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Ozone is strongly linked to climate due to its influence on Earth’s radiative budget, absorbing solar UV radiation in the stratosphere and terrestrial infrared radiation in the troposphere. Due to these dual processes, the climate impact of changes in ozone concentrations varies with the altitude. 

Human-produced chlorine- and bromine-containing gases are responsible for major ozone losses in the lower atmosphere resulting in a cooling effect on the Earth's surface. In contrast, increases in tropospheric ozone, a result of air pollution, have a warming effect on the Earth's surface, thereby contributing to the greenhouse effect.

The Ozone_cci project has been part of the ESA Climate Change Initiative (CCI) programme since it was initiated in early 2010. This project focuses on the generation of multi-decadal time-series of harmonized and consistent ozone data suitable suitable to assess long-term changes in total ozone as well as its vertical distribution.

Ozone_cci climate data records are based on satellite nadir sensors such as GOME, SCIAMACHY, GOME-2, IASI and OMI complemented by a series of limb-type instruments allowing for a comprehensive characterization of the ozone columns and vertical profiles at various horizontal scales. These data products are freely distributed to the international user community and they feed the Copernicus Climate Change Service (C3S).

Main activities include:

  • Development of state-of-the-art level-2 and level-3 ozone retrieval algorithms
  • Long-term data record generation and reprocessing of historical data sets
  • Data characterization and uncertainty analysis including geophysical validation
  • Fully traceable documentation on all steps of the data generation
  • User assessment by the project Climate Research Group (CRG) and the Climate Modeling User Group (CMUG)



The overarching objective of the Climate Change Initiative programme as laid out in the declaration approved by the ESA Member States is “to realize the full potential of the ESA EO archive to make significant contributions to the ECV (Essential Climate Variable) data bases required by the United Nations Framework Convention on Climate Change (UNFCCC)”. 

Within the Ozone_cci project, this translates into the following objectives:

  • Develop advanced level-2 and level-3 retrieval algorithms applicable to nadir and limb sensor types, and apply them to long times-series of measurements with the aim to realize the full potential of existing and historical sensors
  • Improve the information content of ozone measurements in critical altitude regions (troposphere and UTLS) using the synergy between nadir and limb-type sensors
  • Link European data records to historical non-European data series to create consistent long-series of observations covering several decades, as required for climate change-related studies
  • Bring a significant impact on ozone related research at the international level, through active involvement in the WMO/GAW Scientific Assessments of Ozone Depletion, that are compiled every four years

Latest news

Copernicus Sentinel-5P ozone boosts daily forecasts

The TROPOspheric Monitoring Instrument (TROPOMI) is the satellite instrument on board the Copernicus Sentinel-5 Precursor satellite. The Sentinel-5 Precursor (S5P) is the first of the atmospheric composition Sentinels, launched on 13 October 2017, planned for a mission of seven years. S5P/TROPOMI provides high-quality ozone data continuing the successful ESA and NASA missions on total ozone global monitoring. The S5P operational processor implements the total ozone level-2 algorithm developed within CCI leading to high-quality products from Day-1.

About the project

Ozone_cci Phase 1 was run from September 2010 until October 2013 followed by Phase 2 from  March 2014 until December 2017. The Ozone_cci+ Phase recently started in March 2019, for a new 3-year contract.

Project team

Project coordination

Royal Belgian Institute for Space Aeronomy (BIRA-IASB)

  • Dr. Michel Van Roozendael is acting as science leader and Nathalie Kalb acts as project manager.

Earth Observation science team

Royal Belgian Institute for Space Aeronomy (BIRA-IASB)

  • Dr. Christophe Lerot is working on total ozone level-2 retrievals

German Aerospace Center (DLR)

  • Dr. Diego Loyola, Dr. Melanie Coldewey-Egbers and Dr. Klaus-Peter Heue work on total ozone and ozone profile level-3 algorithms

Royal Netherlands Meteorological Institute (KNMI)

  • Dr. Ronald van der A works on MSR (Multi-Sensor Reanalysis) level-4 data product development

University of Bremen (UNI-HB)

  • Dr. Alexei Rozanov and Dr. Kai-Uwe Eichmann focus on ozone profile HARMOZ limb data products

Rutherford Appleton Laboratory (RAL)

  • Dr. Richard Siddans, Dr. Barry Latter and Dr. Brian Kerridge concentrate on nadir ozone profile level-2 algorithm development and data generation

Université Libre de Bruxelles (ULB)

  • Dr. Pierre-François Coheur and Dr. Catherine Wespes work on IASI ozone product development

Finnish Meteorological Institute (FMI)

  • Dr. Viktoria Sofieva and Dr. Johanna Tamminen focus on ozone profile level-3 data products based on limb sensors

Validation team and Climate Research Group

Royal Belgian Institute for Space Aeronomy (BIRA-IASB)

  • Dr. Jean-Christopher Lambert coordinates independent validation activities
  • Dr. Daan Hubert is working on limb-type sensor validation
  • Dr. Arno Keppens works on nadir ozone profile validation
  • Dr. Tijl Verhoelst works on total ozone validation

Aristotle University of Thessaloniki (AUTH)

