Articles | Volume 25, issue 9
https://doi.org/10.5194/hess-25-5193-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-25-5193-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
24 Sep 2021
Research article |
| 24 Sep 2021
| 24 Sep 2021
A global algorithm for identifying changing streamflow regimes: application to Canadian natural streams (1966–2010)
Masoud Zaerpour
CORRESPONDING AUTHOR
Department of Building, Civil and Environmental Engineering, Concordia
University, Montreal, Quebec, Canada
Shadi Hatami
Department of Building, Civil and Environmental Engineering, Concordia
University, Montreal, Quebec, Canada
Javad Sadri
Oppimi Group, Montréal, Quebec, Canada
Ali Nazemi
CORRESPONDING AUTHOR
Department of Building, Civil and Environmental Engineering, Concordia
University, Montreal, Quebec, Canada
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Anthony A. P. Baron, Helen M. Baulch, Ali Nazemi, and Colin J. Whitfield
Hydrol. Earth Syst. Sci., 29, 1449–1468, https://doi.org/10.5194/hess-29-1449-2025, https://doi.org/10.5194/hess-29-1449-2025, 2025
Short summary
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We aimed to understand how climate variability and flow management affected the water quality of a key drinking water source. Our focus was on dissolved organic carbon (DOC), and our work demonstrated that DOC can change rapidly, reaching high concentrations in wet periods, when flow sources are dominated by the local catchment. Results indicate that the impacts of high local flow and low inflows from managed sources are compounding water quality challenges, creating issues for water treatment.
Robert Sarpong and Ali Nazemi
EGUsphere, https://doi.org/10.5194/egusphere-2024-4150, https://doi.org/10.5194/egusphere-2024-4150, 2025
Short summary
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We benchmark the ERA5-Land's snow cover, snow depth, and snow water equivalent across 21 ecological regions in Canada and Alaska using MODIS and CMC snow analysis products at monthly, seasonal and annual scales. Particular attention is given to inspect whether ERA5-Land snow fields are able to reconstruct the spatial structure of snow variables inferred by the reference products and whether there is any spatial structure within the ERA5-Lands discrepancies.
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Short summary
Streamflow regimes are changing globally particularly in cold regions. We develop a novel algorithm for detecting shifting streamflow regimes using changes in first and second moments of ensemble streamflow features. This algorithm is generic and can be used globally. To showcase its application, we assess alterations in Canadian natural streams from 1966 to 2010 to provide the first temporally consistent, pan-Canadian assessment of change in natural streamflow regimes, coast to coast to coast.
Streamflow regimes are changing globally particularly in cold regions. We develop a novel...
