The future influences of climate change and river regulation on high-latitude circulation as determined by ocean modelling ...
The Hudson Bay Complex (HBC), encompassing Foxe Basin (FB), Hudson Strait (HS), Ungava Bay (UB), Hudson Bay (HB), and James Bay (JB), experiences notable shifts in freshwater sources. Despite being smaller than the Arctic Ocean, the HBC annually receives around 900 km3 of river discharge, constituti...
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University of Alberta Library
2023
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| Online Access: | https://dx.doi.org/10.7939/r3-px2z-r250 https://era.library.ualberta.ca/items/75daa576-db5f-4d9d-8f66-f3b298dc8c4f |
| Summary: | The Hudson Bay Complex (HBC), encompassing Foxe Basin (FB), Hudson Strait (HS), Ungava Bay (UB), Hudson Bay (HB), and James Bay (JB), experiences notable shifts in freshwater sources. Despite being smaller than the Arctic Ocean, the HBC annually receives around 900 km3 of river discharge, constituting about 25% of the Arctic Ocean's inflow. The HBC receives freshwater primarily from river runoff and ice freeze-thaw processes, both impacted by human activities (e.g., diversions, dams, and reservoirs) and climate change. Using the NEMO ocean-sea ice model with the Arctic and Northern Hemisphere Atlantic (ANHA) configuration, we investigated how river regulation and climate change affect HBC's freshwater dynamics. We applied an ensemble of five climate simulations, which were from the Coupled Model Inter-comparison Project 5 (CMIP5) model experiments. They were initialized between 1980 and 2005, forced with naturalized and regulated river runoff, and driven by different representative ... |
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