| Author | Peiris, Ardhige Thedini Asali |
| Call Number | AIT Caps. Proj. no.CIE-14-38 |
| Subject(s) | Climatic changes--Ping River Basin (Thailand)
|
| Note | A capstone project report submitted in partial fulfillment of the requirements for the
degree of Bachelor of Science in Engineering in
Civil and Infrastructure Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Caps. Proj. ; no. CIE-14-38 |
| Abstract | Climate change has become a major concern in every field. This study performs the trend analysis of hydrological and meteorological variables in the Ping River basin, Thailand. For the analysis we used temperature and rainfall variables as meteorological variables and flow discharge as the hydrological variable. We used daily data of 6 temperature stations, 6 rainfall stations and 3 discharge stations for the study. The trend analysis was done by using both statistical methods and exploratory methods. For the statistical methods we used only non – parametric equations. Mann-Kendall test followed by the Sen’s slop method was used to check the existence of the trend in the time series. As the first sub objective of the study, we were able to propose a general frame work to check the trend in any hydro – metro time series. Then we applied the proposed frame work to the Ping river basin, Thailand. One of the main findings of the study is that, before we apply the statistical methods to the time series it is important to apply transformations to the time series in order to account the non- stationarity. From the analysis we found that the time series without transformation shows less independence compared to the time series with transformations. In this study to see the climate change in the Ping river basin we calculated four rainfall related and four temperature related climate indices. Then we check there variations for recent 5 years, recent 10 years and recent 25 years time scale. For temperature related indices; recent 5 years (2002-2006), recent 10 years (1997-2006), recent 25 years (1982- 2006) and for rainfall related indices recent 5 years (2008-2012), recent 10 years (2003- 2012), recent 25 years (1988-2012). At the end the study conclude that the in the temporal scale of recent 25 years (1988-2012) hilly areas of the study area receives more rainfall relative to the terrain area. So the terrain area shows more warmer and dry climate. The second criterion that we check in this study was the effect of the sea on the temperature and the rainfall variables. According to the outcomes of this study we found that effect of the sea is relatively low for the rainfall, as the study area located in the inland. But we can expect more rainfall for the non- coastal areas. Same time the temperature of the coastal area is higher than the non-coastal area. For recent 25 years time scale Ping river basin show an increasing trend for both rainfall and temperature variables. The river flow discharge shows a seasonal trend variation according to the exploratory analysis. |
| Year | 2014 |
| Corresponding Series Added Entry | Asian Institute of Technology. Caps. Proj. ; no. CIE-14-38 |
| 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) | Shrestha, Sangam; |
| Examination Committee(s) | Sarawut Ninsawat; |
| Degree | Capstone Project (B.Sc.)-Asian Institute of Technology, 2014 |