Detection of ozone recovery in the Arctic from ground-based measurements

Jonas, Caroline; Vigouroux, Corinne; Langerock, Bavo; Björklund, Robin; Boynard, Anne; Carlund, Thomas; De Mazière, Martine; Effertz, Peter; Errera, Quentin; Frey, Matthias M.; Granville, José; Hannigan, James W.; Keppens, Arno; Jepsen, Nis; Kivi, Rigel; Lyall, Norrie; Palm, Mathias; Prignon, Maxime; Sofieva, Viktoria F.; Strong, Kimberly; Svendby, Tove; Tarasick, David; Thölix, Laura; Van Malderen, Roeland; Virolainen, Yana; von Löwis, Sibylle; Zhao, Xiaoyi

doi:10.5194/acp-26-8089-2026

Articles | Volume 26, issue 11

https://doi.org/10.5194/acp-26-8089-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-26-8089-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 11

Research article

|

11 Jun 2026

Research article |

| 11 Jun 2026

Detection of ozone recovery in the Arctic from ground-based measurements

Caroline Jonas, Corinne Vigouroux, Bavo Langerock, Robin Björklund, Anne Boynard, Thomas Carlund, Martine De Mazière, Peter Effertz, Quentin Errera, Matthias M. Frey, José Granville, James W. Hannigan, Arno Keppens, Nis Jepsen, Rigel Kivi, Norrie Lyall, Mathias Palm, Maxime Prignon, Viktoria F. Sofieva, Kimberly Strong, Tove Svendby, David Tarasick, Laura Thölix, Roeland Van Malderen, Yana Virolainen, Sibylle von Löwis, and Xiaoyi Zhao

Data sets

Regional weighted means of groundbased ozone (O3) anomalies timeseries in the Arctic, 2000-2024 C. Jonas and C. Vigouroux https://doi.org/10.18758/74y0x62y

FTIR ozone (O3) groundbased remote sensing at Sodankylä from HR125 FTS FMI instrument (Version 1) R. Kivi et al. https://doi.org/10.18758/tzwr7tr6

CAMS global reanalysis (EAC4) monthly averaged fields Copernicus Atmosphere Monitoring Service https://doi.org/10.24381/fd75fff2

WMO-GAW/WOUDC Ozone and Ultraviolet Radiation Data WMO/GAW Ozone Monitoring Community, World Meteorological Organization-Global Atmosphere Watch Program, and World Ozone and Ultraviolet Radiation Data Centre https://doi.org/10.14287/10000001

Short summary

We study the evolution of ozone in the Arctic over the 2000–2024 period in the stratosphere (about 10 to 50 km) to assess the expected recovery of the ozone layer following the diminution of ozone-depleting substances. We merge ground-based data sets within spatially coherent regions to reduce uncertainties and we obtain positive trends for the total column everywhere in the Arctic and for the middle and upper stratosphere over Canada, but no significant trends in the lower stratosphere.