Hydrologic characterization of the Upper Ayeyarwaddy River Basin and the impact of climate change

Author:

Gurung Pabitra1ORCID,Dhungana Shashwat1,Kyaw Kyaw Aung1,Bharati Luna12

Affiliation:

1. a International Water Management Institute (IWMI), Kathmandu, Nepal

2. b International Centre for Water Resources and Global Change (ICWRGC), Federal Institute of Hydrology, Koblenz, Germany

Abstract

Abstract This study characterizes the hydrological regime of the Upper Ayeyarwaddy River Basin (UARB) of Myanmar under current and future climate change scenarios by using the Soil and Water Assessment Tool (SWAT). The model simulation results show that the annual precipitation, actual evapotranspiration and water yields are 1,578, 524 and 1,010 mm, respectively. These will increase by 13–28%, 11–24% and 42–198% under two representative concentration pathways (RCPs), RCP 4.5 and RCP 8.5, for the future. There is seasonal variability across the cool, hot and rainy seasons in the agro-ecological regions – mountains, hills and inland plains. As in other Asian regions, the model shows that the wet (rainy) season is becoming wetter and the dry (cool) season is becoming drier in the UARB too.

Funder

USAID

International Water Management Institute

Publisher

IWA Publishing

Subject

Management, Monitoring, Policy and Law,Atmospheric Science,Water Science and Technology,Global and Planetary Change

Reference30 articles.

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2. Bharati L. , BhattaraiU., KhadkaA., GurungP., NeumannL. E., PentonD. J., DhaubanjarS. & NepalS.2019From the Mountains to the Plains: Impact of Climate Change on Water Resources in the Koshi River Basin. IWMI Working Paper 187. International Water Management Institute, Colombo, Sri Lanka, p. 41.

3. The Earth System Grid Federation: an open infrastructure for access to distributed geospatial data;Future Generation Computer Systems,2014

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