V. F. Sofieva, et al.
Merged SAGE II, Ozone cci and OMPS ozone profile dataset and evaluation of ozone trends in the stratosphere
Atmospheric Chemistry and Physics, 17(20), 12533-12552, 2017; doi: 10.5194/acp-17-12533-2017


In this paper, we present a merged dataset of ozone profiles from several satellite instruments: SAGE II on ERBS, GOMOS, SCIAMACHY and MIPAS on Envisat, OSIRIS on Odin, ACE-FTS on SCISAT, and OMPS on Suomi-NPP. The merged dataset is created in the framework of the European Space Agency Climate Change Initiative (Ozone_cci) with the aim of analyzing stratospheric ozone trends. For the merged dataset, we used the latest versions of the original ozone datasets. The datasets from the individual instruments have been extensively validated and intercompared; only those datasets which are in good agreement, and do not exhibit significant drifts with respect to collocated ground-based observations and with respect to each other, are used for merging. The long-term SAGE–CCI–OMPS dataset is created by computation and merging of deseasonalized anomalies from individual instruments. The merged SAGE–CCI–OMPS dataset consists of deseasonalized anomalies of ozone in 10_ latitude bands from 90_ S to 90_ N and from 10 to 50 km in steps of 1 km covering the period from October 1984 to July 2016. This newly created dataset is used for evaluating ozone trends in the stratosphere through multiple linear regression. Negative ozone trends in the upper stratosphere are observed before 1997 and positive trends are found after 1997. The upper stratospheric trends are statistically significant at midlatitudes and indicate ozone recovery, as expected from the decrease of stratospheric halogens that started in the middle of the 1990s and stratospheric cooling.


  author = "V. F. Sofieva and E. Kyrölä and M. Laine and J. Tamminen and D. Degenstein and A. Bourassa and C. Roth and D. Zawada and M. Weber and A. Rozanov and N. Rahpoe and G. Stiller and A. Laeng and T. von Clarmann and K. A. Walker and P. Sheese and D. Hubert and M. van Roozendael and C. Zehner and R. Damadeo and J. Zawodny and N. Kramarova and P. K. Bhartia",
  title = "Merged SAGE II, Ozone cci and OMPS ozone profile dataset and evaluation of ozone trends in the stratosphere",
  year = 2017,
  journal = "Atmospheric Chemistry and Physics",
  volume = 17,
  number = 20,
  pages = "12533-12552",
  month = "Oct",
  keywords = "SAGE II, O3",
  doi = "10.5194/acp-17-12533-2017",
  url = ""
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