Validation of 12 years (2008–2019) of IASI-A CO with IAGOS aircraft observations

Barret, Brice; Loicq, Pierre; Le Flochmoën, Eric; Bennouna, Yasmine; Hadji-Lazaro, Juliette; Hurtmans, Daniel; Sauvage, Bastien

doi:https://doi.org/10.5194/amt-18-129-2025

Articles | Volume 18, issue 1

https://doi.org/10.5194/amt-18-129-2025

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

https://doi.org/10.5194/amt-18-129-2025

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

Articles | Volume 18, issue 1

Research article

|

10 Jan 2025

Research article |

| 10 Jan 2025

Validation of 12 years (2008–2019) of IASI-A CO with IAGOS aircraft observations

Brice Barret, Pierre Loicq, Eric Le Flochmoën, Yasmine Bennouna, Juliette Hadji-Lazaro, Daniel Hurtmans, and Bastien Sauvage

Data sets

IASI/METOPA ULB-LATMOS carbon monoxide (CO) L2 products (profiles of partial columns and total columns) ULB-LATMOS https://navigator.eumetsat.int/product/EO:EUM:DAT:METOP:IASIL2COX

Short summary

Profiles of carbon monoxide (CO) retrieved from the Infrared Atmospheric Sounding Interferometer (IASI) with the SOftware for a Fast Retrieval of IASI Data (SOFRID) and Fast Optimal Retrievals on Layers for IASI (FORLI) are validated with 8500 observations at 33 airports from the In-service Aircraft for a Global Observing System (IAGOS) for 2008–2019. IASI retrievals underestimate CO, with stronger bias in the middle to upper troposphere for SOFRID and in the lower troposphere for FORLI.