  • Prof. Dimitris Balis, Dr. Mariliza Koukouli and Dr. Katerina Garane work on total ozone validation

German Aerospace Center (DLR)

  • Dr. Martin Dameris leads the Climate Research Group (CRG)

Royal Netherlands Meteorological Institute (KNMI)

  • Dr. Michiel van Weele works on ozone data record assessment as part of the CRG

Resources, data and documents


Product overview
The following data products are distributed on the Ozone_cci ftp site (no password) cci_web[at]












and provenance

TC_GOME total ozone ERS-2/GOME 2-3 1995-2011 BIRA/DLR
TC_SCIAMACHY total ozone MetOp-A/GOME-2 2-3 2002-2012 BIRA/DLR
TC_GOME2-A total ozone MetOp-A/GOME-2 2-3 2007- BIRA/DLR
TC_GOME2-B total ozone MetOp-A/GOME-2 2-3 2013- BIRA/DLR
TC_OMI total ozone Aura/OMI 2-3 2004- BIRA/DLR
TC_GTO-ECV total ozone All sensors 3 1995- BIRA/DLR
NP_IASI-A Ozone profile (nadir) MetOp-A/IASI 2 2008- ULB
NP_IASI-B Ozone profile (nadir) MetOp-B/IASI 2 2013- ULB
NP_GOME Ozone profile (nadir) ERS-2/GOME 2-3 1995-2011 RAL/KNMI
NP_SCIA Ozone profile (nadir)



2-3 2002-2012 RAL/KNMI
NP_GOME2A Ozone profile (nadir)



2-3 2007- RAL/KNMI
NP_GOME2B Ozone profile (nadir)



2-3 2013- RAL/KNMI
NP_OMI Ozone profile (nadir) Aura/OMI 2-3 2004- RAL/KNMI
HARMOZ_MIPAS Ozone profile (limb)



2-3 2002-2012 UNI-HB/KIT
HARMOZ_GOMOS Ozone profile (limb)



2-3 2002-2012 UNI-HB/FMI
HARMOZ_SCIA Ozone profile (limb) ENVISAT/ SCIAMACHY 2-3 2002-2012


HARMOZ_SAGE-2 Ozone profile (limb)



2-3 1984-2005 UNI-HB/NASA
HARMOZ_HALOE Ozone profile (limb)



2-3 1991-2005 UNI-HB/FMI
HARMOZ_OSIRIS Ozone profile (limb)



2-3 2001- UNI-HB/SASKA
HARMOZ_SMR Ozone profile (limb)



2-3 2001- UNI-HB/Chalmers
HARMOZ_ACE Ozone profile (limb)



2-3 2004- UNI-HB/UoT
HARMOZ_MLS Ozone profile (limb)



2-3 2004- UNI-HB/NASA
HARMOZ_SABER Ozone profile (limb) TIMED/SABER 2-3 2002- UNI-HB/NASA
LMZ_MERGED Ozone profile (limb) All sensors 3 1984- FMI
LP_LatLon-MERGED Ozone profile (limb) Selection 3 2002- FMI

Tropospheric ozone column

LNTOC_SCIA Tropospheric ozone column SCIAMACHY 3 2002-2012 UNI_HB
LNTOC_MIPAS-SCIA Tropospheric ozone column MIPAS, SCIA 3 2002-2012 UNI-HB


Key documents

All key documents are listed below:


The following peer-reviewing publications have been produced:


Coldewey-Egbers, M., Loyola, D., Labow, G., and Frith, S.: Comparison of GTO-ECV and Adjusted-MERRA total ozone columns from the last two decades and assessment of interannual variability, Atmos. Meas. Tech. Discuss.,, in review, 2019.

Galytska, E., Rozanov, A., Chipperfield, M. P., Dhomse, Sandip. S., Weber, M., Arosio, C., Feng, W., and Burrows, J. P.: Dynamically controlled ozone decline in the tropical mid-stratosphere observed by SCIAMACHY, Atmos. Chem. Phys., 19, 767-783,, 2019.

Garane, K., Koukouli, M.-E., Verhoelst, T., Lerot, C., Heue, K.-P., Fioletov, V., Balis, D., Bais, A., Bazureau, A., Dehn, A., Goutail, F., Granville, J., Griffin, D., Hubert, D., Keppens, A., Lambert, J.-C., Loyola, D., McLinden, C., Pazmino, A., Pommereau, J.-P., Redondas, A., Romahn, F., Valks, P., Van Roozendael, M., Xu, J., Zehner, C., Zerefos, C., and Zimmer, W.: TROPOMI/S5P total ozone column data: global ground-based validation and consistency with other satellite missions, Atmos. Meas. Tech., 12, 5263–5287,, 2019.

Inness, A., Flemming, J., Heue, K.-P., Lerot, C., Loyola, D., Ribas, R., Valks, P., van Roozendael, M., Xu, J., and Zimmer, W.: Monitoring and assimilation tests with TROPOMI data in the CAMS system: near-real-time total column ozone, Atmos. Chem. Phys., 19, 3939–3962,, 2019.

