Comparison of Several Reference Evapotranspiration Methods for Itoshima Peninsula Area, Fukuoka, Japan

スポンサーリンク

概要

• 論文の詳細を見る

• Six reference evapotranspiration (ETo) methods are compared, based on their daily performances under the given climatic condition in the western region of Fukuoka City. The Penman-Monteith equation standardized by the Food and Agriculture Organization (FAO56-PM) is used to compare with the Thornthwaite, Hargreaves, and Hamon methods. The FAO56-PM method has also been used as an index for two equations: the solar radiation (Rs) based and net radiation (Rn) based equations, which are the simplified versions of FAO56-PM. Performance analysis for the calculated values using meteorological data for 7 years (Jan 1996 – Dec 2002) was made. The standard error of estimates (SEE) was calculated on monthly basis. The estimated values by the Thornthwaite, Hargreaves, Hamon, and the Rs-based and Rn-based radiation methods were all correlated with FAO56-PM having correlation (r2) values calculated by Pearson’s correlation of 0.80, 0.69, 0.48, 0.71 and 0.45 and their standard error estimates were 0.25 , 0.25, 0.25, 0.28 and 0.24 mm mon-1, respectively. Proximity in ETo estimates by the Hargreaves and the Rs-based methods showed that the solar radiation as input variable was important as the FAO56-PM method. Also, the Thornthwaite method, which uses only temperature as input variable, has been found to have highly correlated with the FAO56-PM method. Thus, when considering the availability and reliability of the input data, the use of all these methods are suggested as practical methods for estimating ETo if the standard FAO56-PM equation is not applicable due to the complexity of its input parameters.

• 九州大学の論文
• 2006-03-23

著者

• Jinno Kenji

  Institute Of Environmental Systems Kyushu University

• Jinno Kenji

  Institute Of Environmental Systems

• ALKAEED Othoman

  Department of Urban and Environmental Engineering, Graduate School of Engineering, Kyushu University

• FLORES Clariza

  Department of Urban and Environmental Engineering, Faculty of Engineering, Kyushu University

• Flores Clariza

  Department Of Urban And Environmental Engineering Faculty Of Engineering Kyushu University

• Alkaeed Othoman

  Department Of Urban And Environmental Engineering Graduate School Of Engineering Kyushu University

• JINNO Kenji

  Institute of Environmental Systems, Kyushu University

関連論文

• Application of Artificial Neural Networks for Optimal Pressure Regulation in Supervisory Water Distribution Networks
• Analysis of Motor Valve Operations in Fukuoka City Water Supply Network Using Self-Organizing Map
• STATISTICAL CHARACTERISTICS OF SOUTHERN OSCILLATION INDEX AND ITS BAROMETRIC PRESSURE DATA
• Multi-component Solute Transport Model with Cation Exchange under Redox Environment and its Application for Designing the Slow Infiltration Setup
• Drought Management of Water Supply Systems: A Decision Support System Approach
• Study on Safe Removal of Toxic Marine Sediment
• Comparison of Several Reference Evapotranspiration Methods for Itoshima Peninsula Area, Fukuoka, Japan
• Rainfall Estimation in the Chikugo River Basin by Atmospheric Downscaling Using Artificial Neural Networks
• Practice of Sound Hydrologic Cycle and Ecological Environment in Itoshima : -Aqua Bench project-
• Dynamical Behavior of Multivariate Time Series for SOI, Precipitation/Temperature in Fukuoka and Its Prediction by Artificial Neural Networks

スポンサーリンク