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Comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study


Saghravani, Seyed Reza and Mustapha, Sa'ari and Ibrahim, Shaharin and Randjbaran, Elias (2009) Comparison of daily and monthly results of three evapotranspiration models in tropical zone: a case study. American Journal of Environmental Sciences, 5 (6). pp. 698-705. ISSN 1553-345X; ESSN: 1558-3910


Problem statement: Evapotranspiration (ET) has crucial role in agricultural activity, water management and hydraulic engineering. Recently many forms of the equation have been applied for estimating daily and monthly evapotranspiration around the world. Approach: In this study, the daily and monthly ET was estimated by Penman, Penman-Monteith (P&M) and Hargreaves equation to evaluate general relationships for estimating monthly and daily values of these 3 methods and also effect of different parameters such as Humidity and wind speed on fluctuation of ET. Results: The results showed that maximum and minimum values were belonging to Hargreaves and P&M models, respectively. Conclusion: Statistical analysis showed significant difference among the three methods and coefficient variant for daily and monthly analysis was 18.49 and 7.17 respectively. However, the difference between mean value of P&M and Hargreaves, that has the most different, is 1 mm year−1.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Environmental Studies
DOI Number: https://doi.org/10.3844/ajessp.2009.698.705
Publisher: Science Publications
Keywords: Penman; Penman-Monteith; Hargreaves; Equation; Serdang; Malaysia
Depositing User: Nabilah Mustapa
Date Deposited: 07 May 2015 10:55
Last Modified: 06 Dec 2017 03:08
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3844/ajessp.2009.698.705
URI: http://psasir.upm.edu.my/id/eprint/13688
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