian semi-arid Hissar and Parbhani districts in comparison to widely accepted FAO-56 PM model was evaluated in terms of different statistical indices and their ranking based on GPI values. All Valiantzas ET0 equations requiring full meteorological dataset under-estimated FAO56-PM estimates in the range of 9.10 to 21.84% at Hissar while they over-estimated it in the range of 0.98 to 8.32% at Parbhani district. Valiantzas equations not requiring wind speed data under-estimated FAO56-PM ET0 values in the range of 3.90 to 34.56% at Hissar and over-estimated the same in the range of 11.55 to 41.28% at Parbhani. The Valiantzas equations not requiring both wind speed & relative humidity data under-estimated FAO56-PM ET0 estimates in the range of 23.80 to 57.56% at Hissar and over-estimated it in the range of -1.80 to 6.96% at Parbhani district. Among all 16 considered Valiantzas ET0 equations, Val 7 and Val 2 (equations requiring full meteorological dataset) showed best performance at Hissar and Parbhani districts, respectively while Val 16 (equation not requiring both wind speed & relative humidity data) and Val 9 (representing Valiantzas equations not requiring wind speed data) were adjudged worst at Indian semi-arid Hissar and Parbhani districts, respectively.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.cigrjournal.org/index.php/Ejounral/article/view/6651
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| Editor: |
International Commission of Agricultural and Biosystems Engineering
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| Relação: |
http://www.cigrjournal.org/index.php/Ejounral/article/view/6651/3659
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| Formato: |
application/pdf
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| Fonte: |
Agricultural Engineering International: CIGR Journal; Vol. 23 No. 3 (2021): CIGR Journal
1682-1130
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| Direitos: |
Copyright (c) 2021 Agricultural Engineering International: CIGR Journal
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