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Climate Change Scenarios and Its Impact on Water Resources of Langtang Khola Basin, Nepal : Volume 364, Issue 364 (16/09/2014)

By Raj Adhikari, T.

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Book Id: WPLBN0003974219
Format Type: PDF Article :
File Size: Pages 5
Reproduction Date: 2015

Title: Climate Change Scenarios and Its Impact on Water Resources of Langtang Khola Basin, Nepal : Volume 364, Issue 364 (16/09/2014)  
Author: Raj Adhikari, T.
Volume: Vol. 364, Issue 364
Language: English
Subject: Science, Proceedings, International
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Devkota, L. P., Shrestha, A. B., & Adhikari, T. R. (2014). Climate Change Scenarios and Its Impact on Water Resources of Langtang Khola Basin, Nepal : Volume 364, Issue 364 (16/09/2014). Retrieved from

Description: Central Department of Hydrology and Meteorology, Tribhuvan University, Kathmandu, Nepal. General Circulation Models (GCMs) successfully simulate future climate variability and climate change on a global scale; however, poor spatial resolution constrains their application for impact studies at a regional or a local level. The dynamically downscaled precipitation and temperature data were used for the future climate scenarios prediction for the period 2000–2050s, under the Special Report on Emissions Scenarios (SRES) A2 and A1B scenarios. In addition, rating equation was developed from measured discharge and gauge (stage) height data. The generated precipitation and temperature data from downscale and rating equation was used to run the HBV-Light 3.0 conceptual rainfall–runoff model for the calibration and validation of the model, gauge height was taken in the reference period (1988–2009). In the HBV-Light 3.0, a GAP optimization approach was used to calibrate the observed streamflow. From the precipitation scenarios with SRES A2 and A1B emissions at Kyanging, an increase of precipitation during summer and spring and a decrease during winter and autumn seasons was shown. The model projected annual precipitation for the 2050s of both the A2 and A1B scenarios are 716.4 mm and 703.6 mm, respectively. Such precipitation projections indicate the future increase of precipitation in all seasons except the summer. By the end of the 2050s simulation projects an increase maximum (minimum) discharge of 37.8 m3/s (13.9 m3/s) for A1B scenario and 36.2 m3/s (14.3 m3/s) for A2 scenario. A maximum projected discharge will increase for all seasons except for spring, whereas the minimum will decrease in summer.

Climate change scenarios and its impact on water resources of Langtang Khola Basin, Nepal


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