Keppens, A., Compernolle, S., Verhoelst, T., Hubert, D., and Lambert, J.-C.: Harmonization and comparison of vertically resolved atmospheric state observations: methods, effects, and uncertainty budget, Atmos. Meas. Tech., 12, 4379–4391,, 2019.

Loyola, D. G., Xu, J., Heue, K.-P., and Zimmer, W.: Applying FP_ILM to the retrieval of geometry-dependent effective Lambertian equivalent reflectivity (GE_LER) to account for BRDF effects on UVN satellite measurements of trace gases, clouds and aerosols, Atmos. Meas. Tech. Discuss.,, in review, 2019.

SPARC/IO3C/GAW, 2019: SPARC/IO3C/GAW Report on Long-term Ozone Trends and Uncertainties in the Stratosphere. I. Petropavlovskikh, S. Godin-Beekmann, D. Hubert, R. Damadeo, B. Hassler, V. Sofieva (Eds.), SPARC Report No. 9, GAW Report No. 241, WCRP-17/2018, doi: 10.17874/f899e57a20b, available at

van Peet, J. C. A. and van der A, R. J.: Deriving tropospheric ozone from assimilated profiles, Atmos. Chem. Phys., 19, 8297-8309,, 2019.

Wespes, C., Hurtmans, D., Chabrillat, S., Ronsmans, G., Clerbaux, C., and Coheur, P.-F.: Is the recovery of stratospheric O3 speeding up in the Southern Hemisphere? An evaluation from the first IASI decadal record (2008–2017), Atmos. Chem. Phys., 19, 14031–14056,, 2019.


Arosio, C., Rozanov, A., Malinina, E., Eichmann, K.-U., von Clarmann, T., and Burrows, J. P.: Retrieval of ozone profiles from OMPS limb scattering observations, Atmos. Meas. Tech., 11, 2135-2149,, 2018. 

Ball, W. T., Alsing, J., Mortlock, D. J., Staehelin, J., Haigh, J. D., Peter, T., Tummon, F., Stübi, R., Stenke, A., Anderson, J., Bourassa, A., Davis, S. M., Degenstein, D., Frith, S., Froidevaux, L., Roth, C., Sofieva, V., Wang, R., Wild, J., Yu, P., Ziemke, J. R., and Rozanov, E. V.: Evidence for a continuous decline in lower stratospheric ozone offsetting ozone layer recovery, Atmos. Chem. Phys., 18, 1379-1394,, 2018.

Boynard, A., Hurtmans, D., Garane, K., Goutail, F., Hadji-Lazaro, J., Koukouli, M. E., Wespes, C., Vigouroux, C., Keppens, A., Pommereau, J.-P., Pazmino, A., Balis, D., Loyola, D., Valks, P., Sussmann, R., Smale, D., Coheur, P.-F., and Clerbaux, C.: Validation of the IASI FORLI/EUMETSAT ozone products using satellite (GOME-2), ground-based (Brewer–Dobson, SAOZ, FTIR) and ozonesonde measurements, Atmos. Meas. Tech., 11, 5125-5152,, 2018.

Garane, K., Lerot, C., Coldewey-Egbers, M., Verhoelst, T., Koukouli, M. E., Zyrichidou, I., Balis, D. S., Danckaert, T., Goutail, F., Granville, J., Hubert, D., Keppens, A., Lambert, J.-C., Loyola, D., Pommereau, J.-P., Van Roozendael, M., and Zehner, C.: Quality assessment of the Ozone_cci Climate Research Data Package (release 2017) – Part 1: Ground-based validation of total ozone column data products, Atmos. Meas. Tech., 11, 1385-1402,, 2018.

Gaudel, A, et al.: Ozone Assessment Report: Present-day distribution and trends of tropospheric ozone relevant to climate and global atmospheric chemistry model evaluation. Elem Sci An th, 6: 39. DOI:, 2018.

Keppens, A., Lambert, J.-C., Granville, J., Hubert, D., Verhoelst, T., Compernolle, S., Latter, B., Kerridge, B., Siddans, R., Boynard, A., Hadji-Lazaro, J., Clerbaux, C., Wespes, C., Hurtmans, D. R., Coheur, P.-F., van Peet, J. C. A., van der A, R. J., Garane, K., Koukouli, M. E., Balis, D. S., Delcloo, A., Kivi, R., Stübi, R., Godin-Beekmann, S., Van Roozendael, M., and Zehner, C.: Quality assessment of the Ozone_cci Climate Research Data Package (release 2017) – Part 2: Ground-based validation of nadir ozone profile data products, Atmos. Meas. Tech., 11, 3769-3800,, 2018.

van Peet, J. C. A., van der A, R. J., Kelder, H. M., and Levelt, P. F.: Simultaneous assimilation of ozone profiles from multiple UV-VIS satellite instruments, Atmos. Chem. Phys., 18, 1685-1704,, 2018.

