[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 7, Issue 2 (9-2019) ::
2019, 7(2): 57-67 Back to browse issues page
Presenting a new equation for estimation of daily coefficient of evaporation pan using Gene Expression Programming and comparing it with experimental methods (Case Study: Birjand Plain)
Saeide Hosseinabadi , Abbas KHashei siuki
Abstract:   (1370 Views)
One of the most important componenets of water management in farms is estimating crops’ exact amount of  evapotranspiration (water need). The FAO-Penman-Montheis (FPM) method is a standard method to evaluate other techniques which are used for easy calculation of potential evapotranspiration, when lysimeter datasheets are not available. This study was carried out based on 18 years’ climatic data of Birjand (1998-2016), to determine the best experimental method based on coefficient of evaporation pan amongst methods proposed by Cuenica, Allen and Pruitt, Snyder and Orang. Then, the results were compared with the FPM method. The best method was used to assess the capabilities of gene expression method for prediction of daily coefficient of evaporation pan, which was the major goal of this study. The best equation for calculation of daily coefficient of evaporation pan was determined using these statistical factors: coefficient of determination, root mean squared error, mean absolute error, and percent error. The results showed that in Birjand’s climatic conditions, it is best to use the equation of generated by the gene expression method with a coefficient of determination of 0.77 and mean squared error of 0.021 millimeter per day.
Keywords: Allen and Pruitt, Cuenca, FAO Penman Monteith, Orang, Snyder
Full-Text [PDF 1088 kb]   (313 Downloads)    
Type of Study: Research | Subject: Special
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Hosseinabadi S, KHashei siuki A. Presenting a new equation for estimation of daily coefficient of evaporation pan using Gene Expression Programming and comparing it with experimental methods (Case Study: Birjand Plain) . Journal of Rainwater Catchment Systems. 2019; 7 (2) :57-67
URL: http://jircsa.ir/article-1-341-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 7, Issue 2 (9-2019) Back to browse issues page
مجله علمی سامانه های سطوح آبگیر باران Iranian Journal of Rainwater Catchment Systems
تکمیل و ارسال فرم تعارض منافع
نویسنده گرامی ، پس از ارسال مقاله ، جهت دریافت فرم، لطفا بر روی کلمه فرم تعارض منافع کلیک نمایید و پس از تکمیل، در فایل های پیوست مقاله قرار دهید.
Persian site map - English site map - Created in 0.04 seconds with 30 queries by YEKTAWEB 4331