Intercomparison of tropospheric ozone column datasets from combined nadir and limb satellite observations

Arosio, Carlo; Sofieva, Viktoria; Orfanoz-Cheuquelaf, Andrea; Rozanov, Alexei; Heue, Klaus-Peter; Loyola, Diego; Malina, Edward; Stauffer, Ryan M.; Tarasick, David; Van Malderen, Roeland; Ziemke, Jerry R.; Weber, Mark

doi:https://doi.org/10.5194/amt-18-3247-2025

Articles | Volume 18, issue 14

https://doi.org/10.5194/amt-18-3247-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Tropospheric Ozone Assessment Report Phase II (TOAR-II) Community...

https://doi.org/10.5194/amt-18-3247-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 14

Research article

|

17 Jul 2025

Research article |

| 17 Jul 2025

Intercomparison of tropospheric ozone column datasets from combined nadir and limb satellite observations

Carlo Arosio, Viktoria Sofieva, Andrea Orfanoz-Cheuquelaf, Alexei Rozanov, Klaus-Peter Heue, Diego Loyola, Edward Malina, Ryan M. Stauffer, David Tarasick, Roeland Van Malderen, Jerry R. Ziemke, and Mark Weber

Supplement

https://doi.org/10.5194/amt-18-3247-2025-supplement

Data sets

Tropospheric ozone column from Limb-Nadir matching of SCIAMACHY and OMPS observations, merged to cover the 2003-2023 period (v1.0) Carlo Arosio https://doi.org/10.5281/zenodo.15364058

OMI-MLS, OMPS-MERRA and EPIC-MERRA TrOC datasets Jerry Ziemke https://acd-ext.gsfc.nasa.gov/Data_services/cloud_slice/

HEGIFTOM TrOC: HEGIFTOM (partial) tropospheric ozone column time series Roeland Van Malderen et al. https://hegiftom.meteo.be/datasets/tropospheric-ozone-columns-trocs

Short summary

Tropospheric ozone affects air quality and climate, being a pollutant and a greenhouse gas. We analyze satellite data of tropospheric ozone columns obtained by combining two types of observations: one providing stratospheric and the other total ozone. We compare common climatological features and study the influence of the tropopause (troposphere to stratosphere boundary) on the results. We also examine trends over the last 20 years and compare satellite data with ozonesondes to identify drifts.