Weber, M., Coldewey-Egbers, M., Fioletov, V. E., Frith, S. M., Wild, J. D., Burrows, J. P., Long, C. S., and Loyola, D.: Total ozone trends from 1979 to 2016 derived from five merged observational datasets – the emergence into ozone recovery, Atmos. Chem. Phys., 18, 2097-2117,, 2018.
Chipperfield, M. P., Bekki, S., Dhomse, S., Harris, N. R. P., Hassler, B., Hossaini, R., Steinbrecht, W., Thiéblemont, R. and Weber, M.: Detecting recovery of the stratospheric ozone layer, Nature, 549, 211–218, doi:10.1038/nature23681, 2017.
Sofieva, V. F., Kyrölä, E., Laine, M., Tamminen, J., Degenstein, D., Bourassa, A., Roth, C., Zawada, D., Weber, M., Rozanov, A., Rahpoe, N., Stiller, G., Laeng, A., von Clarmann, T., Walker, K. A., Sheese, P., Hubert, D., van Roozendael, M., Zehner, C., Damadeo, R., Zawodny, J., Kramarova, N., and Bhartia, P. K.: Merged SAGE II, Ozone_cci and OMPS ozone profile dataset and evaluation of ozone trends in the stratosphere, Atmos. Chem. Phys., 17, 12533-12552,, 2017. 
Merchant, C. J., Paul, F., Popp, T., Ablain, M., Bontemps, S., Defourny, P., Hollmann, R., Lavergne, T., Laeng, A., de Leeuw, G., Mittaz, J., Poulsen, C., Povey, A. C., Reuter, M., Sathyendranath, S., Sandven, S., Sofieva, V. F., and Wagner, W.: Uncertainty information in climate data records from Earth observation, Earth Syst. Sci. Data, 9, 511-527,, 2017.
Lauer, A., V. Eyring, M. Righi, M. Buchwitz, P. Defourny, M. Evaldsson, P. Friedlingstein, R. de Jeu, G. de Leeuw, A. Loew, C. J. Merchant, B. Müller; T. Popp, M. Reuter, S. Sandven, D. Senftleben, M. Stengel, M. Van Roozendael, S. Wenzel, U. Willén, Benchmarking CMIP5 models with a subset of ESA CCI Phase 2 data using the ESMValTool, Remote Sens. Environ., doi:, 2017. View here.

Boynard, A., Hurtmans, D., Koukouli, M. E., Goutail, F., Bureau, J., Safieddine, S., Lerot, C., Hadji-Lazaro, J., Wespes, C., Pommereau, J.-P., Pazmino, A., Zyrichidou, I., Balis, D., Barbe, A., Mikhailenko, S. N., Loyola, D., Valks, P., Van Roozendael, M., Coheur, P.-F., and Clerbaux, C.: Seven years of IASI ozone retrievals from FORLI: validation with independent total column and vertical profile measurements, Atmos. Meas. Tech., 9, 4327-4353, doi:10.5194/amt-9-4327-2016, 2016. View here.
Dragani, R.: A comparative analysis of UV nadir-backscatter and infrared limb-emission ozone data assimilation, Atmos. Chem. Phys., 16, 8539-8557, doi:10.5194/acp-16-8539-2016, 2016. View here.
Heue, K.-P., Coldewey-Egbers, M., Delcloo, A., Lerot, C., Loyola, D., Valks, P., and van Roozendael, M.: Trends of tropical tropospheric ozone from 20 years of European satellite measurements and perspectives for the Sentinel-5 Precursor, Atmos. Meas. Tech., 9, 5037-5051, doi:10.5194/amt-9-5037-2016, 2016.View here.
Hubert, D., Lambert, J.-C., Verhoelst, T., Granville, J., Keppens, A., Baray, J.-L., Bourassa, A. E., Cortesi, U., Degenstein, D. A., Froidevaux, L., Godin-Beekmann, S., Hoppel, K. W., Johnson, B. J., Kyrölä, E., Leblanc, T., Lichtenberg, G., Marchand, M., McElroy, C. T., Murtagh, D., Nakane, H., Portafaix, T., Querel, R., Russell III, J. M., Salvador, J., Smit, H. G. J., Stebel, K., Steinbrecht, W., Strawbridge, K. B., Stübi, R., Swart, D. P. J., Taha, G., Tarasick, D. W., Thompson, A. M., Urban, J., van Gijsel, J. A. E., Van Malderen, R., von der Gathen, P., Walker, K. A., Wolfram, E., and Zawodny, J. M.: Ground-based assessment of the bias and long-term stability of 14 limb and occultation ozone profile data records, Atmos. Meas. Tech., 9, 2497-2534, doi:10.5194/amt-9-2497-2016, 2016. View here.
Kauppi, A., Tuinder, O. N. E., Tukiainen, S., Sofieva, V., and Tamminen, J.: Comparison of GOME-2/Metop-A ozone profiles with GOMOS, OSIRIS and MLS measurements, Atmos. Meas. Tech., 9, 249-261, doi:10.5194/amt-9-249-2016, 2016.View here.
Koukouli, M. E., Zara, M., Lerot, C., Fragkos, K., Balis, D., van Roozendael, M., Allart, M. A. F., and van der A, R. J.: The impact of the ozone effective temperature on satellite validation using the Dobson spectrophotometer network, Atmos. Meas. Tech., 9, 2055-2065, doi:10.5194/amt-9-2055-2016, 2016. View here.
Meul, S., M. Dameris, U. Langematz, J. Abalichin, A. Kerschbaumer, A. Kubin, and S. Oberländer-Hayn, Impact of rising greenhouse gas concentrations on future tropical ozone and UV exposure, Geophys. Res. Lett., 43, 2919-2927, doi: 10.1002/2016GL067997, 2016. View here.
Wespes, C., Hurtmans, D., Emmons, L. K., Safieddine, S., Clerbaux, C., Edwards, D. P., and Coheur, P.-F.: Ozone variability in the troposphere and the stratosphere from the first 6 years of IASI observations (2008–2013), Atmos. Chem. Phys., 16, 5721-5743, doi:10.5194/acp-16-5721-2016, 2016. View here.

