Evaluating watershed hydrological responses to climate changes at Hangar Watershed, Ethiopia
The aim of this study is to model the responses of Hangar Watershed hydrology to future climate changes under two representative concentration pathway (RCP) scenarios. Future changes in precipitation and temperature were produced using the output of dynamically downscaled data of a regional climate...
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2021
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oai:doaj.org-article:2d2417db69514286a0035729fa1962ed2021-11-05T19:07:17ZEvaluating watershed hydrological responses to climate changes at Hangar Watershed, Ethiopia2040-22442408-935410.2166/wcc.2021.229https://doaj.org/article/2d2417db69514286a0035729fa1962ed2021-09-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/6/2271https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354The aim of this study is to model the responses of Hangar Watershed hydrology to future climate changes under two representative concentration pathway (RCP) scenarios. Future changes in precipitation and temperature were produced using the output of dynamically downscaled data of a regional climate model (RCM) 0.44° resolution under RCP 4.5 and 8.5 scenarios for 2025–2055 and 2056–2086. The future projection of the RCM model of precipitation and temperatures showed an increasing trend relative to the base period (1987–2017). At 2025–2055 average annual precipitation increments of +15.7 and +19.8% were expected for RCP 4.5 and RCP 8.5, respectively. For 2056–2086 of RCP 4.5 and 8.5, a similar trend was also shown as average annual precipitation may increase by +20.1 and +23.4%, respectively. The changes of climate parameters were used as input into the SWAT hydrological model to simulate the future runoff at Hangar Watershed. The increment in precipitation projection resulted in a positive magnitude impact on average runoff flow. The average annual change in runoff at 2025–2055 of both RCP 4.5 and 8.5 may increase by +24.5 and +23.6%, respectively. In 2056–2086, a change in average annual runoff of +73.2 and +73.2% for RCP 4.5 and 8.5 may be expected, respectively. HIGHLIGHTS Climate change scenarios were reviewed and bias correction was carried out for simulated Regional Climate Model data.; Future precipitation and temperature were projected.; Impact of future climate changes on runoff was evaluated.;Abdata Wakjira GalataKiyya Tesfa TulluAbebe Chala GuderIWA Publishingarticleclimate change projectioncordex datahydrological processprecipitationtemperatureEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 6, Pp 2271-2287 (2021) |
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climate change projection cordex data hydrological process precipitation temperature Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 |
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climate change projection cordex data hydrological process precipitation temperature Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Abdata Wakjira Galata Kiyya Tesfa Tullu Abebe Chala Guder Evaluating watershed hydrological responses to climate changes at Hangar Watershed, Ethiopia |
description |
The aim of this study is to model the responses of Hangar Watershed hydrology to future climate changes under two representative concentration pathway (RCP) scenarios. Future changes in precipitation and temperature were produced using the output of dynamically downscaled data of a regional climate model (RCM) 0.44° resolution under RCP 4.5 and 8.5 scenarios for 2025–2055 and 2056–2086. The future projection of the RCM model of precipitation and temperatures showed an increasing trend relative to the base period (1987–2017). At 2025–2055 average annual precipitation increments of +15.7 and +19.8% were expected for RCP 4.5 and RCP 8.5, respectively. For 2056–2086 of RCP 4.5 and 8.5, a similar trend was also shown as average annual precipitation may increase by +20.1 and +23.4%, respectively. The changes of climate parameters were used as input into the SWAT hydrological model to simulate the future runoff at Hangar Watershed. The increment in precipitation projection resulted in a positive magnitude impact on average runoff flow. The average annual change in runoff at 2025–2055 of both RCP 4.5 and 8.5 may increase by +24.5 and +23.6%, respectively. In 2056–2086, a change in average annual runoff of +73.2 and +73.2% for RCP 4.5 and 8.5 may be expected, respectively. HIGHLIGHTS
Climate change scenarios were reviewed and bias correction was carried out for simulated Regional Climate Model data.;
Future precipitation and temperature were projected.;
Impact of future climate changes on runoff was evaluated.; |
format |
article |
author |
Abdata Wakjira Galata Kiyya Tesfa Tullu Abebe Chala Guder |
author_facet |
Abdata Wakjira Galata Kiyya Tesfa Tullu Abebe Chala Guder |
author_sort |
Abdata Wakjira Galata |
title |
Evaluating watershed hydrological responses to climate changes at Hangar Watershed, Ethiopia |
title_short |
Evaluating watershed hydrological responses to climate changes at Hangar Watershed, Ethiopia |
title_full |
Evaluating watershed hydrological responses to climate changes at Hangar Watershed, Ethiopia |
title_fullStr |
Evaluating watershed hydrological responses to climate changes at Hangar Watershed, Ethiopia |
title_full_unstemmed |
Evaluating watershed hydrological responses to climate changes at Hangar Watershed, Ethiopia |
title_sort |
evaluating watershed hydrological responses to climate changes at hangar watershed, ethiopia |
publisher |
IWA Publishing |
publishDate |
2021 |
url |
https://doaj.org/article/2d2417db69514286a0035729fa1962ed |
work_keys_str_mv |
AT abdatawakjiragalata evaluatingwatershedhydrologicalresponsestoclimatechangesathangarwatershedethiopia AT kiyyatesfatullu evaluatingwatershedhydrologicalresponsestoclimatechangesathangarwatershedethiopia AT abebechalaguder evaluatingwatershedhydrologicalresponsestoclimatechangesathangarwatershedethiopia |
_version_ |
1718444027458617344 |