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September 10, 2025Atmospheric chemistry and physicsOpen Access

Modelling Arctic lower-tropospheric ozone: processes controlling seasonal variations

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Authors

WGWanmin GongSBS. R. BeagleyKTK. Toyota

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Overview

Chemical transport models simulated tropospheric ozone variations in the Arctic, indicating bromine chemistry is crucial for understanding depletion events.

Key Points

  • The study illustrates that understanding ozone depletion processes is vital for accurate modelling of seasonal variations in Arctic ozone levels.
  • GEM-MACH's simulations captured most observed ozone depletion events at coastal sites, while DEHM showed fewer successful predictions.
  • Analysis was based on independent chemical transport models working at higher resolutions, improving evaluations of tropospheric ozone in the Arctic.
  • The findings underscore the significant impact of wildfire emissions on pan-Arctic ozone concentrations, particularly at higher altitudes during summer.

Cite This Study

Gong et al. (2025) studied this question.

synapsesocial.com/papers/68c1a8f654b1d3bfb60e19d7https://doi.org/10.5194/acp-25-8355-2025
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