Coldewey-Egbers, M., Loyola, D. G., Koukouli, M., Balis, D., Lambert, J.-C., Verhoelst, T., Granville, J., van Roozendael, M., Lerot, C., Spurr, R., Frith, S. M., and Zehner, C.: The GOME-type Total Ozone Essential Climate Variable (GTO-ECV) data record from the ESA Climate Change Initiative, Atmos. Meas. Tech., 8, 3923-3940, doi:10.5194/amt-8-3923-2015, 2015. View here.
Keppens, A., Lambert, J.-C., Granville, J., Miles, G., Siddans, R., van Peet, J. C. A., van der A, R. J., Hubert, D., Verhoelst, T., Delcloo, A., Godin-Beekmann, S., Kivi, R., Stübi, R., and Zehner, C.: Round-robin evaluation of nadir ozone profile retrievals: methodology and application to MetOp-A GOME-2, Atmos. Meas. Tech., 8, 2093-2120, doi:10.5194/amt-8-2093-2015, 2015. View here.
Koukouli, M., D. Balis, I. Zyrichidou, C. Lerot, M. Van Roozendael,  J-C. Lambert, J. Granville, J-P. Pommereau, F. Goutail, G. Labow, S. Frith, D. Loyola, R. Spurr, and C. Zehner, Evaluating a new homogeneous total ozone climate data record from GOME/ERS-2, SCIAMACHY/Envisat, and GOME-2/MetOp-A, J. Geophys. Res. Atmos., 120(23), 12,212–296,312, doi:10.1002/2015JD023699, 2015. View here.
Laeng, A.; Hubert, D.; Verhoelst, T.; von Clarmann, T.; Dinelli, B.M.; Dudhia, A.; Raspollini, P.; Stiller, G.; Grabowski, U.; Keppens, A.; Kiefer, M. ; Sofieva, V.; Froidevaux, L.; Walker, K.; Lambert, J.-C.; Zehner, C., The ozone climate change initiative: Comparison of four Level-2 processors for the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS), Remote Sens. Environ., doi:, 2015. View here.
Miles, G. M., Siddans, R., Kerridge, B. J., Latter, B. G., and Richards, N. A. D.: Tropospheric ozone and ozone profiles retrieved from GOME-2 and their validation, Atmos. Meas. Tech., 8, 385-398, doi:10.5194/amt-8-385-2015, 2015. View here.

