Articles | Volume 23, issue 21
Research article
10 Nov 2023
Research article |  | 10 Nov 2023

Tropical tropospheric ozone and carbon monoxide distributions: characteristics, origins, and control factors, as seen by IAGOS and IASI

Maria Tsivlidou, Bastien Sauvage, Yasmine Bennouna, Romain Blot, Damien Boulanger, Hannah Clark, Eric Le Flochmoën, Philippe Nédélec, Valérie Thouret, Pawel Wolff, and Brice Barret

Data sets

Source attribution using FLEXPART and carbon monoxide emission inventories: SOFT-IO version 1.0 B. Sauvage, A. Auby, and A. Fontaine

IAGOS ancillary data (L4) - CO contributions to the aircraft measurements B. Sauvage, P. Nédélec, and D. Boulanger

IAGOS Data Portal D. Boulanger, V. Thouret, and A. Petzold

Short summary
The tropics are a region where the ozone increase has been most apparent since 1980 and where observations are sparse. Using aircraft, satellite, and model data, we document the characteristics of tropospheric ozone and CO over the whole tropics for the last 2 decades. We explore the origin of the observed CO anomalies and investigate transport processes driving the tropical CO and O3 distribution. Our study highlights the importance of anthropogenic emissions, mostly over the northern tropics.
Final-revised paper