Articles | Volume 14, issue 8
Atmos. Meas. Tech., 14, 5459–5472, 2021
https://doi.org/10.5194/amt-14-5459-2021
Atmos. Meas. Tech., 14, 5459–5472, 2021
https://doi.org/10.5194/amt-14-5459-2021
Research article
10 Aug 2021
Research article | 10 Aug 2021

Slit homogenizer introduced performance gain analysis based on the Sentinel-5/UVNS spectrometer

Timon Hummel et al.

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Latest update: 08 Aug 2022
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Short summary
The impact of heterogeneous scene radiance affects the quality of trace gas retrieval products of Earth observation imaging spectrometers. This effect can be mitigated by introducing on-board hardware solutions called slit homogenizers, which scramble the light entering the instrument and thereby make it insensitive to Earth scene contrast. Here we present a comprehensive modeling of the slit homogenizer present in the Sentinel-5/UVNS instrument and quantify the spectral performance.