Rahpoe, N., Weber, M., Rozanov, A. V., Weigel, K., Bovensmann, H., Burrows, J. P., Laeng, A., Stiller, G., von Clarmann, T., Kyrölä, E., Sofieva, V. F., Tamminen, J., Walker, K., Degenstein, D., Bourassa, A. E., Hargreaves, R., Bernath, P., Urban, J., and Murtagh, D. P., Relative drifts and biases between six ozone limb satellite measurements from the last decade, Atmos. Meas. Tech., 8, 4369-4381, doi:10.5194/amt-8-4369-2015, 2015. View here.
Safieddine, S., Boynard, A., Hao, N., Huang, F., Wang, L., Ji, D., Barret, B., Ghude, S. D., Coheur, P.-F., Hurtmans, D., and Clerbaux, C.: Tropospheric Ozone Variability during the East Asian Summer Monsoon as Observed by Satellite (IASI), Aircraft (MOZAIC) and Ground Stations, Atmos. Chem. Phys. Discuss., 15, 31925-31950, doi:10.5194/acpd-15-31925-2015, 2015. View here.
Sheese, P. E., C. D. Boone, and K. A. Walker, Detecting physically unrealistic outliers in ACE-FTS atmospheric measurements, Atmos. Meas. Tech., 8, 741-750, 2015. View here.
Verhoelst, T., Granville, J., Hendrick, F., Köhler, U., Lerot, C., Pommereau, J.-P., Redondas, A., Van Roozendael, M., and Lambert, J.-C.: Metrology of ground-based satellite validation: co-location mismatch and smoothing issues of total ozone comparisons, Atmos. Meas. Tech., 8, 5039-5062, doi:10.5194/amt-8-5039-2015, 2015. View here.
Zhang, Y., Y. Liu, C. Liu, and V. F. Sofieva: Satellite measurements of the Madden–Julian oscillation in wintertime stratospheric ozone over the Tibetan Plateau and East Asia, Adv. Atmos. Sci., 32(11), 1481–1492, doi:10.1007/s00376-015-5005-y, 2015. View here.
Aschmann, J., Burrows, J. P., Gebhardt, C., Rozanov, A., Hommel, R., Weber, M., and Thompson, A. M., On the hiatus in the acceleration of tropical upwelling since the beginning of the 21st century, Atmos. Chem. Phys., 14, 12803-12814, doi:10.5194/acp-14-12803-2014, 2014. View here.
Adams, C., A. E. Bourassa, V. Sofieva, L. Froidevaux, C. A. McLinden, D. Hubert, J. -C. Lambert, C. E. Sioris, and D. A. Degenstein, Assessment of Odin-OSIRIS ozone measurements from 2001 to the present using MLS, GOMOS, and ozone sondes, Atmos. Meas. Tech., 7, 49-64, doi:10.5194/amt-7-49-2014, 2014. View here.
Chiou, E. W., Bhartia, P. K., McPeters, R. D., Loyola, D. G., Coldewey-Egbers, M., Fioletov, V. E., Van Roozendael, M., Spurr, R., Lerot, C., and Frith, S. M.: Comparison of profile total ozone from SBUV (v8.6) with GOME-type and ground-based total ozone for a 16-year period (1996 to 2011), Atmos. Meas. Tech., 7, 1681-1692, doi:10.5194/amt-7-1681-2014, 2014. View here.
Coldewey-Egbers, M., Loyola R., D. G., Braesicke, P., Dameris, M., Van Roozendael, M., Lerot, C., and Zimmer, W., A new health check of the ozone layer at global and regional scales. Geophysical Research Letters, Vol.41, pp. 4363-4372, doi:10.1002/2014GL060212, 2014. View here.
Ebojie, F., von Savigny, C., Ladstätter-Weißenmayer, A., Rozanov, A., Weber, M., Eichmann, K., Bötel, S., Rahpoe, N., Bovensmann, H., and Burrows, J. P., Tropospheric column amount of ozone retrieved from SCIAMACHY limb-nadir-matching observations, Atmos. Meas. Tech., 7, 2073-2096, doi:10.5194/amt-7-2073-2014, 2014. View here.
Eckert, E., T. von Clarmann, M. Kiefer, G. P. Stiller, S. Lossow, N. Glatthor, D. A. Degenstein, L. Froidevaux, S. Godin-Beekmann, T. Leblanc, S. McDermid, M. Pastel, W. Steinbrecht, D. P. J. Swart, K. A. Walker, and P. F. Bernath, Drift-corrected trends and periodic variations in MIPAS IMK/IAA ozone measurements, Atmos. Chem. Phys., 14, 2571-2589, doi:10.5194/acp-14-2571-2014, 2014. View here.
Gebhardt, C., Rozanov, A., Hommel, R., Weber, M., Bovensmann, H., Burrows, J. P., Degenstein, D., Froidevaux, L., and Thompson, A. M., Stratospheric ozone trends and variability as seen by SCIAMACHY during the last decade, Atmos. Chem. Phys., 14, 831-846, doi:10.5194/acp-14-831-2014, 2014. View here.
Laeng, A., Grabowski, U., von Clarmann, T., Stiller, G., Glatthor, N., Höpfner, M., Kellmann, S., Kiefer, M., Linden, A., Lossow, S., Sofieva, V., Petropavlovskikh, I., Hubert, D., Bathgate, T., Bernath, P., Boone, C. D., Clerbaux, C., Coheur, P., Damadeo, R., Degenstein, D., Frith, S., Froidevaux, L., Gille, J., Hoppel, K., McHugh, M., Kasai, Y., Lumpe, J., Rahpoe, N., Toon, G., Sano, T., Suzuki, M., Tamminen, J., Urban, J., Walker, K., Weber, M., and Zawodny, J., Validation of MIPAS IMK/IAA V5R_O3_224 ozone profiles, Atmos. Meas. Tech., 7, 3971-3987, doi:10.5194/amt-7-3971-2014, 2014. View here.
Lerot, C., M. Van Roozendael, R. Spurr, D. Loyola, M. Coldewey-Egbers, S. Kochenova, J. van Gent, M. Koukouli, D. Balis, J.-C. Lambert, J. Granville, C. Zehner, Homogenized total ozone data records from the European sensors GOME/ERS-2, SCIAMACHY/Envisat and GOME-2/Metop-A, J. Geophys. Res., 119, 1–20, doi:10.1002/2013JD020831, 2014. View here.
Safieddine, S., Boynard, A., Coheur, P.-F., Hurtmans, D., Pfister, G., Quennehen, B., Thomas, J. L., Raut, J.-C., Law, K. S., Klimont, Z., Hadji-Lazaro, J., George, M., and Clerbaux, C.: Summertime tropospheric ozone assessment over the Mediterranean region using the thermal infrared IASI/MetOp sounder and the WRF-Chem model, Atmos. Chem. Phys., 14, 10119-10131, doi:10.5194/acp-14-10119-2014, 2014. View here.
Sofieva, V. F., Tamminen, J., Kyrölä, E., Mielonen, T., Veefkind, P., Hassler, B., and Bodeker, G.E.: A novel tropopause-related climatology of ozone profiles, Atmos. Chem. Phys., 14, 283-299, doi:10.5194/acp-14-283-2014, 2014. View here.
Sofieva, V. F., Kalakoski, N., Päivärinta, S.-M., Tamminen, J., Laine, M., and Froidevaux, L.: On sampling uncertainty of satellite ozone profile measurements, Atmos. Meas. Tech., 7, 1891-1900, doi:10.5194/amt-7-1891-2014, 2014. View here.
Sofieva, V. F., Tamminen, J., Kyrölä, E., Laeng, A., von Clarmann, T., Dalaudier, F., Hauchecorne, A., Bertaux, J.-L., Barrot, G., Blanot, L., Fussen, D. and Vanhellemont, F.: Validation of GOMOS ozone precision estimates in the stratosphere, Atmos. Meas. Tech., 7(7), 2147-2158, doi:10.5194/amt-7-2147-2014, 2014. View here.
Valks, P., Hao, N., Gimeno Garcia, S., Loyola, D., Dameris, M., Jöckel, P., and Delcloo, A., Tropical tropospheric ozone column retrieval for GOME-2, Atmos. Meas. Tech., 7, 2513-2530, doi:10.5194/amt-7-2513-2014, 2014. View here.
van Peet, J. C. A., van der A, R. J., Tuinder, O. N. E., Wolfram, E., Salvador, J., Levelt, P. F., and Kelder, H. M.: Ozone ProfilE Retrieval Algorithm (OPERA) for nadir-looking satellite instruments in the UV–VIS, Atmos. Meas. Tech., 7, 859-876, doi:10.5194/amt-7-859-2014, 2014. View here.

