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A trend analysis of climatic variables in the Kelani River Basin, Sri Lanka | |
Author | Weerasekara, Pavithra Madushani |
Call Number | AIT Caps. Proj. no.CIE-17-54 |
Subject(s) | Climatic changes--Sri Lanka--Kelani River |
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, School of Engineering and Technology |
Publisher | Asian Institute of Technology |
Series Statement | Caps. Proj. ; no. CIE-17-54 |
Abstract | This study was performed with the aim of identifying the trends of climatic variables of Kelani River Basin, Sri Lanka. Ten indices, five each related to temperature and precipitation, were selected to analyze the trends. For analysis of spatial distribution in trends, data from six stations were analyzed. Trends were calculated using RClimDex 1.0, which uses Sens slope and Mann- Kendal test for identifying amount, direction and statistical significance of the trends. Time-series and spatial plots were made for exploratory analysis of the trends. Results showed no significant trend in the selected indices, except consecutive dry days (CDD) and diurnal temperature range (DTR). Numbers of consecutive dry days were higher than the number of wet days but consecutive dry days indicated decreasing trends, in the stations Hanwella and Castlereagh suggesting less dryer periods occurred towards the latter part of the period, and dryer periods are directly proportional to temperature. The DTR showed decreasing towards recent years in all the three stations in western part of the basin. It indicates increasing warming during night hours in the western part of the basin. |
Year | 2017 |
Corresponding Series Added Entry | Asian Institute of Technology. Caps. Proj. ; no. CIE-17-54 |
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) | Pandey, Vishnu ;Shrestha, Sangam; |
Examination Committee(s) | Duc, Hoang Nguyen; |
Degree | Capstone Project (B.Sc.)-Asian Institute of Technology, 2017 |