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September 10, 2025Open Access

Challenges in Simulating Ozone Depletion Events in the Arctic Boundary Layer: A Case Study Using ECHAM/MESSy for Spring 2019/20

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Authors

SFStefanie FalkLRLuca ReißigBZBianca Zilker

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Overview

Model shows discrepancies in ozone depletion events and bromine explosions in Arctic, suggesting alternative processes.

Key Points

  • The model underestimated boundary layer height during shallow conditions, indicating a warm surface bias.
  • Modeling improvements with realistic sea ice enhanced agreements but did not replicate strong ozone depletion events.
  • Overestimated BrO mixing ratios and underestimated vertical column densities suggest unresolved modeling discrepancies.
  • A decline in strong ozone depletion frequency despite increasing bromine emissions points to unaccounted climate mechanisms.

Cite This Study

Falk et al. (2025) studied this question.

synapsesocial.com/papers/68c1c32e54b1d3bfb60f14d0https://doi.org/10.5194/egusphere-2025-3181
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