Articles | Volume 16, issue 8
Research article
21 Apr 2023
Research article |  | 21 Apr 2023

Near-real-time detection of unexpected atmospheric events using principal component analysis on the Infrared Atmospheric Sounding Interferometer (IASI) radiances

Adrien Vu Van, Anne Boynard, Pascal Prunet, Dominique Jolivet, Olivier Lezeaux, Patrice Henry, Claude Camy-Peyret, Lieven Clarisse, Bruno Franco, Pierre-François Coheur, and Cathy Clerbaux

Data sets

Daily IASI/Metop-B ULB-LATMOS sulphur dioxide (SO2) L2 product (columns and altitude) L. Clarisse

Standard daily IASI/Metop-B ULB-LATMOS ammonia (NH3) L2 product (total column) L. Clarisse, M. Van Damme, and P.-F. Coheur

Daily IASI/Metop-B ULB-LATMOS carbon monoxide (CO) L2 product (vertical profile and total column – EUMETSAT processing) C. Clerbaux, P.-F. Coheur, and D. Hurtmans

Short summary
With its near-real-time observations and good horizontal coverage, the Infrared Atmospheric Sounding Interferometer (IASI) instrument can contribute to the monitoring systems for a systematic and continuous detection of exceptional atmospheric events such as fires, anthropogenic pollution episodes, volcanic eruptions, or industrial releases. In this paper, a new approach is described for the detection and characterization of unexpected events in terms of trace gases using IASI radiance spectra.