Adams, C., A. E. Bourassa, A. F. Bathgate, C. A. McLinden, N. D. Lloyd, C. Z. Roth, E. J. Llewellyn, J. M. Zawodny, D. E. Flittner, G. L. Manney, W. H. Daffer, and D. A. Degenstein, Characterization of Odin-OSIRIS ozone profiles with the SAGE II dataset, Atmos. Meas. Tech., 6, 1447-1459, 2013. View here.
Dameris, M. and P. Jöckel, Numerical modeling of climate-chemistry connections: Recent developments and future challenges, Atmosphere, 4, 132-156, doi: 10.3390/atmos4020132, 2013. View here.
Kyrölä, E., M. Laine, V. Sofieva, J. Tamminen, S.-M. Päivärinta, S. Tukiainen, J. Zawodny, and L. Thomason, Combined SAGE II-GOMOS ozone profile data set 1984–2011 and trend analysis of the vertical distribution of ozone, Atmos. Chem. Phys., 13, 10645-10658, doi:10.5194/acp-13-10645-2013, 2013. View here.
Safieddine, S., C. Clerbaux, M. George, J. Hadji-Lazaro, D. Hurtmans, P.-F. Coheur, C. Wespes, D. Loyola, P. Valks, and N. Hao, Tropospheric ozone and nitrogen dioxide measurements in urban and rural regions as seen by IASI and GOME-2, J. Geophys. Res. Atmos., 118, 10,555–10,566, doi:10.1002/jgrd.50669, 2013. View here.
Rahpoe, N., von Savigny, C., Weber, M., Rozanov, A.V., Bovensmann, H., and Burrows, J. P.: Error budget analysis of SCIAMACHY limb ozone profile retrievals using the SCIATRAN model, Atmos. Meas. Tech., 6, 2825-2837, doi:10.5194/amt-6-2825-2013, 2013. View here.

