A Comparison of Various Evapotranspiration Models for Estimating Reference Evapotranspiration in Sokoto, North Western, Nigeria

Akpootu, D. O.; Iliyasu, M

doi:10.9734/psij/2017/32720

Cited by 9 publications

(2 citation statements)

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“…Jensen-Haise and Thoruthwaite has most difference by PM FAO-56. In another studies, Akpootu and Iliyasu [7] compared various universal accepted ET models for estimating ETo, they consider in their study, six models for estimating ETo for Sokoto, using meteorological parameter of monthly average daily global solar radiation, sunshine hour, wind speed, maximum and minimum temperature and relative humidity covering a period of thirty -one years . Their result shows that blaney-morin Nigeria model can also be used in place of FAO-56 PM model for estimating ETo in Sokoto.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study for Estimating Reference Evapotranspiration Models over Kano, Nigeria

Abdulsalam,

Akpootu,

Aliyu

et al. 2023

JENRR

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The major factor faced by Agricultural activities is water scarcity. Water is very essential in Agricultural activities (plantation), crop acquires water naturally by precipitation and subsurface moisture, when the supply of water is inadequate for crop use, mostly results to irrigation. This present study estimates and compares six various universally accepted models for estimating reference evapotranspiration (ET0) for Kano situated in the Sahelian climatic zone of Nigeria using measured meteorological parameters of monthly average daily global solar radiation, sunshine hour, wind speed, minimum and maximum temperatures and relative humidity covering a period of thirty one years (1988 – 2018). Four different statistical validation indices of Root Mean Square Error (RMSE), Mean Bias Error (MBE), Mean Absolute Error (MAE) and coefficient of correlation (R) were carried out to test the accuracy of the evaluated models. The result indicated that high value of ETo was found in the month of April with 10.0256 mm/day for Kano and a low value was found to be in August with 5.0804 mm/day for Kano. The Blaney – Morin Nigeria model was found more accurate for Kano with RMSE, MBE, MAE and R values as 1.5078 mm/day, -1.4634 mm/day, 1.4634 mm/day and 0.9790 respectively.

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Section: Introductionmentioning

confidence: 99%

A Comparative Study for Estimating Reference Evapotranspiration Models over Kano, Nigeria

Abdulsalam,

Akpootu,

Aliyu

et al. 2023

JENRR

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show abstract

“…Some notable studies carried out in Nigeria as regards the estimation of ET o include, e.g., Akpootu and Iliyasu (2017), Ejieji (2011), andAdeboye et al (2009). All these studies succeeded in comparing many ET o models with the FAO-PM 56 without actually calibrating or developing a localized ET o for any region in Nigeria.…”

Section: Introductionmentioning

confidence: 99%

Spatio-temporal calibration of Hargreaves–Samani model in the Northern Region of Nigeria

Ogunrinde

Emmanuel

Enaboifo

et al. 2021

Theor Appl Climatol

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One of the significant components of the hydrological cycle is evapotranspiration. Monthly meteorological parameters of 35 years from 19 meteorological stations across the Northern Region of Nigeria (NRN) were obtained and utilized for the calibration of Hargreaves–Samani (HS) model by comparing between potential evapotranspiration (ETo) values estimated from the original HS and the Penman–Monteith (FAO-56 PM) models. The calibrated HS equation was assessed using trend patterns and some statistical indices. The average value of root mean square error (RMSE) and the mean absolute error (MAE) decreased by 37.1 and 40%, respectively, after the calibration of the model. Also, the correlation coefficients (R) of stations that had values > 0.8 increased from 6 to 11 and the minimum R value increased by 12% above that of the original HS equation. The trend and spatial map of the statistical tests conducted also indicate better performance in most climatic regions after calibration. The precision of the HS equation improved significantly after calibration for semi-arid, humid, and sub-humid regions. However, few stations in the semi-arid, humid, and sub-humid regions did not show drastic improvement due to the peculiarity of the location and high variations in the wind speed and relative humidity parameters.

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Prediction model for daily reference crop evapotranspiration based on hybrid algorithm and principal components analysis in Southwest China

Zhao

Zhou

et al. 2021

Computers and Electronics in Agriculture

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A Comparison of Various Evapotranspiration Models for Estimating Reference Evapotranspiration in Sokoto, North Western, Nigeria

Cited by 9 publications

References 0 publications

A Comparative Study for Estimating Reference Evapotranspiration Models over Kano, Nigeria

A Comparative Study for Estimating Reference Evapotranspiration Models over Kano, Nigeria

Spatio-temporal calibration of Hargreaves–Samani model in the Northern Region of Nigeria

Prediction model for daily reference crop evapotranspiration based on hybrid algorithm and principal components analysis in Southwest China

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