Measurement report: Long-term measurements of surface ozone and trends in semi-natural sub-Saharan African ecosystems

Donnou, Hagninou Elagnon Venance; Akpo, Aristide Barthélémy; Ossohou, Money; Delon, Claire; Yoboué, Véronique; Laouali, Dungall; Ouafo-Leumbe, Marie; Van Zyl, Pieter Gideon; Ndiaye, Ousmane; Gardrat, Eric; Dias-Alves, Maria; Galy-Lacaux, Corinne

doi:https://doi.org/10.5194/acp-24-13151-2024

Articles | Volume 24, issue 23

https://doi.org/10.5194/acp-24-13151-2024

© 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-24-13151-2024

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

Articles | Volume 24, issue 23

Measurement report

|

29 Nov 2024

Measurement report |

| 29 Nov 2024

Measurement report: Long-term measurements of surface ozone and trends in semi-natural sub-Saharan African ecosystems

Hagninou Elagnon Venance Donnou, Aristide Barthélémy Akpo, Money Ossohou, Claire Delon, Véronique Yoboué, Dungall Laouali, Marie Ouafo-Leumbe, Pieter Gideon Van Zyl, Ousmane Ndiaye, Eric Gardrat, Maria Dias-Alves, and Corinne Galy-Lacaux

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Month	HTML	PDF	XML	Total
Apr 2024	124	40	10	174
May 2024	101	30	13	144
Jun 2024	91	15	10	116
Jul 2024	35	10	7	52
Aug 2024	32	9	5	46
Sep 2024	35	11	3	49
Oct 2024	20	6	3	29
Nov 2024	14	7	1	22

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Short summary

Ozone is a secondary air pollutant that is detrimental to human and plant health. A better understanding of its chemical evolution is a challenge for Africa, where it is still undersampled. Out of 14 sites examined (1995–2020), high levels of O₃ are reported in southern Africa. The dominant chemical processes leading to O₃ formation are identified. A decrease in O₃ is observed at Katibougou (Mali) and Banizoumbou (Niger), and an increase is found at Zoétélé (Cameroon) and Skukuza (South Africa).


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