Predicting Potential Evapotranspiration for Kalaburagi District using a Seasonal Arima Model

Shrikant *

Department of Agriculture Engineering, Reva University, Bangalore, India.

G. V. Srinivasa Reddy

Department of Irrigation and Drainage Engineering, CAE, UAS, Raichur, India.

M. K. Manjunath

Department of Soil and Water Engineering, CAE, UAS, Raichur, India.

Rahul Patil

Department of Soil and Water Engineering, CAE, UAS, Raichur, India.

Prasad S. Kulkarni

Department of Irrigation and Drainage Engineering, CAE, UAS, Raichur, India.

*Author to whom correspondence should be addressed.


Forecasting potential evapotranspiration (PET) is of great importance in effectively managing irrigation systems. This article centers around models designed to simulate future PET levels for the Kalaburagi district. The study calculates potential evapotranspiration using temperature data in degrees Celsius, employing the Thornthwaite method, and prediction is performed using the Seasonal Autoregressive Moving Average (SARIMA) method. These models are developed based on autocorrelation function (ACF) and partial autocorrelation function (PACF) analysis. Model selection is based on minimizing Akaike Information Criteria (AIC) and Bayesian Information Criteria (BIC) values. The chosen models for different stations in Kalaburagi, Chincholi, Sedam, Chittapur, Aland, Jewargi, and Afzalpur respectively are SARIMA (1,0,1)(2,1,0)12, SARIMA(1,0,1)(2,1,0)12, SARIMA(1,0,0)(2,1,0)12, SARIMA(1,0,1)(2,1,0)12, SARIMA (1,0,1) (2,1,0) 12, and SARIMA(1,0,1)(2,1,0)12. The results indicate that the models developed for Jewargi and Chincholi stations show particular promise compared to the other two stations, with all four models performing well. These models have the potential to significantly enhance decision-making in irrigation planning and command area management practices, contributing to improved water resource management.


How to Cite

Shrikant, Reddy , G. V. S., Manjunath , M. K., Patil , R., & Kulkarni , P. S. (2023). Predicting Potential Evapotranspiration for Kalaburagi District using a Seasonal Arima Model. International Journal of Environment and Climate Change, 13(11), 2073–2082.


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