alexa Assessment of Water Availability under Climate Change Scenarios in Thailand
ISSN: 2157-7617

Journal of Earth Science & Climatic Change
Open Access

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Research Article

Assessment of Water Availability under Climate Change Scenarios in Thailand

Sangam Shrestha*
Water Engineering and Management, School of Engineering and Technology, Asian Institute of Technology, PO Box 4, Klong Luang, Pathumthani 12120, Thailand
Corresponding Author : Sangam Shrestha
Water Engineering and Management
School of Engineering and Technology
Asian Institute of Technology, PO Box 4
Klong Luang, Pathumthani-12120, Thailand
Tel: +6625246055
E-mail: [email protected]
Received January 27, 2014; Accepted February 17, 2014; Published February 19, 2014
Citation: Shrestha S (2014) Assessment of Water Availability under Climate Change Scenarios in Thailand. J Earth Sci Clim Change 5:184. doi: 10.4172/2157-7617.1000184
Copyright: © 2014 Shrestha S. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
 

Abstract

This paper investigates the potential impact of climate change on future water availability in Thailand. For this study,
entire country was divided into nine Hydrological Response Units (HRUs) and the hydrological modeling was performed
by Hydrologic Engineering Center’s Hydrologic Modeling System (HEC-HMS) for each HRU using the future decadal
climate data obtained from the Regional Climate Model (RCM) named Providing Regional Climates for Impact Studies
(PRECIS) which was further bias corrected by using ratio method for two emission scenarios A2 and B2. The simulation
shows that the water availability in the future decades at the different HRUs varies for the dry and wet season. In case
of dry season, the coastal HRUs show a decline in water availability in the near future then tending to increase to the
similar amount as of current situation in the late part of century. However, in case of wet season all the HRUs shows
an increasing trend of water availability in future. Nonetheless, considering the whole country for dry season the water
availability is expected to be decreased in the early part of the century followed by an increasing trend by the end of the
century relative to current water availability for both scenarios. Similarly a univocal increasing trend of water availability
is expected for wet season indicating the possibility increased frequency and intensity of floods.

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