Slowdown in Arctic sea ice movement, impacting marine transport and climate
by Clarence Oxford
Los Angeles CA (SPX) Mar 11, 2024

A groundbreaking study by York University researchers reveals a significant shift in Arctic sea ice dynamics, forecasting a slowdown in sea ice movement in the coming decades. This change could have profound effects on marine transportation safety and the broader implications for ecosystems, Indigenous communities, and global climate patterns.

Traditionally, Arctic sea ice has been observed to move more rapidly, posing increased risks for marine transportation. However, the latest climate models suggest a reversal of this trend during summer months, sparking debate over the models' accuracy.

The study, conducted by Neil Tandon, Associate Professor at the Lassonde School of Engineering, and Postdoctoral Visitor Jamie Ward, and published in The Cryosphere, explores the mechanisms behind the anticipated slowdown. "The shift in sea ice dynamics is a critical area of study, as it affects marine navigation, ecosystem health, and Indigenous livelihoods," Tandon explains. "Our research indicates a future decrease in sea ice speed, although the exact timing remains uncertain."

The acceleration of sea ice has been likened to a spring's expansion and contraction, with thinner ice moving more freely. However, as ice becomes extremely thin, it transitions to a free drift state, where external forces like wind and ocean currents predominate, leading to the projected slowdown.

Model predictions vary, with some indicating the slowdown could begin within a decade, while others suggest a longer timeline. Despite this variability, the study highlights the potential benefits of a slowdown in ice movement for marine transportation. Yet, Tandon cautions, "The overarching issue of diminishing sea ice cover remains a pressing global concern, affecting not just navigation but also the Arctic's ecological and cultural landscapes."

The Lassonde School of Engineering at York University, positioned in Toronto's diverse community, plays a pivotal role in advancing engineering, scientific, and entrepreneurial education. Similarly, York University stands as a beacon of modern, inclusive higher education, with a commitment to societal improvement and student success across its global campuses.

For additional insights, contact Emina Gamulin, York University Media Relations, at [email protected] or 437-217-6362.

Research Report:Why is summertime Arctic sea ice drift speed projected to decrease?

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