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  Attributing historical streamflow changes in the Jhelum River basin to climate change

Javed, M., Didovets, I., Böhner, J., Hasson, S. u. (2023): Attributing historical streamflow changes in the Jhelum River basin to climate change. - Climatic Change, 176, 149.
https://doi.org/10.1007/s10584-023-03628-8

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 Creators:
Javed, Mustafa1, Author              
Didovets, Iulii1, Author              
Böhner, Jürgen2, Author
Hasson, Shabeh ul2, Author
Affiliations:
1Potsdam Institute for Climate Impact Research, ou_persistent13              
2External Organizations, ou_persistent22              

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Free keywords: Impact attribution, Streamflow, Jhelum Basin, Climatic change, SWIM, ISIMIP
 Abstract: Amid a heated debate on what are possible and what are plausible climate futures, ascertaining evident changes that are attributable to historical climate change can provide a clear understanding of how warmer climates will shape our future habitability. Hence, we detect changes in the streamflow simulated using three different datasets for the historical period (1901–2019) and analyze whether these changes can be attributed to observed climate change. For this, we first calibrate and validate the Soil and Water Integrated Model and then force it with factual (observed) and counterfactual (baseline) climates presented in the Inter-Sectoral Impact Model Intercomparison Project Phase 3a protocol. We assessed the differences in simulated streamflow driven by the factual and counterfactual climates by comparing their trend changes ascertained using the Modified Mann–Kendall test on monthly, seasonal, and annual timescales. In contrast to no trend for counterfactual climate, our results suggest that mean annual streamflow under factual climate features statistically significant decreasing trends, which are − 5.6, − 3.9, and − 1.9 m3s−1 for the 20CRv3-w5e5, 20CRv3, and GSWP3-w5e5 datasets, respectively. Such trends, which are more pronounced after the 1960s, for summer, and for high flows can be attributed to the weakening of the monsoonal precipitation regime in the factual climate. Further, discharge volumes in the recent factual climate dropped compared to the early twentieth-century climate, especially prominently during summer and mainly for high flows whereas earlier shifts found in the center of volume timings are due to early shifts in the nival regime. These findings clearly suggest a critical role of monsoonal precipitation in disrupting the hydrological regime of the Jhelum River basin in the future.

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Language(s): eng - English
 Dates: 2023-03-062023-10-112023-10-272023-10-27
 Publication Status: Finally published
 Pages: 20
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/s10584-023-03628-8
Organisational keyword: RD2 - Climate Resilience
PIKDOMAIN: RD2 - Climate Resilience
Working Group: Hydroclimatic Risks
Model / method: SWIM
Regional keyword: Asia
Research topic keyword: Attribution
MDB-ID: No data to archive
OATYPE: Hybrid Open Access
 Degree: -

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Title: Climatic Change
Source Genre: Journal, SCI, Scopus, p3
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Pages: - Volume / Issue: 176 Sequence Number: 149 Start / End Page: - Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals80
Publisher: Springer