The fingerprint of global ozone recovery is increasingly characterized by spatial and vertical inconsistencies. While recent WMO findings highlight recovery signals in Antarctic, the Arctic continues to exhibit extreme volatility. These hemispheric differences are further complicated by a persistent vertical discrepancy: while the upper stratosphere shows healing, the lower stratosphere at mid-latitudes continues to exhibit puzzling negative trends. These declines remain an area of uncertainty, as satellite measurements and climate models (e.g., WACCM6) struggle to reconcile the roles of dynamical transport, very short-lived substances, and changing climate. This session invites contributions using satellite observations, ground-based networks, and chemistry-climate models to address vertical resolution discrepancies, hemispheric comparisons, predictive proxies, and emerging threats. We specifically encourage studies that bridge the gap between long-term observations and modeling to refine our understanding of how coupled chemistry and dynamics will dictate when and where the ozone layer truly returns to 1980 levels.

• SY - Science and Society
• SH - SPA-Solar and Heliospheric Physics