Simulating glacier mass balance in the cross-border Poiqu/Bhotekoshi Basin, China and Nepal

To assess the change of glacier mass balance (GMB) in the Poiqu/Bhotekoshi basin in the context of global warming, this study applied a conceptual Hydrologiska Bryans Vattenbalansavdelning (HBV) hydrological model to quantify the GMB in the area. The HBV model was trained and validated based on in-s...

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Autores principales:	Bo Kong, Huan Yu, Wei Deng, Qing Wang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	conceptual hydrological model cross-border rivers glacier mass balance poiqu/bhotekoshi basin runoff depth Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/a4dc644c5e4149f1a52226580f16fc5e
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spelling	oai:doaj.org-article:a4dc644c5e4149f1a52226580f16fc5e2021-11-05T19:01:29ZSimulating glacier mass balance in the cross-border Poiqu/Bhotekoshi Basin, China and Nepal2040-22442408-935410.2166/wcc.2020.024https://doaj.org/article/a4dc644c5e4149f1a52226580f16fc5e2021-08-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/5/1515https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354To assess the change of glacier mass balance (GMB) in the Poiqu/Bhotekoshi basin in the context of global warming, this study applied a conceptual Hydrologiska Bryans Vattenbalansavdelning (HBV) hydrological model to quantify the GMB in the area. The HBV model was trained and validated based on in-situ hydro meteorological data from 10 weather stations in the basin. The dataset, which consists of the daily observations for both rainfall and air temperature, was partitioned into two decades, 1988–1998 and 1999–2008 for calibration and validation, respectively. The calibrated model was adopted to restore the daily runoff depth and then estimate the annual changes of GMB in Poiqu/Bhotekoshi basin over the period of 1988–2008. Results show that the Nash–Sutcliffe efficiency coefficient (Reff) of the daily runoff depth simulation after the runoff calibration process was above 0.802. Therefore, the simulated values of the HBV model are reliable and can be used to estimate the GMB of Himalayan cross-border glacial mountain basins with huge elevation difference, and provide scientific data support for water resources management. Furthermore, the result demonstrated a slow year-by-year rise of snow water equivalent because of global warming, and it highly correlates with the soil moisture, the spring temperature and the summer precipitation. HIGHLIGHTS The HBV model had a better simulation effect on the annual daily runoff depth.; The HBV model parameter combination was obtained through calibration.; The precipitation increase was found to have a contribution rate of 38% to runoff.; Glacial melting caused by temperature had a contribution rate of 62% to runoff increase.;Bo KongHuan YuWei DengQing WangIWA Publishingarticleconceptual hydrological modelcross-border riversglacier mass balancepoiqu/bhotekoshi basinrunoff depthEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 5, Pp 1515-1531 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	conceptual hydrological model cross-border rivers glacier mass balance poiqu/bhotekoshi basin runoff depth Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	conceptual hydrological model cross-border rivers glacier mass balance poiqu/bhotekoshi basin runoff depth Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Bo Kong Huan Yu Wei Deng Qing Wang Simulating glacier mass balance in the cross-border Poiqu/Bhotekoshi Basin, China and Nepal
description	To assess the change of glacier mass balance (GMB) in the Poiqu/Bhotekoshi basin in the context of global warming, this study applied a conceptual Hydrologiska Bryans Vattenbalansavdelning (HBV) hydrological model to quantify the GMB in the area. The HBV model was trained and validated based on in-situ hydro meteorological data from 10 weather stations in the basin. The dataset, which consists of the daily observations for both rainfall and air temperature, was partitioned into two decades, 1988–1998 and 1999–2008 for calibration and validation, respectively. The calibrated model was adopted to restore the daily runoff depth and then estimate the annual changes of GMB in Poiqu/Bhotekoshi basin over the period of 1988–2008. Results show that the Nash–Sutcliffe efficiency coefficient (Reff) of the daily runoff depth simulation after the runoff calibration process was above 0.802. Therefore, the simulated values of the HBV model are reliable and can be used to estimate the GMB of Himalayan cross-border glacial mountain basins with huge elevation difference, and provide scientific data support for water resources management. Furthermore, the result demonstrated a slow year-by-year rise of snow water equivalent because of global warming, and it highly correlates with the soil moisture, the spring temperature and the summer precipitation. HIGHLIGHTS The HBV model had a better simulation effect on the annual daily runoff depth.; The HBV model parameter combination was obtained through calibration.; The precipitation increase was found to have a contribution rate of 38% to runoff.; Glacial melting caused by temperature had a contribution rate of 62% to runoff increase.;
format	article
author	Bo Kong Huan Yu Wei Deng Qing Wang
author_facet	Bo Kong Huan Yu Wei Deng Qing Wang
author_sort	Bo Kong
title	Simulating glacier mass balance in the cross-border Poiqu/Bhotekoshi Basin, China and Nepal
title_short	Simulating glacier mass balance in the cross-border Poiqu/Bhotekoshi Basin, China and Nepal
title_full	Simulating glacier mass balance in the cross-border Poiqu/Bhotekoshi Basin, China and Nepal
title_fullStr	Simulating glacier mass balance in the cross-border Poiqu/Bhotekoshi Basin, China and Nepal
title_full_unstemmed	Simulating glacier mass balance in the cross-border Poiqu/Bhotekoshi Basin, China and Nepal
title_sort	simulating glacier mass balance in the cross-border poiqu/bhotekoshi basin, china and nepal
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/a4dc644c5e4149f1a52226580f16fc5e
work_keys_str_mv	AT bokong simulatingglaciermassbalanceinthecrossborderpoiqubhotekoshibasinchinaandnepal AT huanyu simulatingglaciermassbalanceinthecrossborderpoiqubhotekoshibasinchinaandnepal AT weideng simulatingglaciermassbalanceinthecrossborderpoiqubhotekoshibasinchinaandnepal AT qingwang simulatingglaciermassbalanceinthecrossborderpoiqubhotekoshibasinchinaandnepal
_version_	1718444055573037056

Simulating glacier mass balance in the cross-border Poiqu/Bhotekoshi Basin, China and Nepal

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