Assessment of 16-year tropospheric ozone trends from the IASI Climate Data Record

Boynard, Anne; Wespes, Catherine; Hadji-Lazaro, Juliette; Sinnathamby, Selviga; Hurtmans, Daniel; Coheur, Pierre-François; Doutriaux-Boucher, Marie; Onderwaater, Jacobus; Steinbrecht, Wolfgang; Pennington, Elyse A.; Bowman, Kevin; Clerbaux, Cathy

doi:https://doi.org/10.5194/acp-25-11719-2025

Articles | Volume 25, issue 19

https://doi.org/10.5194/acp-25-11719-2025

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

https://doi.org/10.5194/acp-25-11719-2025

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

Articles | Volume 25, issue 19

Research article

|

01 Oct 2025

Research article |

| 01 Oct 2025

Assessment of 16-year tropospheric ozone trends from the IASI Climate Data Record

Anne Boynard, Catherine Wespes, Juliette Hadji-Lazaro, Selviga Sinnathamby, Daniel Hurtmans, Pierre-François Coheur, Marie Doutriaux-Boucher, Jacobus Onderwaater, Wolfgang Steinbrecht, Elyse A. Pennington, Kevin Bowman, and Cathy Clerbaux

Supplement

https://doi.org/10.5194/acp-25-11719-2025-supplement

Data sets

IASI Ozone (O3) Climate Data Record (CDR) Release 1 - Metop-A and -B AC SAF https://doi.org/10.15770/EUM_SAF_AC_0051

TROPESS CrIS-SNPP L2 Ozone for Reanalysis Stream TROPESS-CrIS https://doi.org/10.5067/8TS8WCSCZJMV

World Meteorological Organization-Global Atmosphere Watch Program (WMO-GAW) WMO/GAW Ozone Monitoring Community https://doi.org/10.14287/10000008

Daily IASI/Metop-A ULB-LATMOS ozone (O3) L2 product (vertical profile and columns -- EUMETSAT processing) C. Clerbaux and P.-F. Coheur https://doi.org/10.25326/806

Daily IASI/Metop-A ULB-LATMOS ozone (O3) L2 product (vertical profile and columns -- EUMETSAT processing) C. Clerbaux and P.-F. Coheur https://doi.org/10.25326/807

Daily IASI/Metop-A ULB-LATMOS ozone (O3) L2 product (vertical profile and columns -- EUMETSAT processing) C. Clerbaux and P.-F. Coheur https://doi.org/10.25326/805

Download

Article (25054 KB)
Full-text XML

Short summary

This study analyzes 16 years of global ozone data to assess its impact on air quality and climate. Using satellite measurements, we observed a global decrease in tropospheric ozone, particularly in tropical and European regions. The drop became more noticeable around 2020, partly due to reduced emissions during the pandemic. The study highlights the need for better data processing and integration to more accurately monitor ozone changes over time.