Throughout their lifetime, tires are worn down due to road friction, releasing tire wear particles to the environment. Tires are comprised of a mixture of natural rubber, synthetic polymers, antioxidants, antiozonants, fillers, carbon black, and steel. A key environmental concern is the oxidation product 6PPD‑quinone. 6PPD-quinone has been linked to acute mortality in coho salmon and other aquatic species. Tire wear particles themselves are a significant component of non-combustion roadway emissions, with fine fractions impacting air quality. Long range atmospheric transport of tire wear particles can also result in deposition on snow, reducing snow albedo, and potentially altering the snowpack energy balance. Despite these numerous environmental impacts, research has yet to parameterize fundamental characteristics or driving forces behind tire wear particle environmental fate. This session invites abstracts on tire wear particles and their associated chemicals, including characterization, generation, transport, transformation, fate, and effects through laboratory experiments, field monitoring, and modeling.

• A - Atmospheric Sciences
• B - Biogeosciences
• C - Cryosphere