کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6540613 158864 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Independent testing for assessing the calibration of the Hargreaves-Samani equation: New heuristic alternatives for Iran
ترجمه فارسی عنوان
تست مستقل برای ارزیابی کالیبراسیون معادله هارگریوز-سامانی: گزینه های جدید اکتشافی برای ایران
کلمات کلیدی
کالیبراسیون، تبخیر تعرق، آموزش خارجی آموزش محلی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
There is multitude of models for estimating daily reference evapotranspiration (ET0) using meteorological parameters. Among others, the temperature-based Hargreaves-Samani (HS) model is one of the frequently applied models for estimating ET0 when meteorological parameters in the studied station are limited. However, this method tends to require a preliminary local calibration. Most calibration procedures usually apply the same data sets for calibrating and testing. At the most, some studies reserve an independent test set for evaluating the calibrated model, but considering a single data set assignment. In the present study, the HS model and its calibrated version were assessed using meteorological parameters from 29 weather stations in Iran, through complete temporal and spatial data scanning, using a k-fold testing approach. A similar procedure was also repeated using the Gene Expression Programming (GEP) technique relying on the same input variables of the HS model. The results showed the importance of adopting k-fold based independent testing approach in order to avoid problems related to the influence of selected test period on the performance of the GEP models.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers and Electronics in Agriculture - Volume 117, September 2015, Pages 70-80
نویسندگان
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