Comparative evaluation of different reference evapotranspiration models

Journal Title: Journal of Applied and Natural Science - Year 2017, Vol 9, Issue 1

Abstract

The study was carried out to select best alternative method for the estimation of reference evapotranspiration (ET0). Accurate estimation of potential evapotranspiration is a necessary step in water resource management. Recently, the FAO-56 version of Penman-Monteith equation has been established as a standard for calculating ref-erence evapotranspiration (ET0) which requires measurement of a number of meteorological parameters namely, air temperature, relative humidity, solar radiation, and wind speed which may not be available in most of the meteorological stations. Still there are different approaches (requiring less data) which estimate ET0 closely to Penman- Monteith (P-M) method for different climatological conditions. The present study is based on analysis of long term of 13 years (2000 to 2012) climatic data to calculate monthly reference evapotranspiration for Capsicum production (September–March) and also to compare the performance of evapotranspiration equations for Jhalawar district of Rajasthan with the standard FAO-56 Penman-Monteith method on the basis of the least root mean square error (RMSE) analysis. Hargreaves method and Pan evaporation (E-Pan) method overestimated the values of ETo when compared with FAO-56 Penman-Monteith method. On the basis of lowest value of RMSE, Pan evaporation method is found best alternative method to FAO-56 Penman-Monteith method in the study area.

Authors and Affiliations

C. K. Arya, R. C. Purohit, L. K. Dashora, P. K. Singh, Mahesh Kothari, Bhim Singh

Keywords

Related Articles

Algae: A potential source for nanoparticle synthesis

Nanotechnology deals with the particles of diameter size less than 100 nm. Nanoparticles are different from their bulk counterparts due to their distinctive shapes and sizes. They provide larger surface area, essential t...

Effect of different levels of customized fertilizer on soil nutrient availability, yield and economics of onion

A field experiment was conducted to study the effect of different levels of customized fertilizer (CF) on soil nutrient availability, yield and economics of onion. The results revealed that the significantly highest plan...

Soil quality indicators based recommendation to maximize sugarcane productivity in Theni district of Tamil Nadu, India

An assessment study was conducted in five sugarcane yielding blocks of theni district viz., Jeyamangalam, P.C.Patti, Chinnamanur, Andipatti and Usilampatti.The cane yielding zones of the district was classified into thre...

Determination of economic threshold level for the timely management of cotton jassid Amrasca bigutulla (Ishida) on okra vegetable crop

A field study was carried out at Vegetable Research Farm PAU, Ludhiana to determine the economic threshold level for the timely management of cotton jassid Amrasca bigutulla (Ishida) on okra vegetable crop. It was observ...

Phytochemistry, antibacterial and anticoagulase activities of Sida acuta against clinical isolates of Staphylococcus aureus

The phytochemical, antibacterial and anticoagulase activities of Sida acuta against clinical isolates of Staphylococcus aureus were investigated. The phytochemistry of the plant leaves revealed that S. acuta is laden wit...

Download PDF file
  • EP ID EP286618
  • DOI 10.31018/jans.v9i1.1239
  • Views 121
  • Downloads 0

How To Cite

C. K. Arya, R. C. Purohit, L. K. Dashora, P. K. Singh, Mahesh Kothari, Bhim Singh (2017). Comparative evaluation of different reference evapotranspiration models. Journal of Applied and Natural Science, 9(1), 609-613. https://europub.co.uk/articles/-A-286618