Future hydrology and hydrological extremes under climate change in Asian river basins

Abstract The diverse impacts of anthropogenic climate change in the spatiotemporal distribution of global freshwater are generally addressed through global scale studies, which suffer from uncertainties arising from coarse spatial resolution. Multi-catchment, regional studies provide fine-grained de...

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Main Authors: Sangam Shrestha, Deg-Hyo Bae, Panha Hok, Suwas Ghimire, Yadu Pokhrel
Format: Article
Language:English
Published: Nature Portfolio 2021-08-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-021-96656-2
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author Sangam Shrestha
Deg-Hyo Bae
Panha Hok
Suwas Ghimire
Yadu Pokhrel
author_facet Sangam Shrestha
Deg-Hyo Bae
Panha Hok
Suwas Ghimire
Yadu Pokhrel
author_sort Sangam Shrestha
collection DOAJ
description Abstract The diverse impacts of anthropogenic climate change in the spatiotemporal distribution of global freshwater are generally addressed through global scale studies, which suffer from uncertainties arising from coarse spatial resolution. Multi-catchment, regional studies provide fine-grained details of these impacts but remain less explored. Here, we present a comprehensive analysis of climate change impacts on the hydrology of 19 river basins from different geographical and climatic conditions in South and Southeast Asia. We find that these two regions will get warmer (1.5 to 7.8 °C) and wetter (− 3.4 to 46.2%) with the expected increment in river flow (− 18.5 to 109%) at the end of the twenty-first century under climate change. An increase in seasonal hydro-climatic extremes in South Asia and the rising intensity of hydro-climatic extremes during only one season in Southeast Asia illustrates high spatiotemporal variability in the impact of climate change and augments the importance of similar studies on a larger scale for broader understanding.
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spelling doaj.art-b4b0680108974fd988c1f2596c3a22792022-12-21T20:34:23ZengNature PortfolioScientific Reports2045-23222021-08-0111111210.1038/s41598-021-96656-2Future hydrology and hydrological extremes under climate change in Asian river basinsSangam Shrestha0Deg-Hyo Bae1Panha Hok2Suwas Ghimire3Yadu Pokhrel4Water Engineering and Management, School of Engineering and Technology, Asian Institute of TechnologyDepartment of Civil and Environmental Engineering, Sejong UniversityWater Engineering and Management, School of Engineering and Technology, Asian Institute of TechnologyWater Engineering and Management, School of Engineering and Technology, Asian Institute of TechnologyDepartment of Civil and Environmental Engineering, Michigan State UniversityAbstract The diverse impacts of anthropogenic climate change in the spatiotemporal distribution of global freshwater are generally addressed through global scale studies, which suffer from uncertainties arising from coarse spatial resolution. Multi-catchment, regional studies provide fine-grained details of these impacts but remain less explored. Here, we present a comprehensive analysis of climate change impacts on the hydrology of 19 river basins from different geographical and climatic conditions in South and Southeast Asia. We find that these two regions will get warmer (1.5 to 7.8 °C) and wetter (− 3.4 to 46.2%) with the expected increment in river flow (− 18.5 to 109%) at the end of the twenty-first century under climate change. An increase in seasonal hydro-climatic extremes in South Asia and the rising intensity of hydro-climatic extremes during only one season in Southeast Asia illustrates high spatiotemporal variability in the impact of climate change and augments the importance of similar studies on a larger scale for broader understanding.https://doi.org/10.1038/s41598-021-96656-2
spellingShingle Sangam Shrestha
Deg-Hyo Bae
Panha Hok
Suwas Ghimire
Yadu Pokhrel
Future hydrology and hydrological extremes under climate change in Asian river basins
Scientific Reports
title Future hydrology and hydrological extremes under climate change in Asian river basins
title_full Future hydrology and hydrological extremes under climate change in Asian river basins
title_fullStr Future hydrology and hydrological extremes under climate change in Asian river basins
title_full_unstemmed Future hydrology and hydrological extremes under climate change in Asian river basins
title_short Future hydrology and hydrological extremes under climate change in Asian river basins
title_sort future hydrology and hydrological extremes under climate change in asian river basins
url https://doi.org/10.1038/s41598-021-96656-2
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