Climate change is driving significant seasonal shifts in ocean surface temperatures, with warming during summer months and extreme chilling during winter. These temperature extremes pose serious risks to marine ecosystems, affecting sea life and threatening the stability of aquaculture operations. Finding effective, scalable methods to regulate sea surface temperatures has become a growing concern for coastal environmental management and marine industries.
C-CORE, in collaboration with BubbleTubing®, tested air bubble-induced upwelling to mix water and stabilize surface temperatures. The concept leverages rising air bubbles to create vertical water movement, bringing cooler water from lower depths to the surface during warm periods – or promoting mixing during colder months.
To support this work, we conducted a combined program of physical field trials and numerical modeling. Computational Fluid Dynamics (CFD) simulations were used to plan the trials, optimize system performance, and validate the experimental results.
Field testing was carried out at The Launch, the Marine Institute’s coastal research facility in Holyrood, Newfoundland. Measurement parameters included:
These trials demonstrated the potential of bubble-induced upwelling to enhance water mixing and reduce surface thermal stress in environmentally sensitive or aquaculture-dense regions.
C-CORE is moving forward by collaborating with bubbler technology vendors, including CanadianPond.ca Products Ltd., to pilot integrated in-cage systems and evaluate their long-term ecological impact.Our work offers a promising step toward adaptive marine technologies that can help buffer the impacts of climate change on vulnerable coastal ecosystems.