Sioris, C. E., McLinden, C. A., Fioletov, V. E., Adams, C., Zawodny, J. M., Bourassa, A. E., and Degenstein, D. A.: Trend and variability in ozone in the tropical lower stratosphere over 2.5 solar cycles observed by SAGE II and OSIRIS, Atmos. Chem. Phys. Discuss., 13, 16661-16697, doi:10.5194/acpd-13-16661-2013, 2013. View here.
Sonkaew, T., C. von Savigny, K.-U. Eichmann, M. Weber, A. Rozanov, H. Bovensmann, and J. P. Burrows, Chemical ozone loss in Arctic and Antarctic polar winter/spring season derived from SCIAMACHY limb measurements 2002-2009, Atmos. Chem. Phys., 13, doi:10.5194/acp-13-1809-2013, 1809-1835, 2013. View here.
Sofieva, V. F., Rahpoe, N., Tamminen, J., Kyrölä, E., Kalakoski, N., Weber, M., Rozanov, A., von Savigny, C., Laeng, A., von Clarmann, T., Stiller, G., Lossow, S., Degenstein, D., Bourassa, A., Adams, C., Roth, C., Lloyd, N., Bernath, P., Hargreaves, R. J., Urban, J., Murtagh, D., Hauchecorne, A., Dalaudier, F., van Roozendael, M., Kalb, N., and Zehner, C.: Harmonized dataset of ozone profiles from satellite limb and occultation measurements, Earth Syst. Sci. Data, 5, 349-363, doi:10.5194/essd-5-349-2013, 2013. View here.
Spurr, R., C. Lerot, V. Natraj, M. Van Roozendael, D. Loyola, Linearization of the Principal Component Analysis Method for Radiative Transfer Acceleration: Application to Retrieval Algorithms and Sensitivity Studies, Journal of Quantitative Spectroscopy & Radiative Transfer, 125, 1–17, 2013. View here
Braesicke, P., O. See Hai and A. Abu Samah, Properties of strong off-shore Borneo vortices: a composite analysis of flow pattern and composition as captured by ERA-Interim, Atmosph. Sci. Lett., 13, 128-132. doi: 10.1002/asl.372, 2012. View here.
Cai, D., M. Dameris, H. Garny, and T. Runde, Implications of all season Arctic sea-ice anomalies on the stratosphere, Atmos. Chem. Phys., 12, 11819-11831, doi: 10.5194/acp-12-11819-2012, 2012. View here.
Dameris, M., Loyola D., Recent and future evolution of the stratospheric ozone layer, in Atmospheric Physics: Background - Methods - Trends, U. Schumann (Ed), Springer, ISBN 978-3642301827, pp. 747-762, 2012.
Dameris, M. and M.P. Baldwin, Impact of climate change on the stratospheric ozone layer, Chapter 8 in Stratospheric Ozone Depletion and Climate Change, Ed. Rolf Müller, Publisher: RSC Publishing, ISBN: 978-84973-318-2, doi: 10.1039/9781849733182-00214, pp. 214-252, 2012. View here.
Dameris, M. and D. Loyola, Recent and future evolution of the stratospheric ozone layer, Chapter 45 in Atmospheric Physics, Background-Methods-Trends, Ed. U. Schumann, Springer Heidelberg New York Dordrecht London, ISBN 978-3-642-30182-7, doi: 10.1007/978-3-642-30183-4, pp.747-761, 2012. View here.
Loyola, D., M. Coldewey-Egbers, Multi-sensor data merging with stacked neural networks for the creation of satellite long-term climate data records, EURASIP Journal on Advances in Signal Processing, vol. 2012, no. 1, 2012. View here.
Mieruch, S., M. Weber, C. von Savigny, A. Rozanov, H. Bovensmann, J. P. Burrows, P. F. Bernath, C. D. Boone, L. Froidevaux, L. L. Gordley, M. G. Mlynczak, J. M. Russell III, L. W. Thomason, K. A. Walker, and J. M. Zawodny, Global and long-term comparison of SCIAMACHY limb ozone profiles with correlative satellite data (2002-2008), Atmos. Meas. Tech., 5, 771-788, doi:10.5194/amt-5-771-2012, 2012. View here.
Miyazaki, K., H.J. Eskes, K. Sudo, M. Takigawa, M. van Weele and K.F. Boersma, 2012, Simultaneous assimilation of satellite NO2, O3, CO, and HNO3 data for the analysis of tropospheric chemical composition and emissions, Atm. Chem. Phys., 12, 9545-9579, doi:10.5194/acp-12-9545-2012. View here.
Richards, N. A. D., Arnold, S. R., Chipperfield, M. P., Miles, G., Rap, A., Siddans, R., Monks, S. A., and Hollaway, M. J., Source attribution and radiative impacts of the Mediterranean summertime ozone maximum: a satellite and model perspective, Atmos. Chem. Phys. Discuss., 12, 27219-27254, doi:10.5194/acpd-12-27219-2012, 2012. View here.
Van Roozendael, M., R. Spurr, D. Loyola, C. Lerot, D. Balis, J-C. Lambert, W. Zimmer, J. van Gent, J. van Geffen, M. Koukouli, J. Granville, A. Doicu, C. Fayt, C. Zehner, Sixteen years of GOME/ERS2 total ozone data: the new direct-fitting GOME Data Processor (GDP) Version 5: I. Algorithm Description, J. Geophys. Res., 117, D3, doi:10.1029/2011JD016471, 2012. View here.
Dameris, M., Loyola D., Chemistry-Climate Connections – Interaction of Physical, Dynamical, and Chemical Processes in Earth Atmosphere, in Climate Change - Geophysical Foundations and Ecological Effects, J. Blanco, H. Kheradmand (Eds), In Tech, ISBN 978-953-307-419-1, pp. 1-26, 2011. View here.
Laat, A.T.J. de and M. van Weele, 2011, The 2010 Antarctic ozone hole: Observed reduction in ozone destruction by minor sudden stratospheric warmings, Scientific Reports, 1, 38, 1-8, doi:DOI: 10.1038/srep00038. View here.
Mijling, B., O.N.E. Tuinder, R.F. van Oss and R.J. van der A, Improving ozone profile retrieval from spaceborne UV backscatter spectrometers using convergence behaviour diagnostics, Atmospheric Measurement Techniques, 2010, 3, 1555-1568, doi:10.5194/amt-3-1555-2010. View here.

Contact us / support

Use the following emails to contact the Ozone_cci team:

  • General and technical support: ozone_cci[at]
  • Scientific leader: michel.vanroozendael[at]
  • Project manager:nathalie.kalb[at]
  • ESA technical officer: christian.retscher[at]