Evaluation of several soft computing methods in monthly evapotranspiration modelling

Meteorological applications

article

Siavash Gavili¹  Hadi Sanikhani²  Ozgur Kisi³  Mohammad Hasan Mahmoudi⁴ 

[1] Water Resources Engineering Department, College of Aburayhan, University of Tehran;Water Engineering Department, Faculty of Agriculture, University of Kurdistan;Ilia State University, Faculty of Natural Sciences and Engineering;Water Engineering Department, College of Aburayhan, University of Tehran

关键词: soft computing;    ANN;    ANFIS;    GEP;    empirical models;    evapotranspiration;    Iran;    prediction;   

DOI  :  10.1002/met.1676

学科分类：社会科学、人文和艺术（综合）

来源: Wiley

【 摘 要 】

Evapotranspiration assessment is one of the most substantial issues in hydrology. The methods used in modelling reference evapotranspiration (ET 0 ) consist of empirical equations or complex methods based on physical processes. In arid and semi-arid climates, determining the amount of evapotranspiration has a major role in the design of irrigation systems, irrigation network management, planning and management of water resources and water management issues in the agricultural sector. This paper presents a case study of five meteorological stations located in Kurdistan province in the west of Iran. The ability of three different soft computing methods, an artificial neural network (ANN), an adaptive neuro-fuzzy inference system (ANFIS) and gene expression programming (GEP), were compared for modelling ET 0 in this study. The FAO56 Penman−Monteith model was considered as a reference model and soft computing models were compared using the Priestley−Taylor, Hargreaves, Hargreaves−Samani, Makkink and Makkink−Hansen empirical methods, with respect to the determination co-efficient, the root mean square error, the mean absolute error and the Nash–Sutcliffe model efficiency co-efficient. Soft computing models were superior to the empirical methods in modelling ET 0 . Among the soft computing methods, the ANN was found to be better than the ANFIS and GEP.

【 授权许可】

CC BY|CC BY-NC|CC BY-NC-ND