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Journal : Jurnal Ilmiah Rekayasa Pertanian dan Biosistem

Comparison of Empirical Methods to Estimated Reference Evapotranspiration Fitriani, Vivi; Bowo, Cahyoadi; Mandala, Marga; Gandri, La
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 12 No 2 (2024): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jrpb.v12i2.629

Abstract

Evapotranspiration plays an important role in agricultural water management and crop modelling. Estimating reference Evapotranspiration (ETo) using meteorological variables, both theoretical and empirical methods, is highly recommended considering the availability of weather data in several locations. The estimation method recommended as the standard method is FAO Penman Monteith (FAOPM), but due to the limited meteorological data in a region and the difficulty and complexity of FAOPM, it is recommended to use the empirical method which is easier and only requires a few simple meteorological variables. The aim of this research is to compare and evaluated empirical methods for estimating ETo against the FAOPM. The statistical analysis using in this research are RSME, MAE, coefficient Correlation, NSE, Average bias, index of agreement, and confidence index (c). Evaluation for the best models based on statistic analyzed shows that several empirical methods show terrible performance in estimating the monthly average ETo (mm/day), which are Thornthwaite-Mather, Hargraves-Samani, Makkink, Hamon, Romaneko, and Kharauffa. Modified Blaney-Criddle method showed a good performance method, while PMAWS showed very good performance The Turc and Hansen method showed excellent performance with RMSE, MAE, NSE, and C values ​​for the Turc method, are 0.12, 0.11, 0.78, 0.92 respectively, and for the Hansen method are 0.12, 0.1, 0.8, and 0.89 respectively.
Co-Authors Abdul Manan Abdul Manan Abdul Sakti AGUS SETIAWAN Agusrinal Agusrinal Agustina, Dinda Tri Ahmaliun, La De Ahmaliun, Lade Aindo, Nur Rezki Albasri Albasri Alinda F. M. Zain Arif, Laode Kasno Arman Arman Arniawati, Arniawati Asramid Yasin Asrianti Arif Astika, Aci Bambang Sulistyantara Bana, Sahindomi Basri, Al BASUKI BASUKI Cahyoadi Bowo DEWI FITRIANI Eka Rahmatiah Tuwu Fahidu, Wa Ode Hastiani Fatahuddin, Muhammad Findra, Muhammad Nur Gafaruddin, Abdul Hadjar, Nurhayati Hafidah Nur Hasani, Umar Ode Hasbullah Syaf Hasbullah Syaf Hasbullah, Hasbullah Syaf Haslianti Haslianti, Haslianti Herlan Hidayat Herlan Hidayat Herlan Hidayat Hidayat, Herlan Irawati Irawati Irawati Irawati Jaluwi, La Jufri Karim Junartin Teke Junartin Teke Junartin, Junartin Teke Kahirun, Kahirun Kasim, Safril La Baco S La De Ahmaliun La De Ahmaliun La Ode Alwi La Ode Bahana Adam La Ode Kasno Arif La Ode Kasno Arif, La Ode Kasno La Ode Midi, La Ode La Ode Muhammad Erif Lade Ahmaliun Lade Ahmaliun Laily Mutmainnah Laksananny, Satya Agustina Laode , Laode Sabaruddin Laode Sabaruddin Lies , Lies Indriyani Lies Indriyani Lisdayani, Mira Mandala, Marga Mega Redi Jaya Muhaimin Hamzah Muhamad Saleh Qadri Muhammad Saleh Qadri Muhsimin Muhsimin, Muhsimin Munara, Agil Aqshan Nor Musram Abadi Nikoyan, Anas NUR ARAFAH Nur Arafah Nur Arafah Nur Arafah Nurhayati Hajar Ode Hasani, Umar Padang, Jois Liling Putri, Amelia Retno Eka Putri, Sarwinda Intan Qadri, Muhamad Saleh Qadri, Muhammad Saleh Rahmatiah Tuwu, Eka Risnawati Risnawati RR. Ella Evrita Hestiandari Safril Kasim Sahindomi , Sahindomi Bana Saleh Qadri, Muhammad Sanjaya, Rifky Siwi, La Ode Syaf , Hasbullah Syafrul Tawakal, Achmad Teke, Junartin Tiku, Evi Indiriyani Tuwu, Eka Rahmatiah Umar Ode Hasani Umar Ode Hasani Umar Ode Hasani Vivi Fitriani Vivi Fitriani Wa Ode , Wa Ode Nur Hasanah Wa Ode Hastiani Fahidu Wa Ode Nur Hasanah