Tropical tropospheric ozone distribution and trends from in situ and satellite data

Gaudel, Audrey; Bourgeois, Ilann; Li, Meng; Chang, Kai-Lan; Ziemke, Jerald; Sauvage, Bastien; Stauffer, Ryan M.; Thompson, Anne M.; Kollonige, Debra E.; Smith, Nadia; Hubert, Daan; Keppens, Arno; Cuesta, Juan; Heue, Klaus-Peter; Veefkind, Pepijn; Aikin, Kenneth; Peischl, Jeff; Thompson, Chelsea R.; Ryerson, Thomas B.; Frost, Gregory J.; McDonald, Brian C.; Cooper, Owen R.

doi:https://doi.org/10.5194/acp-24-9975-2024

Articles | Volume 24, issue 17

https://doi.org/10.5194/acp-24-9975-2024

© Author(s) 2024. 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/acp-24-9975-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 17

Research article

|

09 Sep 2024

Research article |

| 09 Sep 2024

Tropical tropospheric ozone distribution and trends from in situ and satellite data

Audrey Gaudel, Ilann Bourgeois, Meng Li, Kai-Lan Chang, Jerald Ziemke, Bastien Sauvage, Ryan M. Stauffer, Anne M. Thompson, Debra E. Kollonige, Nadia Smith, Daan Hubert, Arno Keppens, Juan Cuesta, Klaus-Peter Heue, Pepijn Veefkind, Kenneth Aikin, Jeff Peischl, Chelsea R. Thompson, Thomas B. Ryerson, Gregory J. Frost, Brian C. McDonald, and Owen R. Cooper

Supplement

https://doi.org/10.5194/acp-24-9975-2024-supplement

Data sets

Freie Universitat Berlin QBO data Freie Universitat Berlin https://www.geo.fu-berlin.de/met/ag/strat/produkte/qbo/qbo.dat

NOAA CSL fused datasets and trends NOAA CSL/Chang K.-l. https://csl.noaa.gov/groups/csl4/modeldata/

NOAA PSL El Nino Southern Oscillation data NOAA PSL https://psl.noaa.gov/enso/mei/

IAGOS ozone profiles data AERIS/IAGOS https://iagos.aeris-data.fr/

SHADOZ ozone profiles SHADOZ https://tropo.gsfc.nasa.gov/shadoz/

IASI + GOME2 satellite data AERIS/IASI https://iasi.aeris-data.fr/o3_iago2/

OMI CCD, OMI/MLS and OMPS/MERRA-2 data NASA https://acd-ext.gsfc.nasa.gov/Data_services/cloud_slice/

TROPOMI CCD data NASA https://disc.gsfc.nasa.gov/datasets?keywords=tropomi&page=1

CrIS satellite data NASA https://disc.gsfc.nasa.gov/

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Short summary

The study examines tropical tropospheric ozone changes. In situ data from 1994–2019 display increased ozone, notably over India, Southeast Asia, and Malaysia and Indonesia. Sparse in situ data limit trend detection for the 15-year period. In situ and satellite data, with limited sampling, struggle to consistently detect trends. Continuous observations are vital over the tropical Pacific Ocean, Indian Ocean, western Africa, and South Asia for accurate ozone trend estimation in these regions.