Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 18, issue 21
Articles | Volume 18, issue 21
https://doi.org/10.5194/amt-18-6513-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-18-6513-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 21
Research article
 | Highlight paper
 | 
13 Nov 2025
Research article | Highlight paper |  | 13 Nov 2025

IASI global radiometric uncertainty budget

Dimitrios Kilymis, Yannick Kangah, Laura Le Barbier, Elsa Jacquette, Xavier Lenot, Jérémie Ansart, Mathilde Faillot, Jean-Christophe Calvel, Gilles Codou, and Olivier Vandermarcq

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Independent validation of IASI/MetOp-A LMD and RAL CH4 products using CAMS model, in situ profiles, and ground-based FTIR measurements
Bart Dils, Minqiang Zhou, Claude Camy-Peyret, Martine De Mazière, Yannick Kangah, Bavo Langerock, Pascal Prunet, Carmine Serio, Richard Siddans, and Brian Kerridge
Atmos. Meas. Tech., 17, 5491–5524, https://doi.org/10.5194/amt-17-5491-2024,https://doi.org/10.5194/amt-17-5491-2024, 2024
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Cited articles

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Blumstein, D., Chalon, G., Carlier, T., Buil, C., Hebert, P., Maciaszek, T., Ponce, G., Phulpin, T., Tournier, B., Simeoni, D., Astruc, P., Clauss, A., Kayal, G., and Jegou, R.: IASI instrument: Technical overview and measured performances, Infrared Spaceborne Remote Sensing XII, 5543, 196–207, https://doi.org/10.1117/12.560907, 2004. a, b
Blumstein, D., Tournier, B., Cayla, F., Phulpin, T., Fjørtoft, R., Buil, C., and Ponce, G.: In-flight performance of the of the Infrared Atmospheric Sounding Interferometer (IASI) on MetOp-A, Proceedings of SPIE – The International Society for Optical Engineering, 6684, https://doi.org/10.1117/12.734162, 2007. a, b
Bouillon, M., Safieddine, S., Whitburn, S., Clarisse, L., Aires, F., Pellet, V., Lezeaux, O., Scott, N. A., Doutriaux-Boucher, M., and Clerbaux, C.: Time evolution of temperature profiles retrieved from 13 years of infrared atmospheric sounding interferometer (IASI) data using an artificial neural network, Atmos. Meas. Tech., 15, 1779–1793, https://doi.org/10.5194/amt-15-1779-2022, 2022. a
Chalinel, R., Attié, J.-L., Ricaud, P., Vidot, J., Kangah, Y., Hauglustaine, D., and Thompson, R.: Evaluation and Global-Scale Observation of Nitrous Oxide from IASI on Metop-A, Remote Sensing, 14, https://doi.org/10.3390/rs14061403, 2022. a
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This study presents a comprehensive and quantitative evaluation of the global radiometric uncertainty budget for the IASI satellite instruments, which are key components of long-term atmospheric monitoring. The work represents a timely and significant advance in ensuring the traceability and stability of satellite-based climate observations.
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Short summary
This study establishes the global radiometric uncertainty budget of the Infrared Atmospheric Sounder Interferometer (IASI) instruments onboard Eumetsat first generation MetOp satellites. Major contributions to the budget arise from the correction of the analog non-linearity, the black body characterization, the scan mirror reflectivity and the background radiance instability. The estimated uncertainty remains relatively stable throughout the lifetime of the instruments.
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