Analisa Model Evaporasi dan Evapotranspirasi Menggunakan Pemodelan Matematika pada Visual Basic di Kabupaten Maros

Analysis of Evaporation and Evapotranspiration Model Using Mathematical Modeling on Visual Basic in Maros Regency

  • Ahmad Fausan Institut Pertanian Bogor
  • Budi Indra Setiawan IPB University
  • Chusnul Arif IPB University
  • Satyanto Krido Saptomo IPB University
Keywords: evaporation, evapotranspiration, visual basic

Abstract

The approach to calculating evaporation and evapotranspiration, both potential and actual, varies widely. The models used to estimate the amount of evapotranspiration, particularly at the Maros Climatology Station, Maros Regency, South Sulawesi. Evaporation models use the Penman, Priestley, Bruin, and Valiantzas models while evapotranspiration models use the Penman, Hargreaves, Jensen-Haise, Penman-Monteith, Radiation, Turc, and Makkink models, where all of these methods use climate data, such as are the minimum temperature (Tn), maximum temperature (Tx), air temperature (Ta), average humidity (RH), rainfall (R), duration of sun exposure (SS), and maximum wind speed (U) in calculations using Visual basic program in Microsoft Excel in the form of code. Thus, it is necessary to conduct an analysis of the suitability of the model to the results of the observations in order to find out which model is suitable according to the results of the largest coefficient of determination (R2). Based on the results of the model suitability analysis, a selected model was obtained, namely the Valiantzas model with a value of 0.980 in the evaporation calculation and the Jensen-Haise model, namely 0.889.

Downloads

Download data is not yet available.

References

Bruin K. 1979. The Priestley-Taylor evaporation model applied to a large shallow lake in the Netherland. Journal of Applied Meteorology. 18 : 898-903.

Capece CL. 2002. Comparison of Evapotranspiration Estimation Methods. Yogyakarta (ID) : Kanisius.

Doorenbos, P. (1977). Guideline fo Predicting Crop Water Requirement. Rome (IT) : FAO.

Penman HL. 1948. Natural evaporation from open water, bare soil and grass. Proceedings of the Royal Society, (pp. 120 - 145).

Priestley T. 1972. On the assessment of surfave heat flux and evaporation using large-scale parameters. Jurnal Monthly Weather Review. 100 : 81-92.

Riang MS. 2014. Analisa faktor-faktor yang mempengaruhi hasil produksi padi di Deli Serdang. Saintia Matematika. 2 (1) : 71 - 83.

Rokhma. 2008. Menyelamatkan Pangan dengan Irigasi Hemat. Yogyakarta (ID) : Kanisius.

Singh X. 1997. Evaluation and Generalization of 13 Mass-transfer Equations for determining free water evaporation. Hydrological Processes. 11 : 311-323.

Sujana. 2001. Metode Statistik. Bandung (ID) : Tarsito.

Valiantzas. 2006. Simplified version for the Penman evaporation equation using routine weather data. Journal of Hydrology. 331, 3 - 15.

Zain S. 1995. Ekonometrika Dasar. Jakarta (ID) : Erlangga.

Published
2021-04-08
How to Cite
1.
Ahmad Fausan, Setiawan BI, Arif C, Saptomo SK. Analisa Model Evaporasi dan Evapotranspirasi Menggunakan Pemodelan Matematika pada Visual Basic di Kabupaten Maros: Analysis of Evaporation and Evapotranspiration Model Using Mathematical Modeling on Visual Basic in Maros Regency. JSIL [Internet]. 2021Apr.8 [cited 2021Dec.6];5(3):179-96. Available from: https://ilkom.journal.ipb.ac.id/index.php/jsil/article/view/33885
Section
Research Articles

Most read articles by the same author(s)