气候变化领域集成服务门户(CCPortal): Modeling the Impact of Climate Change on Streamflow in the Meghna River Basin: An Analysis Using SWAT and CMIP6 Scenarios

CCPortal

DOI	10.3390/w16081117
	Modeling the Impact of Climate Change on Streamflow in the Meghna River Basin: An Analysis Using SWAT and CMIP6 Scenarios
	Mamoon, Wasif Bin; Jahan, Nasreen; Abdullah, Faruque; Rahman, Ataur
发表日期	2024
EISSN	2073-4441
起始页码	16
结束页码	8
卷号	16 期号:8
英文摘要	This study assesses future climate change impacts on the hydrologic response of the Upper Meghna River Basin (UMRB), a major river system in Bangladesh. Separate SWAT (Soil and Water Assessment Tool) hydrologic models were developed for the three major sub-basins of the UMRB, i.e., Barak, Meghalaya, and Tripura, considering their unique geographical, hydrological, and land-use characteristics. To evaluate the efficiency of multi-site modeling in providing better model performance, the SWAT models were calibrated at both single and multiple locations. Those models were then simulated to estimate future flows using climate projection data from thirteen CMIP6 General Circulation Models (GCMs) under moderate and extreme emission scenarios, SSP2-4.5, and SSP5-8.5. The results revealed that the annual maximum flow will keep increasing gradually with time. The outlets of the Meghalaya sub-basin will experience a more significant rise in future flow in the upcoming decades compared to the Barak and Tripura sub-basins. Results showed that dry season flows with increases of up to 31-50% would be less affected compared to the wet periods, which could experience increases of up to 47-66%) across the sub-basins by the end of the 21st century under extreme emission projections. Besides an increasing trend in the mean flow, future flows at several outlets also exhibited an escalation in the intensity and frequency of extreme flood events.
英文关键词	future flow projection; climate change; CMIP6; SWAT; Meghna River basin; Bangladesh
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:001210203100001
来源期刊	WATER
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/309757
作者单位	Bangladesh University of Engineering & Technology (BUET); Western Sydney University
推荐引用方式 GB/T 7714	Mamoon, Wasif Bin,Jahan, Nasreen,Abdullah, Faruque,et al. Modeling the Impact of Climate Change on Streamflow in the Meghna River Basin: An Analysis Using SWAT and CMIP6 Scenarios[J],2024,16(8).
APA	Mamoon, Wasif Bin,Jahan, Nasreen,Abdullah, Faruque,&Rahman, Ataur.(2024).Modeling the Impact of Climate Change on Streamflow in the Meghna River Basin: An Analysis Using SWAT and CMIP6 Scenarios.WATER,16(8).
MLA	Mamoon, Wasif Bin,et al."Modeling the Impact of Climate Change on Streamflow in the Meghna River Basin: An Analysis Using SWAT and CMIP6 Scenarios".WATER 16.8(2024).