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<p>We examine the long-term trends in Arctic stratospheric ozone using satellite, ozonesonde and ground-based measurements for the period 1988–2024. Our analysis reveals statistically significant positive trends (up to 0.915 ± 0.251%/dec) in the upper stratospheric ozone (5–1&#xa0;hPa) with the Stratospheric Water and Ozone Satellite Homogenized (SWOOSH) and the merged satellite (SAGE-CCI-OMPS) data. The assessment of total column ozone (TCO) also shows significant positive trends in the merged satellite (8.51 ± 6.03 DU/dec) and ground-based (6.51 ± 3.88 DU/dec) measurements in 2000–2024. In addition, the combined ground-based data reveal significant positive trends in the southern Arctic stations (Lerwick, Scoresbysund, Sodankylä, Churchill, Andøya and Oslo) in autumn (9.11 ± 2.38 DU/dec) and spring (6.24 ± 4.71 DU/dec). The analysis for different post-2000 periods finds a high impact of the unprecedented ozone depletion event of 2020 on the estimated trends. However, the selected four stations still show positive trends in 2000–2024. Though the TCO measurements yield significant positive trends, the vertical profiles yet to show any recovery signature in the lower stratosphere.</p>

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Tracing the signatures of ozone recovery in the Arctic ozone

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月9日

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  • Sathyanath Anjali,
  • Jayanarayanan Kuttippurath

摘要

We examine the long-term trends in Arctic stratospheric ozone using satellite, ozonesonde and ground-based measurements for the period 1988–2024. Our analysis reveals statistically significant positive trends (up to 0.915 ± 0.251%/dec) in the upper stratospheric ozone (5–1 hPa) with the Stratospheric Water and Ozone Satellite Homogenized (SWOOSH) and the merged satellite (SAGE-CCI-OMPS) data. The assessment of total column ozone (TCO) also shows significant positive trends in the merged satellite (8.51 ± 6.03 DU/dec) and ground-based (6.51 ± 3.88 DU/dec) measurements in 2000–2024. In addition, the combined ground-based data reveal significant positive trends in the southern Arctic stations (Lerwick, Scoresbysund, Sodankylä, Churchill, Andøya and Oslo) in autumn (9.11 ± 2.38 DU/dec) and spring (6.24 ± 4.71 DU/dec). The analysis for different post-2000 periods finds a high impact of the unprecedented ozone depletion event of 2020 on the estimated trends. However, the selected four stations still show positive trends in 2000–2024. Though the TCO measurements yield significant positive trends, the vertical profiles yet to show any recovery signature in the lower stratosphere.