Articles | Volume 11, issue 7
https://doi.org/10.5194/amt-11-4493-2018
https://doi.org/10.5194/amt-11-4493-2018
Research article
 | 
27 Jul 2018
Research article |  | 27 Jul 2018

Characterization and correction of stray light in TROPOMI-SWIR

Paul J. J. Tol, Tim A. van Kempen, Richard M. van Hees, Matthijs Krijger, Sidney Cadot, Ralph Snel, Stefan T. Persijn, Ilse Aben, and Ruud W. M. Hoogeveen

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Short summary
The shortwave infrared (SWIR) spectrometer module of the Tropospheric Monitoring Instrument (TROPOMI) is used to measure atmospheric CO and methane columns from space. A method has been developed and applied in an on-ground calibration campaign to characterize stray light in detail. An algorithm was then devised to correct in-flight observations in near-real time, reducing the stray-light signal sufficiently for accurate gas-column retrievals.