Comparison of empirical methods to predict evapotranspiration | |
| Author | Wellappili, Udara Chethana Gunasekara |
| Call Number | AIT Caps. Proj. no.CIE-18-52 |
| Subject(s) | Evapotranspiration Evaporation (Meteorology) |
| Note | A capstone project report submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Engineering Civil and Infrastructure Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Caps. Proj. ; no. CIE-18-52 |
| Abstract | These six evapotranspiration methods are compared, According to their daily performances under the specified climatic condition in the Songkhram river basin. The Food and Agriculture Organization (FA056-PM) is standardized PM method. And this method used to compare with theThornthwaite, Hamon methods and Hargreaves, This Penman Monteith technique has also been used as an index for two methods: the method that have been based on net radiation (Rn) and solar radiation (Rs) , which are the basic form ofFA056-Pemnman Monteith Performance analysis for the computed Evapotranspiration using Climatological data for fifteen (Jan 1990 Dee 2004) years. was made. The SEE value was calculated based on daily values. Pearsons correlation of 0.61,0.32,0.26,0.20 and 0.22 respectively from the Udonthani station by the Hamon, Hargreaves, Thornthwaite, and the Rn -based and Rs-based radiation methods. But the Nakhon phantom station shows 0.69,0.18,0.22,0.21 and 0.12. Re- spectively in those five techniques. Evapotranspiration evaluated by the Hargreaves method showed that the Temperature as input parameter was significant as the Penman Monteith technique. Also, the Hargreaves method has been found to have highly correlated with the FA056-PM technique in both udon thani and Nakhon phanom stations. Thus, when count on the reliability and availability of the input parameter values, the use of all these tech- niques are proposed as practical methods for estimating ETo if the standard FA056-Penman Monteith method is not applicable due to the difficulty of its input parameters. |
| Year | 2018 |
| Corresponding Series Added Entry | Asian Institute of Technology. Caps. Proj. ; no. CIE-18-52 |
| Type | Capstone Project |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Civil and Infrastructure Engineering (CIE) |
| Chairperson(s) | Duc Hoang Nguyen; |
| Examination Committee(s) | Shrestha, Sangam; |
| Degree | Capstone Project (B.Sc.)-Asian Institute of Technology, 2018 |